阅读说明：本技术 改性橡胶沥青的施工方法 (Construction method of modified rubber asphalt ) 是由 王珏 李鸿儒 刘利军 赵敬勇 李敏 于 2020-06-16 设计创作，主要内容包括：本发明公开了改性橡胶沥青的施工方法,包括,基层处理；粘结层施工：向基层表面撒布乳化沥青,铺设第一加胶玻璃纤维网格布并预留；下面层施工：根据车道数量,分次摊铺改性橡胶沥青混合料,摊铺宽度为车道宽度,摊铺后,立即压实,相邻车道间均设有一第二加胶玻璃纤维网格布；上面层施工：将基层两侧预留的第一加胶玻璃纤维网格布固定在相邻压实车道的表面,在车道间铺设第三加胶玻璃纤维网格布,并与第二加胶玻璃纤维网格布和两相邻压实车道的表面固定,再按照常规沥青路面的铺设工序铺设改性橡胶沥青混合料。本发明的施工方法主要应用于低橡胶粉掺量的改性橡胶沥青施工,沥青的摊铺和压实可参照常规沥青路面的铺设工序进行,施工难度低。(The invention discloses a construction method of modified rubber asphalt, which comprises the following steps of treating a base layer; construction of a bonding layer: spreading emulsified asphalt on the surface of the base layer, laying first glued glass fiber mesh cloth and reserving; the following layers are constructed: paving the modified rubber asphalt mixture according to the number of lanes, wherein the paving width is the lane width, compacting the mixture immediately after paving, and arranging a second rubberized glass fiber mesh cloth between every two adjacent lanes; constructing an upper layer: fixing the first rubberized glass fiber mesh cloth reserved on two sides of the base layer on the surfaces of the adjacent compaction lanes, laying the third rubberized glass fiber mesh cloth between the lanes, fixing the third rubberized glass fiber mesh cloth with the second rubberized glass fiber mesh cloth and the surfaces of the two adjacent compaction lanes, and laying the modified rubber asphalt mixture according to the laying procedure of the conventional asphalt pavement. The construction method is mainly applied to the construction of the modified rubber asphalt with low rubber powder mixing amount, the paving and compaction of the asphalt can be carried out according to the paving procedure of the conventional asphalt pavement, and the construction difficulty is low.)

1. The construction method of the modified rubber asphalt is characterized by comprising the following steps of,

step one, base layer treatment: removing and cleaning sundries on the surface of the base layer, and then carrying out dust collection, water cleaning and dust collection on the surface of the base layer;

step two, bonding layer construction: spreading emulsified asphalt on the surface of a base layer, transversely paving first rubberized glass fiber gridding cloth on the surface of the emulsified asphalt, stretching and fixing the first rubberized glass fiber gridding cloth on two sides of the base layer, and reserving the first rubberized glass fiber gridding cloth on the two sides of the base layer respectively;

step three, constructing the following layers: paving the modified rubber asphalt mixture according to the number of lanes, wherein the paving width is the lane width, immediately compacting after paving, then paving a second rubberized glass fiber mesh cloth on one side and/or two sides of the compacted lane along the length direction of the lane, fixing the lower end of the second rubberized glass fiber mesh cloth with the first rubberized glass fiber mesh cloth, and fixing the upper end of the second rubberized glass fiber mesh cloth to the compacted lane, and then paving lanes adjacent to the compacted lane, repeating the process until the paving and compacting of all lanes are finished, and arranging a second rubberized glass fiber mesh cloth between the adjacent lanes;

step four, constructing the upper surface layer: the method comprises the steps of turning over first rubberized glass fiber mesh cloth reserved on two sides of a base layer, stretching and fixing the first rubberized glass fiber mesh cloth on the surfaces of adjacent compaction lanes, additionally arranging third rubberized glass fiber mesh cloth between the lanes along the length direction, fixing the middle of the third rubberized glass fiber mesh cloth and the upper end of the second rubberized glass fiber mesh cloth, fixing the two sides of the third rubberized glass fiber mesh cloth and the surfaces of the two adjacent compaction lanes respectively, and then paving a modified rubber asphalt mixture according to the paving procedure of the conventional asphalt pavement.

2. The method of claim 1, wherein the first rubberized fiberglass mesh and the second rubberized fiberglass mesh are bonded togetherThe preparation method of the glass fiber mesh cloth is the same as that of the third glue-added glass fiber mesh cloth, specifically, glue solution is uniformly sprayed on the two side surfaces of the glass fiber mesh cloth, the spraying temperature is 160 ℃, and the spraying amount is 0.2-0.4L/m²And after spraying, naturally cooling and solidifying to obtain the glue solution, wherein the preparation method of the glue solution comprises the steps of heating 3 parts by weight of matrix asphalt to 180 ℃, adding 8-9 parts by weight of tire rubber powder, and stirring and shearing for 60min at the temperature of 180 ℃ of 160-.

