阅读说明：本技术 一种公路养护中含砂雾封层的施工方法 (Construction method of sand-containing fog seal in highway maintenance ) 是由 吴岳明 刘德朋 高稳成 张毅 孙义林 于庆民 于 2020-04-26 设计创作，主要内容包括：本发明涉及公路养护的技术领域,具体公开了一种公路养护中含砂雾封层的施工方法,包括以下步骤：S1、进入待养护路段,在待养护路段进行车道重新分流；S2、对待养护路段的路面测试；S3、路面清理；S4、交通设施保护；S5、路面病害处理；S6、喷涂含砂雾封层；S7：二次封层；S8、修补处理：将设备没喷洒到的路面进行修补封层；S9、清理施工杂物,撤场；S10、开放交通。本发明的有益效果为：在进行路面修复之前,首先对路面的各种系数进行测量,根据上述测量数据确定喷涂材料的分量比,混合成涂料进行喷涂,喷涂的层数也根据上述测量结构来确定,在喷涂之前,对路面的病害先处理,再进行封层处理,提高了封层的均匀性与稳定性。(The invention relates to the technical field of highway maintenance, and particularly discloses a construction method of a sand-containing fog seal in highway maintenance, which comprises the following steps: s1, entering a road section to be maintained, and shunting again on the lane in the road section to be maintained; s2, testing the road surface of the road section to be maintained; s3, cleaning the road surface; s4, protecting traffic facilities; s5, treating road surface diseases; s6, spraying a sand-containing fog seal layer; s7: secondary sealing; s8, repairing: repairing and sealing the road surface which is not sprayed by the equipment; s9, cleaning construction sundries and removing the yard; and S10, opening traffic. The invention has the beneficial effects that: before pavement repair, various coefficients of the pavement are measured, the component ratio of the spraying materials is determined according to the measurement data, the mixed coating is sprayed, the number of sprayed layers is also determined according to the measurement structure, and before spraying, the diseases of the pavement are treated first and then sealed, so that the uniformity and the stability of the sealed layer are improved.)

1. A construction method of a sand-containing fog seal in highway maintenance is characterized by comprising the following steps:

s1, entering a road section to be maintained, and shunting again on the lane in the road section to be maintained;

s2, testing the road surface water seepage coefficient, the friction coefficient and the construction depth of the road section to be maintained, determining the precise proportion of the raw materials of the sand-containing fog sealing layer according to the tested water seepage coefficient, the tested friction coefficient and the construction depth, and preparing spraying liquid according to the proportion;

s3, road surface cleaning: cleaning particles and soil on the road surface through a blowing instrument, spraying a mixed solution of water and a cleaning agent by using a high-pressure water gun for a road section which is difficult to clean, and waiting for the water on the road surface to be completely evaporated after cleaning;

s4, traffic facility protection: covering the marked line by using a plastic adhesive tape or a rubber sheet for protection;

s5, treating road surface diseases: aiming at different types of pavement diseases, different means are adopted for repairing;

s6, spraying a sand-containing fog seal layer: adding fine sand into the spraying liquid prepared in the step S2, uniformly stirring, and spraying a layer of sealing layer by a high-pressure spraying vehicle, wherein the environmental temperature is not lower than 10 degrees;

s7, after the sealing layer is completely penetrated and dried in the step S6, testing the water seepage coefficient, the friction coefficient and the construction depth of the road surface again, and determining whether to spray a second sealing layer according to the test result;

s8, repairing: repairing and sealing the road surface which is not sprayed by the equipment;

s9, cleaning construction sundries and removing the yard;

and S10, opening traffic.

2. The construction method of the sand-containing fog seal in highway maintenance according to claim 1, wherein the spraying liquid in step S2 comprises the following raw materials by volume:

MasterSeal concentrated sealing fabric 100L

20-25L of water

2-4L of TopTuff polymer additive;

according to the volume ratio of the raw materials of the spraying liquid, the adding amount of the fine sand in the step S6 is 30-55 kg.