3. The construction method of the modified rubber asphalt as claimed in claim 1, wherein the reserved width of the first rubberized glass fiber mesh fabric on the single side of the base layer is as follows: w₁(M-1.6)/2+ H, width of second sized fiberglass scrim: w₂H +0.4, width of third glued fiberglass scrim: w₃M-1.6, where M is the lane width in M and H is the underlying layer thickness in M.

4. The process of claim 1, wherein the second step further comprises spreading crushed stone on the surface of the emulsified asphalt and compacting the crushed stone immediately after spreading the emulsified asphalt on the surface of the base layer, wherein the amount of the emulsified asphalt is 0.85 to 0.95L/m²The particle size of the crushed stone is 5-10mm, and the spreading amount is 4m³/km²。

5. The method of claim 1, wherein the modified rubber asphalt mixture is prepared by referring to an ARAC-13 discontinuous graded rubber asphalt mixture, wherein the amount of the tire rubber powder in the modified rubber asphalt is 9% of the mass of the base asphalt.

6. The method of claim 1, wherein the first rubberized fiberglass mesh fabric, the second rubberized fiberglass mesh fabric, and the third rubberized fiberglass mesh fabric are fixed to the surface of the base layer, the first rubberized fiberglass mesh fabric, the second rubberized fiberglass mesh fabric, or the compacting lane using a fixed cart, the fixed cart comprising,

the bottom plate is horizontally arranged, and a handle is arranged on the top surface of the rear end of the bottom plate;

the pressing wheel is a solid wheel, is arranged at the front end of the bottom plate and is arranged along the width direction of the bottom plate, two ends of the pressing wheel are fixedly connected with the bottom surface of the bottom plate through a first fixing support which is vertically arranged, and the pressing wheel is rotationally connected with the first fixing support;

the cooling wheel is a hollow wheel and is arranged at the rear end of the bottom plate and arranged along the width direction of the bottom plate, the cooling wheel comprises a hollow cooling wheel shaft and a cooling wheel sleeve sleeved outside the hollow cooling wheel shaft, the cooling wheel sleeve is rotatably connected with the hollow cooling wheel shaft, two ends of the hollow cooling wheel shaft are respectively and fixedly connected with the bottom surface of the bottom plate through a second fixing support which is vertically arranged, the hollow cooling wheel shaft is fixedly connected with the second fixing support, one end of the hollow cooling wheel shaft is provided with a first air inlet pipe, the second fixing support is provided with a through hole for the first air inlet pipe to penetrate through, a first channel is formed between the cooling wheel sleeve and the hollow cooling wheel shaft, one end of the first channel, which is far away from the first air inlet pipe, is provided with a plurality of first annular sheets and a plurality of second annular sheets in a staggered manner, and the outer wall of any first annular sheet is fixedly connected with the cooling wheel sleeve, the inner wall of any second annular sheet is fixedly connected with the hollow cooling wheel shaft, the outer wall of the second annular sheet is not contacted with the cooling wheel sleeve, a second channel with a serpentine structure is formed between the first annular sheets and the second annular sheets, a plurality of first air outlet holes communicated with the first channel are formed in the side wall of the hollow cooling wheel shaft at intervals, and a plurality of second air outlet holes communicated with the second channel are formed in the end face, close to the second channel, of the cooling wheel sleeve at intervals;

the air cooler is arranged at the rear end of the bottom plate and fixedly connected with the top surface of the bottom plate, and an air outlet of the air cooler is communicated with the first air inlet pipe through a first air outlet pipe;

the heating spray pipe is arranged in front of the pinch roller and arranged along the width direction of the bottom plate, the heating spray pipe is fixedly connected with the bottom surface of the bottom plate through a third fixing support which is vertically arranged, two ends of the heating spray pipe are closed, a second air inlet pipe is arranged on the upper side wall, a plurality of nozzles are arranged on the lower side wall at intervals along the length direction of the lower side wall, and any nozzle is higher than the bottom of the pinch roller;

and the high-pressure air heater is arranged at the front end of the bottom plate and is fixedly connected with the top surface of the bottom plate, and an air outlet of the high-pressure air heater is communicated with the second air inlet pipe through a second air outlet pipe.

7. The process for constructing modified rubber asphalt as claimed in claim 6, wherein the length of the heating spray pipe, the pinch roller and the cooling roller is 30-40cm, the diameters of the pinch roller and the cooling roller are equal, and the distance between the pinch roller and the cooling roller is not less than 50 cm.

Technical Field

The invention relates to the field of asphalt construction. More specifically, the invention relates to a construction method of modified rubber asphalt.

Background

The modified rubber asphalt is a new high-quality composite material made up by using rubber powder made up by using waste tyre as modifying agent, adding it into matrix asphalt and making it pass through a series of actions of high-temp., additive and shearing-mixing in a special equipment. The modified rubber asphalt has the advantages of prolonging the service life of the pavement, reducing noise, lightening vibration, improving thermal stability and thermal cracking resistance, improving anti-icing property and the like. The rubber powder in the existing modified rubber asphalt has high mixing amount which is more than 20 percent of the mass of the matrix asphalt, the viscosity of the asphalt is very high, the adhesion is easy in the construction process, and the construction difficulty is high.

Disclosure of Invention

The invention aims to provide a construction method of modified rubber asphalt, which is mainly applied to the construction of modified rubber asphalt with low rubber powder mixing amount.

In order to achieve the object according to the present invention, there is provided a method for constructing a modified rubber asphalt, comprising,

step one, base layer treatment: removing and cleaning sundries on the surface of the base layer, and then carrying out dust collection, water cleaning and dust collection on the surface of the base layer;

step two, bonding layer construction: spreading emulsified asphalt on the surface of a base layer, transversely paving first rubberized glass fiber gridding cloth on the surface of the emulsified asphalt, stretching and fixing the first rubberized glass fiber gridding cloth on two sides of the base layer, and reserving the first rubberized glass fiber gridding cloth on the two sides of the base layer respectively;

step three, constructing the following layers: paving the modified rubber asphalt mixture according to the number of lanes, wherein the paving width is the lane width, immediately compacting after paving, then paving a second rubberized glass fiber mesh cloth on one side and/or two sides of the compacted lane along the length direction of the lane, fixing the lower end of the second rubberized glass fiber mesh cloth with the first rubberized glass fiber mesh cloth, and fixing the upper end of the second rubberized glass fiber mesh cloth to the compacted lane, and then paving lanes adjacent to the compacted lane, repeating the process until the paving and compacting of all lanes are finished, and arranging a second rubberized glass fiber mesh cloth between the adjacent lanes;

step four, constructing the upper surface layer: the method comprises the steps of turning over first rubberized glass fiber mesh cloth reserved on two sides of a base layer, stretching and fixing the first rubberized glass fiber mesh cloth on the surfaces of adjacent compaction lanes, additionally arranging third rubberized glass fiber mesh cloth between the lanes along the length direction, fixing the middle of the third rubberized glass fiber mesh cloth and the upper end of the second rubberized glass fiber mesh cloth, fixing the two sides of the third rubberized glass fiber mesh cloth and the surfaces of the two adjacent compaction lanes respectively, and then paving a modified rubber asphalt mixture according to the paving procedure of the conventional asphalt pavement.

Preferably, the construction method of the modified rubber asphalt comprises the same preparation method of the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth and the third rubberized glass fiber mesh cloth, specifically, glue is uniformly sprayed on two side surfaces of the glass fiber mesh cloth, the spraying temperature is 160 ℃, and the spraying amount is 0.2-0.4L/m²And after spraying, naturally cooling and solidifying to obtain the glue solution, wherein the preparation method of the glue solution comprises the steps of heating 3 parts by weight of matrix asphalt to 180 ℃, adding 8-9 parts by weight of tire rubber powder, and stirring and shearing for 60min at the temperature of 180 ℃ of 160-.

Preferably, in the construction method of the modified rubber asphalt, the reserved width of the first rubberized glass fiber mesh cloth on the single side of the base layer is as follows: w₁(M-1.6)/2+ H, width of second sized fiberglass scrim: w₂H +0.4, width of third glued fiberglass scrim: w₃M-1.6, where M is the lane width in M and H is the underlying layer thickness in M.

Preferably, the method for applying the modified rubber asphalt further comprises, in the second step, spreading emulsified asphalt on the surface of the base layerImmediately spreading crushed stone on the surface of emulsified asphalt and compacting, wherein the spreading amount of the emulsified asphalt is 0.85-0.95L/m²The particle size of the crushed stone is 5-10mm, and the spreading amount is 4m³/km²。

Preferably, in the construction method of the modified rubber asphalt, the modified rubber asphalt mixture is prepared by referring to an ARAC-13 discontinuous graded rubber asphalt mixture, wherein the mixing amount of the tire rubber powder in the modified rubber asphalt is 9% of the mass of the matrix asphalt.

Preferably, the construction method of the modified rubber asphalt comprises the steps of fixing a first rubberized glass fiber mesh cloth, a second rubberized glass fiber mesh cloth and a third rubberized glass fiber mesh cloth on the surface of a base layer, the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth or a compaction lane by using a fixed trolley, wherein the fixed trolley comprises,

the bottom plate is horizontally arranged, and a handle is arranged on the top surface of the rear end of the bottom plate;

the pressing wheel is a solid wheel, is arranged at the front end of the bottom plate and is arranged along the width direction of the bottom plate, two ends of the pressing wheel are fixedly connected with the bottom surface of the bottom plate through a first fixing support which is vertically arranged, and the pressing wheel is rotationally connected with the first fixing support;