3. The construction method of sand-containing fog seal in highway maintenance according to claim 1, wherein the type and treatment method of the road surface defect in step S5 are as follows:

a. when the width of the pavement crack is larger than 12mm, performing crack pouring by using hot patching sealant, cleaning the crack during crack pouring, and controlling the construction environment temperature to be more than 5 ℃;

b. when the width of a pavement crack is less than or equal to 12mm, a crack expanding machine is adopted for expanding the crack, the width after crack expansion is 12-15mm, then the crack is cleaned up, cold-patch crack pouring materials are adopted for pouring the crack, and the construction temperature is above 10 ℃;

c. adopting a crack repairing material to scrape and coat and strickly even the crack and the net crack road surface;

d. treating loose rough surface, and carrying out blade coating by using LiquidRoad;

e. and (4) pit treatment, namely treating by adopting a pavement damage repairing material, and filling the pavement into a level position.

4. The method of claim 3, wherein during the treatment of cracked and network-cracked road surface, dust, debris and intra-crack plants in the cracks of the road surface are cleaned and dried before the construction, 10-20 mesh basalt is sprayed in the construction area, the cracks are filled up with a scraper or a broom, the excess basalt in the construction area is cleaned up after the cracks are filled up, the crack repairing material is poured into the construction area, the repairing material is repeatedly scraped with a scraper with rubber at the bottom, the amount of the repairing material is determined by completely covering the surface of the crack repairing agent after the crack repairing material is scraped, the time is 30-60 minutes after the crack repairing agent is dried, and the construction temperature is above 10 ℃.

5. The method of claim 3, wherein the Liquidroad is coated with glue or brush hair for one or two times during the treatment of loose rough road surface, the road surface is clean and free of impurities during the treatment, and the construction temperature is above 10 ℃.

6. The construction method of the sand-containing fog seal in the road maintenance according to claim 3, characterized in that when the pavement pit is treated, the pavement damage repair material is filled into the pit, and is tamped down by using a pick, a leather hammer and a brush, the pit is clean, free of impurities and loose during construction, and the construction temperature is above 10 ℃.

7. The method of claim 1, wherein an angle of 10-45 ° is formed between a central line of an opening of an oil nozzle of the high pressure spray truck and an axial direction of an oil spray pipe.

8. The construction method of the fine anti-sliding seal layer according to claim 3, wherein the height of the oil nozzle from the ground is 350-450mm and fixed; the distance between the adjacent oil nozzles is 200-400mm, the spraying widths of the oil nozzles are overlapped with each other, and the oil nozzles receive the material layers sprayed by two or three oil nozzles at the same place.

Technical Field

The invention relates to the technical field of highway maintenance, in particular to a construction method of a sand-containing fog seal layer in highway maintenance.

Background

As society develops, roads become arteries connecting cities. And a place or a city needs to be developed, and firstly, the road construction needs to be synchronous with the city development. After the road is used for a period of time, due to the fact that traffic flow is large, heavy trucks roll, the road surface can be damaged in different degrees, maintenance needs to be conducted on the road surface, when cracks, pits and the like appear on the road surface, large-scale repair is conducted in the traditional method, the cost is high, construction time is short, and urban development and traffic are not facilitated.

In the prior art relating to sand-containing fog sealing layer, for example, chinese published patent (application number: ZL 201711203757.0, patent name: low-adhesion asphalt pavement for automobile test and laying method thereof), includes the following steps: s1, closing traffic on the construction road section; s2, before the original pavement is cleaned, the original asphalt pavement is cleaned by a blower mechanism until no obvious sundries and dust exist; s3, spreading the bonding layer, spraying a bonding material on the pavement by using a spreader to form the bonding layer, forbidding rain after construction is finished, and airing for more than 3 hours until the pavement is completely dry; wherein the amount of the material is 0.1-0.3 kg/m²(ii) a S4, spreading the modified emulsified asphalt and fine aggregate mixed layer, mixing and stirring the modified emulsified asphalt material and 80-100 meshes of quartz sand, spraying the mixture onto the road surface by using a spreader, uniformly scraping the mixture to form the modified emulsified asphalt and fine aggregate mixed layer, after the construction is finished, prohibiting rain, and airing for more than 3 hours until the road surface is completely dry; wherein the amount of the material is 2.0-3.0 kg/m²(ii) a S5, spreading a sand-containing fog seal: mixing and stirring the fog sealing material and 80-100 meshes of quartz sand, spraying the mixture onto a road surface by using a spreader to form a sand-containing fog sealing layer, forbidding rain within 24 hours after construction is finished, and carrying out closed maintenance for more than 3 days to obtain the low-attachment asphalt road surface; wherein the amount of the material is 0.5-1.0 kg/m²(ii) a S6, performance test: and (5) inspecting the road surface adhesion coefficient, and transferring for use after the inspection is qualified.