the cooling wheel is a hollow wheel and is arranged at the rear end of the bottom plate and arranged along the width direction of the bottom plate, the cooling wheel comprises a hollow cooling wheel shaft and a cooling wheel sleeve sleeved outside the hollow cooling wheel shaft, the cooling wheel sleeve is rotatably connected with the hollow cooling wheel shaft, two ends of the hollow cooling wheel shaft are respectively and fixedly connected with the bottom surface of the bottom plate through a second fixing support which is vertically arranged, the hollow cooling wheel shaft is fixedly connected with the second fixing support, one end of the hollow cooling wheel shaft is provided with a first air inlet pipe, the second fixing support is provided with a through hole for the first air inlet pipe to penetrate through, a first channel is formed between the cooling wheel sleeve and the hollow cooling wheel shaft, one end of the first channel, which is far away from the first air inlet pipe, is provided with a plurality of first annular sheets and a plurality of second annular sheets in a staggered manner, and the outer wall of any first annular sheet is fixedly connected with the cooling wheel sleeve, the inner wall of any second annular sheet is fixedly connected with the hollow cooling wheel shaft, the outer wall of the second annular sheet is not contacted with the cooling wheel sleeve, a second channel with a serpentine structure is formed between the first annular sheets and the second annular sheets, a plurality of first air outlet holes communicated with the first channel are formed in the side wall of the hollow cooling wheel shaft at intervals, and a plurality of second air outlet holes communicated with the second channel are formed in the end face, close to the second channel, of the cooling wheel sleeve at intervals;

the air cooler is arranged at the rear end of the bottom plate and fixedly connected with the top surface of the bottom plate, and an air outlet of the air cooler is communicated with the first air inlet pipe through a first air outlet pipe;

the heating spray pipe is arranged in front of the pinch roller and arranged along the width direction of the bottom plate, the heating spray pipe is fixedly connected with the bottom surface of the bottom plate through a third fixing support which is vertically arranged, two ends of the heating spray pipe are closed, a second air inlet pipe is arranged on the upper side wall, a plurality of nozzles are arranged on the lower side wall at intervals along the length direction of the lower side wall, and any nozzle is higher than the bottom of the pinch roller;

and the high-pressure air heater is arranged at the front end of the bottom plate and is fixedly connected with the top surface of the bottom plate, and an air outlet of the high-pressure air heater is communicated with the second air inlet pipe through a second air outlet pipe.

Preferably, in the construction method of the modified rubber asphalt, the lengths of the heating spray pipe, the pressing wheel and the cooling wheel are 30-40cm, the diameters of the pressing wheel and the cooling wheel are equal, and the distance between the pressing wheel and the cooling wheel is not less than 50 cm.

The invention at least comprises the following beneficial effects:

firstly, the invention is mainly applied to the construction of the modified rubber asphalt with low rubber powder mixing amount, and the first rubberized glass fiber gridding cloth is additionally arranged between the bonding layer and the lower layer, a second rubberized glass fiber mesh cloth is additionally arranged between the adjacent lanes of the lower surface layer, a third rubberized glass fiber mesh cloth is additionally arranged between the lower surface layer and the upper surface layer, in the process of paving the modified rubber asphalt mixture, the glue in the glue-added glass fiber mesh cloth is re-melted at high temperature and is fused with the modified rubber asphalt mixture, so that the modified rubber asphalt mixture, the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth and the third rubberized glass fiber mesh cloth are bonded with each other to form a whole, the bonding force among the bonding layer, the lower surface layer and the upper surface layer is enhanced, so that the excellent performance of the existing modified rubber asphalt pavement can be maintained while the mixing amount of the rubber powder in the existing modified rubber asphalt is reduced; the construction method of the modified rubber asphalt can pave and compact by referring to the paving procedure of the conventional asphalt pavement, and has low construction difficulty.

Secondly, before the first rubberized glass fiber mesh cloth is laid, the broken stone is spread on the surface of the emulsified asphalt, so that the first rubberized glass fiber mesh cloth can be embedded into the broken stone in the lower surface layer construction process, on one hand, the embedded bonding force is stronger compared with the plane bonding of the emulsified asphalt and the modified asphalt mixture, and on the other hand, the broken stone also has a certain stress absorption effect, and the anti-rutting performance of the pavement can be further enhanced.

Thirdly, the gluing glass fiber gridding cloth to be bonded is fixed by the fixing trolley by utilizing the self characteristic of the gluing glass fiber gridding cloth, no additional fixing material is needed, the fixing method is simple, and the operation is convenient.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic side view of a stationary cart according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a cooling wheel according to an embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.

In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In one technical scheme, the invention provides a construction method of modified rubber asphalt, which comprises the following steps,

step one, base layer treatment: removing and cleaning sundries on the surface of the base layer, and then carrying out dust collection, water cleaning and dust collection on the surface of the base layer;

step two, bonding layer construction: spreading emulsified asphalt on the surface of a base layer, transversely paving first rubberized glass fiber gridding cloth on the surface of the emulsified asphalt, stretching and fixing the first rubberized glass fiber gridding cloth on two sides of the base layer, and reserving the first rubberized glass fiber gridding cloth on the two sides of the base layer respectively;

step three, constructing the following layers: paving the modified rubber asphalt mixture according to the number of lanes, wherein the paving width is the lane width, immediately compacting after paving, then paving a second rubberized glass fiber mesh cloth on one side and/or two sides of the compacted lane along the length direction of the lane, fixing the lower end of the second rubberized glass fiber mesh cloth with the first rubberized glass fiber mesh cloth, and fixing the upper end of the second rubberized glass fiber mesh cloth to the compacted lane, and then paving lanes adjacent to the compacted lane, repeating the process until the paving and compacting of all lanes are finished, and arranging a second rubberized glass fiber mesh cloth between the adjacent lanes;

step four, constructing the upper surface layer: the method comprises the steps of turning over first rubberized glass fiber mesh cloth reserved on two sides of a base layer, stretching and fixing the first rubberized glass fiber mesh cloth on the surfaces of adjacent compaction lanes, additionally arranging third rubberized glass fiber mesh cloth between the lanes along the length direction, fixing the middle of the third rubberized glass fiber mesh cloth and the upper end of the second rubberized glass fiber mesh cloth, fixing the two sides of the third rubberized glass fiber mesh cloth and the surfaces of the two adjacent compaction lanes respectively, and then paving a modified rubber asphalt mixture according to the paving procedure of the conventional asphalt pavement.

In the technical scheme, the modified rubber asphalt used in the modified rubber asphalt mixture is modified rubber asphalt with low rubber powder mixing amount, and the construction method of the modified rubber asphalt mainly comprises the following four steps: removing and cleaning sundries on the surface of a base layer, then carrying out dust absorption, water cleaning and dust absorption on the surface of the base layer, so that the surface of the base layer is dry and free of impurities and dust, and the quality of the base layer is required to be detected before the base layer is cleaned; secondly, immediately spreading emulsified asphalt on the surface of the base layer after dedusting the surface of the base layer, transversely paving first rubberized glass fiber gridding cloth on the surface of the emulsified asphalt, stretching and fixing the first rubberized glass fiber gridding cloth on two sides of the base layer, and reserving the first rubberized glass fiber gridding cloth on two sides of the base layer respectively to preliminarily fix the first rubberized glass fiber gridding cloth on the surface of the emulsified asphalt; thirdly, paving the modified rubber asphalt mixture according to the number of lanes after the emulsified asphalt is dried, wherein the paving width is the lane width, for example, if the number of lanes is 4, paving is carried out for 4 times, paving is carried out according to the sequence of a first lane (close to a curb), a second lane, a third lane and a fourth lane, immediately compacting is carried out after paving, a second rubberized glass fiber gridding cloth is paved on one side of a compacting lane close to a lane to be paved along the length direction of the lanes, the lower end of the second rubberized glass fiber gridding cloth is fixed with the first rubberized glass fiber gridding cloth, the upper end of the second rubberized glass fiber gridding cloth protrudes out of the compacting lane and is fixed with the surface of the compacting lane, and then paving lanes adjacent to the compacting lane, of course, in order to improve the paving efficiency, a plurality of pavers can be adopted to synchronously pave the separated lanes, for example, two paves are adopted to synchronously pave the first lane and the third lane respectively, after paving, immediately compacting, paving second glued glass fiber mesh cloth on one side of the first lane close to the second lane and on two sides of the third lane along the length direction of the lanes after compacting, fixing the lower end of the second glued glass fiber mesh cloth with the first glued glass fiber mesh cloth, enabling the upper end of the second glued glass fiber mesh cloth to protrude out of the compacted lane and be fixed with the surface of the compacted lane, then paving the second lane and the fourth lane, repeating the process until paving and compacting of all the lanes are completed, and enabling a second glued glass fiber mesh cloth to be arranged between every two adjacent lanes, wherein the concrete paving and compacting method is the same as that of a conventional asphalt pavement paving method, and is not repeated; and fourthly, after the first rubberized glass fiber mesh cloth reserved on two sides of the base layer is turned over, the first rubberized glass fiber mesh cloth is stretched and fixed on the surface of an adjacent compaction lane, a third rubberized glass fiber mesh cloth is additionally arranged between the lanes along the length direction, the middle of the third rubberized glass fiber mesh cloth is fixed with the upper end of the second rubberized glass fiber mesh cloth, the two sides of the third rubberized glass fiber mesh cloth are respectively fixed with the surfaces of the two adjacent compaction lanes, the first rubberized glass fiber mesh cloth and the third rubberized glass fiber mesh cloth cover the two sides of the lanes, and then the upper modified rubber asphalt mixture is laid according to the laying procedure of the conventional asphalt pavement.