In the technical scheme, only simple sand-containing fog sealing treatment is carried out on the paved road surface, spraying materials with different proportions are not adopted for spraying according to different road surface conditions, the number of sprayed layers is not determined according to the road surface conditions, and the method cannot completely solve the problem of complex road surfaces for the treatment of high-requirement road surfaces.

Therefore, it is necessary to provide a new road surface repairing method to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a construction method of a sand-containing fog seal in highway maintenance, which comprises the steps of firstly measuring various coefficients of a pavement before repairing the pavement, determining the component ratio of a spraying material according to the measurement data, mixing the spraying material into a coating for spraying, determining the number of sprayed layers according to the measurement structure, and treating various diseases on the pavement before spraying and then sealing the coating, so that the uniformity and the stability of the seal are improved.

The above object of the present invention is achieved by the following technical solutions:

a construction method of a sand-containing fog seal in highway maintenance comprises the following steps:

s1, entering a road section to be maintained, and shunting again on the lane in the road section to be maintained;

s2, testing the road surface water seepage coefficient, the friction coefficient and the construction depth of the road section to be maintained, determining the precise proportion of the raw materials of the sand-containing fog sealing layer according to the tested water seepage coefficient, the tested friction coefficient and the construction depth, and preparing spraying liquid according to the proportion;

s3, road surface cleaning: cleaning particles and soil on the road surface through a blowing instrument, spraying a mixed solution of water and a cleaning agent by using a high-pressure water gun for a road section which is difficult to clean, and waiting for the water on the road surface to be completely evaporated after cleaning;

s4, traffic facility protection: covering the marked line by using a plastic adhesive tape or a rubber sheet for protection;

s5, treating road surface diseases: aiming at different types of pavement diseases, different means are adopted for repairing;

s6, spraying a sand-containing fog seal layer: adding fine sand into the spraying liquid prepared in the step S2, uniformly stirring, and spraying a layer of sealing layer by a high-pressure spraying vehicle, wherein the environmental temperature is not lower than 10 degrees;

s7, after the sealing layer is completely penetrated and dried in the step S6, testing the water seepage coefficient, the friction coefficient and the construction depth of the road surface again, and determining whether to spray a second sealing layer according to the test result;

s8, repairing: repairing and sealing the road surface which is not sprayed by the equipment;

s9, cleaning construction sundries and removing the yard;

and S10, opening traffic.

By adopting the technical scheme: before the spraying of the sand-containing fog layer is carried out, various diseases on the road surface are firstly treated, so that the disease positions are flush with the original road surface, the smoothness and stability of a subsequently coated coating layer are ensured, then the weight ratio of components in the coating is determined according to the road condition test coefficient to mix the coating, and the sprayed layer number is also determined according to the test result.

The present invention in a preferred example may be further configured to: the volume part mixture range of the raw materials of the spraying liquid in the step S2 is as follows:

MasterSeal concentrated sealing fabric 100L

20-25L of water

2-4L of TopTuff polymer additive;

according to the volume ratio of the raw materials of the spraying liquid, the adding amount of the fine sand in the step S6 is 30-55 kg.

By adopting the technical scheme: effectively improves the wear resistance and the water resistance of the road surface. The proportion of the materials is determined by tested road surface coefficients.