The invention is mainly applied to the construction of the modified rubber asphalt with low rubber powder mixing amount, and the first rubber-added glass fiber gridding cloth is additionally arranged between the bonding layer and the lower layer, a second rubberized glass fiber mesh cloth is additionally arranged between the adjacent lanes of the lower surface layer, a third rubberized glass fiber mesh cloth is additionally arranged between the lower surface layer and the upper surface layer, in the process of paving the modified rubber asphalt mixture, the glue in the glue-added glass fiber mesh cloth is re-melted at high temperature and is fused with the modified rubber asphalt mixture, so that the modified rubber asphalt mixture, the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth and the third rubberized glass fiber mesh cloth are bonded with each other to form a whole, the bonding force among the bonding layer, the lower surface layer and the upper surface layer is enhanced, so that the excellent performance of the existing modified rubber asphalt pavement can be maintained while the mixing amount of the rubber powder in the existing modified rubber asphalt is reduced; the construction method of the modified rubber asphalt can pave and compact by referring to the paving procedure of the conventional asphalt pavement, and has low construction difficulty.

In another technical scheme, the construction method of the modified rubber asphalt comprises the same preparation method of the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth and the third rubberized glass fiber mesh cloth, specifically, glue solution is uniformly sprayed on two side surfaces of the glass fiber mesh cloth, the spraying temperature is 160 ℃, and the spraying amount is 0.2-0.4L/m²And after spraying, naturally cooling and solidifying to obtain the glue solution, wherein the preparation method of the glue solution comprises the steps of heating 3 parts by weight of matrix asphalt to 180 ℃, adding 8-9 parts by weight of tire rubber powder, and stirring and shearing for 60min at the temperature of 180 ℃ of 160-. Here, there is exemplified a preferable preparation method of the rubberized glass fiber mesh fabric, which is prepared by uniformly spraying a glue solution to both side surfaces of a glass fiber mesh fabric, and naturally cooling and solidifying the sprayed glue solution, wherein the spraying amount of the glue solution is preferably 0.2-0.4L/m²The spraying amount of the glue solution is less than 0.2L/m²When the adhesive force between the adhesive solution and the modified rubber asphalt is insufficient, the spraying amount of the adhesive solution is higher than 0.4L/m²The glue solution is long in curing time, the formed glue film is uneven in thickness, and the prepared glue-added glass fiber mesh fabric is poor in flexibility and not easy to bend; when the glue solution is prepared, the 70# road petroleum asphalt is preferably adopted as the matrix asphalt, and a certain amount of matrix asphalt is added into the tire rubber powder, so that the curing speed of the glue solution is improved, and the fusion of the glue solution and the modified rubber asphalt in the paving process is promoted;

in another technical scheme, the construction method of the modified rubber asphalt comprises the following steps of reserving the width of the first rubberized glass fiber mesh cloth on the single side of the base layer: w₁(M-1.6)/2+ H, width of second sized fiberglass scrim: w₂H +0.4, width of third glued fiberglass scrim: w₃M-1.6, where M is the lane width in M and H is the underlying layer thickness in M. This is achieved byThe preferable reserved width of the first glued glass fiber gridding cloth on the single side of the base layer, the preferable width of the second glued glass fiber gridding cloth and the preferable width of the third glued glass fiber gridding cloth are listed, so that a sufficient connecting surface is reserved between the second glued glass fiber gridding cloth and the first glued glass fiber gridding cloth and between the second glued glass fiber gridding cloth and the third glued glass fiber gridding cloth, the connection is stable, meanwhile, the third glued glass fiber gridding cloth and the reserved first glued glass fiber gridding cloth can cover the wheel running track of most vehicles, and the anti-rutting performance of the asphalt pavement is enhanced.

In another technical scheme, the construction method of the modified rubber asphalt further comprises the step two of spreading the emulsified asphalt on the surface of the base layer immediately after spreading the emulsified asphalt, spreading the crushed stone on the surface of the emulsified asphalt and compacting, wherein the spreading amount of the emulsified asphalt is 0.85-0.95L/m²The particle size of the crushed stone is 5-10mm, and the spreading amount is 4m³/km². Before the first rubberized glass fiber mesh cloth is laid, gravels are scattered on the surface of the emulsified asphalt, so that the first rubberized glass fiber mesh cloth can be embedded into the gravels in the lower surface layer construction process, on one hand, the embedded bonding adhesion force is stronger relative to the plane bonding of the emulsified asphalt and the modified asphalt mixture, and on the other hand, the gravels also have a certain stress absorption effect, and the anti-rutting performance of the road surface can be further enhanced.

In another technical scheme, in the construction method of the modified rubber asphalt, the modified rubber asphalt mixture refers to the preparation of an ARAC-13 discontinuous graded rubber asphalt mixture, wherein the mixing amount of the tire rubber powder in the modified rubber asphalt is 9% of the mass of the matrix asphalt. The modified rubber asphalt mixture is prepared according to the design requirements of the ARAC-13 discontinuous graded rubber asphalt mixture, and the difference is that the mixing amount of the tire rubber powder in the modified rubber asphalt mixture is 9% of the mass of the matrix asphalt, while the mixing amount of the tire rubber powder in the modified rubber asphalt mixture is 22% of the mass of the matrix asphalt in the conventional ARAC-13 discontinuous graded rubber asphalt mixture; the paving result shows that the asphalt pavement paved by the modified rubber asphalt mixture and the construction method of the invention has equivalent performance to the asphalt pavement paved by the prior ARAC-13 discontinuous gradation rubber asphalt mixture and the construction method under the same paving thickness, and the anti-rutting performance of the asphalt pavement paved by the method of the invention is slightly better than that of the asphalt pavement paved by the prior ARAC-13 discontinuous gradation rubber asphalt mixture.

In another technical scheme, as shown in fig. 1 and 2, in the construction method of the modified rubber asphalt, a first rubberized glass fiber mesh cloth, a second rubberized glass fiber mesh cloth and a third rubberized glass fiber mesh cloth are fixed with the surface of a base layer, the first rubberized glass fiber mesh cloth, the second rubberized glass fiber mesh cloth or a compaction lane by using a fixed trolley, the fixed trolley comprises,

the base plate 1 is horizontally arranged, and a handle 2 is arranged on the top surface of the rear end of the base plate 1;

the pressing wheel 3 is a solid wheel, is arranged at the front end of the bottom plate 1 and is arranged along the width direction of the bottom plate 1, two ends of the pressing wheel 3 are respectively and fixedly connected with the bottom surface of the bottom plate 1 through a first fixing support 4 which is vertically arranged, and the pressing wheel 3 is rotatably connected with the first fixing support 4;

the cooling wheel 4 is a hollow wheel, and is arranged at the rear end of the bottom plate 1 and arranged along the width direction of the bottom plate 1, the cooling wheel 4 includes a hollow cooling wheel shaft 41 and a cooling wheel sleeve 42 sleeved outside the hollow cooling wheel shaft, the cooling wheel sleeve 42 is rotatably connected with the hollow cooling wheel shaft 41, two ends of the hollow cooling wheel shaft 41 are respectively and fixedly connected with the bottom surface of the bottom plate 1 through a second fixing support 5 which is vertically arranged, the hollow cooling wheel shaft 41 is fixedly connected with the second fixing support 5, one end of the hollow cooling wheel shaft 41 is provided with a first air inlet pipe 43, the second fixing support 5 is provided with a through hole through which the first air inlet pipe 43 penetrates, a first channel 44 is formed between the cooling wheel sleeve 42 and the hollow cooling wheel shaft 41, one end of the first channel 44, which is far away from the first air inlet pipe 43, is provided with a plurality of first annular sheets 45 and a plurality of second annular sheets 46 in a staggered manner, the outer wall of any first annular sheet 45 is fixedly connected with the cooling wheel sleeve 42, the inner wall of the first annular sheet is not contacted with the hollow cooling wheel shaft, the inner wall of any second annular sheet 46 is fixedly connected with the hollow cooling wheel shaft, the outer wall of the first annular sheet is not contacted with the cooling wheel sleeve 42, a second channel 47 with a serpentine structure is formed between the first annular sheets 45 and the second annular sheets 46, a plurality of first air outlet holes communicated with the first channel 44 are formed in the side wall of the hollow cooling wheel shaft 41 at intervals, and a plurality of second air outlet holes communicated with the second channel 47 are formed in the end face, close to the second channel 47, of the cooling wheel sleeve 42 at intervals;

the air cooler 6 is arranged at the rear end of the bottom plate 1 and fixedly connected with the top surface of the bottom plate, and an air outlet of the air cooler 6 is communicated with the first air inlet pipe 43 through a first air outlet pipe 61;

the heating spray pipe 7 is arranged in front of the pinch roller 3 and arranged along the width direction of the bottom plate 1, the heating spray pipe 7 is fixedly connected with the bottom surface of the bottom plate 1 through a third fixing support 8 which is vertically arranged, two ends of the heating spray pipe 7 are closed, a second air inlet pipe is arranged on the upper side wall, a plurality of nozzles 71 are arranged on the lower side wall at intervals along the length direction of the lower side wall, and any nozzle 71 is higher than the bottom of the pinch roller 3;

and the high-pressure air heater 9 is arranged at the front end of the bottom plate 1 and is fixedly connected with the top surface of the bottom plate, and an air outlet of the high-pressure air heater 9 is communicated with the second air inlet pipe through a second air outlet pipe 91.