The present invention in a preferred example may be further configured to: the road surface disease type and the processing method in the step S5 are as follows:

a. when the width of the pavement crack is larger than 12mm, performing crack pouring by using hot patching sealant, cleaning the crack during crack pouring, and controlling the construction environment temperature to be more than 5 ℃;

b. when the width of a pavement crack is less than or equal to 12mm, a crack expanding machine is adopted for expanding the crack, the width after crack expansion is 12-15mm, then the crack is cleaned up, cold-patch crack pouring materials are adopted for pouring the crack, and the construction temperature is above 10 ℃;

c. adopting a crack repairing material to scrape and coat and strickly even the crack and the net crack road surface;

d. treating loose rough surface, and carrying out blade coating by using LiquidRoad;

e. pit and groove treatment, namely treating by adopting a pavement damage repairing material, and filling the pavement to be level;

by adopting the technical scheme: different treatment modes are adopted for various different pavement diseases, the pavement diseases are eliminated, the original pavement is basically level, and the flatness and the integrity of the coating are improved.

The present invention in a preferred example may be further configured to: when the crack and the net crack are treated, dust, scraps and intra-crack plants in the cracks of the road surface are cleaned and dried before construction, proper amount of 10-20 meshes of basalt is sprayed in a construction area, the cracks are filled up by using a scraper blade or a broom, the redundant basalt in the construction area is cleaned after the cracks are filled up, the crack repairing material is poured into the construction area, the repairing material is repeatedly scraped by using the scraper blade with rubber at the bottom, the dosage is based on the condition that the surface of the crack repairing agent is completely covered after the crack repairing material is scraped, the drying is carried out for 30-60 minutes, and the construction temperature is above 10 ℃.

By adopting the technical scheme: the method eliminates crack and network crack of the road surface, enables the disease to be basically level with the original road surface, and improves the flatness and integrity of the coating.

The present invention in a preferred example may be further configured to: when loose rough road surfaces are treated, the LiquidRoad is subjected to blade coating once or twice by using a glue scraping brush or a long hair brush, the road surfaces are clean and have no impurities during treatment, and the construction temperature is above 10 ℃.

By adopting the technical scheme: the method eliminates crack and network crack of the road surface, enables the disease to be basically level with the original road surface, and improves the flatness and integrity of the coating.

The present invention in a preferred example may be further configured to: when the pit slot on the road surface is treated, the pavement damage repairing material is filled into the pit slot, the pick, the leather hammer and the brush are used for tamping, the pit slot is clean, free of impurities and loose during construction, and the construction temperature is above 10 ℃.

By adopting the technical scheme: the pavement pit is filled with the filler and then tamped to be flush with the original pavement.

The present invention in a preferred example may be further configured to: the central line of the opening seam of the oil nozzle opening of the high-pressure spraying vehicle forms an included angle of 10-45 degrees with the axial direction of the oil spraying pipe.

By adopting the technical scheme: avoid the angle too big, cause the increase of injection lift, fan-shaped oil spout fog flies upward, causes the coating inhomogeneous.

The present invention in a preferred example may be further configured to: the height of the oil nozzle from the ground is 350-450mm and is fixed; the distance between the adjacent oil nozzles is 200-400mm, the spraying widths of the oil nozzles are overlapped with each other, and the oil nozzles receive the material layers sprayed by two or three oil nozzles at the same place.

By adopting the technical scheme: according to the tested road condition coefficient, the setting position of the oil nozzle and the spraying amount of the spraying material are determined, and the repairing time and the labor are saved.

In summary, the invention includes at least one of the following beneficial technical effects:

1. before pavement repair, various coefficients of the pavement are measured, the component ratio of the spraying materials is determined according to the measurement data, the mixed coating is sprayed, the number of sprayed layers is also determined according to the measurement structure, various diseases of the pavement are treated before spraying, and then sealing treatment is carried out, so that the uniformity and the stability of the sealing layer are improved.

2. The antiskid performance of the road surface is improved, the water seepage coefficient of the road surface is reduced, and the service life of the road is prolonged.

Detailed Description

The present invention will be described in further detail below.