In the technical scheme, the first glued glass fiber mesh cloth, the second glued glass fiber mesh cloth and the third glued glass fiber mesh cloth are fixed with the base layer, the first glued glass fiber mesh cloth, the second glued glass fiber mesh cloth or the surface of the compacted lane through the fixed trolley, specifically, the fixed trolley comprises a bottom plate, a handle arranged on the top surface of the rear end of the bottom plate, a heating spray pipe, a pressing wheel and a cooling wheel which are arranged below the bottom plate and are sequentially arranged from front to back, and a high-pressure hot air blower and an air cooler which are arranged above the bottom plate, wherein the handle is used for being held by a worker and pushing the fixed trolley to move forward or backward; the pressing wheel is a solid wheel, two ends of the pressing wheel are fixedly connected with the bottom plate through a first fixing support which is vertically arranged, the pressing wheel is rotatably connected with the first fixing support, and the pressing wheel is used for pressing the glued glass fiber mesh cloth to be bonded, the base layer or the surface of the compacted lane; the cooling wheel is a hollow wheel and comprises a hollow cooling wheel shaft and a cooling wheel sleeve which is sleeved outside the hollow cooling wheel shaft and is rotationally connected with the hollow cooling wheel shaft, two ends of the hollow cooling wheel shaft are respectively and fixedly connected with the bottom plate 1 through a second fixing support which is vertically arranged, the hollow cooling wheel shaft is fixedly connected with the second fixing support, one end of the hollow cooling wheel shaft is provided with a first air inlet pipe which is communicated with the interior of the hollow cooling wheel shaft, the first air inlet pipe penetrates through the second fixing support and is communicated with a first air outlet pipe on the air cooler, a first channel is formed between the hollow cooling wheel shaft and the cooling wheel sleeve, the side wall of the hollow cooling wheel shaft is provided with a plurality of first air outlet holes which are communicated with the first channel, one end of the first channel, far away from the first air inlet pipe, is provided with a plurality of first annular sheets and a plurality of second annular sheets in a staggered manner, the first annular sheets and the second annular sheets are respectively and fixedly connected with, a plurality of second air outlet holes communicated with the second channel are formed in the end face, close to the second channel, of the cooling wheel sleeve at intervals, cold air generated by an air cooler enters the first channel through the first air outlet pipe, the first air inlet pipe, the hollow cooling wheel shaft and the first air outlet holes in sequence to exchange heat with the cooling wheel sleeve, the cooling wheel sleeve is cooled and then discharged through the second channel and the second air outlet holes, and the cooling wheel is used for cooling the compacted rubberized glass fiber mesh cloth, the base layer or the surface of the compacted lane; the both ends of heating spray tube are respectively through vertical setting's third mount and bottom plate fixed connection, the both ends of heating spray tube are sealed, be equipped with the second intake pipe on the lateral wall, be equipped with a plurality of nozzles along its length direction interval on the lateral wall down, second intake pipe and the second on the high pressure air heater play tuber pipe intercommunication, high pressure high temperature hot-blast that the high pressure air heater produced goes out the tuber pipe through the second in proper order, second intake pipe and heating spray tube back, by the nozzle blowout, treat the gluey glass fiber net cloth that adds that bonds, basic unit or compaction lane surface heats, make the glue local melting in the gluey glass fiber net cloth that adds that treats to bond, realize with adjacent gluey glass fiber net cloth, the bonding on basic unit or compaction lane surface.

When the device is used, the power supply of a high-pressure hot air fan and an air cooler is switched on, a worker holds a handle to push a fixed trolley to move forward, the speed is controlled to be less than 20m/min, hot air is sprayed out of a nozzle in a heating spray pipe in the process of moving forward, the glued glass fiber mesh cloth to be bonded is heated, glue in the glued glass fiber mesh cloth is locally melted and is preliminarily bonded with the surface of an adjacent glued glass fiber mesh cloth, a base layer or a compaction lane, then a compaction wheel compresses the glued glass fiber mesh cloth which is locally melted by the glue and the surface of the adjacent glued glass fiber mesh cloth, the base layer or the compaction lane to realize further bonding, and finally, the glued glass fiber mesh cloth bonded by the cooling wheel and the surface of the adjacent glued glass fiber mesh cloth, the base layer or the compaction lane are cooled and solidified to realize that the glued glass fiber mesh cloth to be bonded and the adjacent glued glass fiber mesh cloth, Substrate or compacted roadway surface immobilization.

In another technical scheme, as shown in fig. 1 and fig. 2, in the construction method of the modified rubber asphalt, the lengths of the heating spray pipe 7, the pressing wheel 3 and the cooling wheel 4 are 30-40cm, the diameters of the pressing wheel 3 and the cooling wheel 4 are equal, and the distance is not less than 50 cm. The lengths of the heating spray pipe, the pressing wheel and the cooling wheel are preferably 30-40cm, so that the flexibility of the fixed trolley and the bonding stability of the glued glass fiber mesh cloth are considered; the distance between the pressing wheel and the cooling wheel is preferably not less than 50cm, so that the air flow interference between the pressing wheel and the cooling wheel is reduced, and the cooling effect of the cooling wheel is improved.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the method of constructing the modified rubber asphalt of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.