阅读说明：本技术 一种坑洞新旧路面封边侧面贴及施工方法 (Side surface sticker for new and old road surface sealing of pit and construction method ) 是由 吕文明 韦靖峰 杜侃 葛立明 朱海南 周伟武 陈晴 王奔宇 于 2019-09-09 设计创作，主要内容包括：本发明属于路面工程技术领域,具体涉及一种坑洞新旧路面封边侧面贴及施工方法；其中,坑洞新旧路面封边侧面贴,包括贴条,贴条的两表面均具有粘结性,一表面用于粘贴于坑洞铣刨后的旧路面的竖向立壁,另一表面用于与待摊铺的混合料粘合；所述贴条为复合物防水胶,当温度上升至预设温度,贴条由固体转变为胶体；贴条的两表面分别贴附有保护膜。本发明的坑洞新旧路面封边侧面贴,应用于坑洞新旧路面的接缝处,可有效解决新旧沥青路面的粘结,使其形成区域整体性,有效起到防水作用。(The invention belongs to the technical field of pavement engineering, and particularly relates to a side surface sticker for a new and old pavement sealing side of a pit and a construction method; the side surface sticker of the new and old pavement sealing side of the pot hole comprises a sticker, wherein two surfaces of the sticker have cohesiveness, one surface of the sticker is used for being stuck to a vertical wall of the old pavement milled and planed by the pot hole, and the other surface of the sticker is used for being stuck with a mixture to be paved; the adhesive tape is a composite waterproof adhesive, and when the temperature rises to a preset temperature, the adhesive tape is changed from a solid to a colloid; protective films are respectively attached to the two surfaces of the adhesive strip. The edge sealing side surface paste for the new and old pavement of the pot hole is applied to the joint of the new and old pavement of the pot hole, can effectively solve the problem of bonding of the new and old asphalt pavement, enables the new and old asphalt pavement to form regional integrity, and effectively plays a role in water prevention.)

1. The side surface sticker for the new road surface and the old road surface of the pit is characterized by comprising a sticker, wherein two surfaces of the sticker have cohesiveness, one surface of the sticker is used for being stuck to a vertical wall of the old road surface milled and planed in the pit, and the other surface of the sticker is used for being stuck with a mixture to be paved; the adhesive tape is a composite waterproof adhesive, and when the temperature rises to a preset temperature, the adhesive tape is changed from a solid to a colloid; protective films are respectively attached to the two surfaces of the adhesive strip.

2. The edge-sealing side sticker for the new and old pavement of a pit as claimed in claim 1, wherein the softening point of the sticker is 75-110 ℃.

3. the edge sealing side sticker for the new and old pavement of a pit as claimed in claim 1, wherein the width of the sticker is 3-10 cm.

4. the edge sealing side sticker for the new and old pavement of a pit as claimed in claim 3, wherein the width of the sticker is 4cm or 10 cm.

5. A pit new and old road surface edge sealing construction method is characterized by comprising the following steps:

milling a pothole, and selecting the side paste according to any one of claims 1 to 4 matched with the pothole according to the depth of the pothole;

Tearing off the protective films on the two surfaces of the strip, wherein one surface of the protective film is adhered to the vertical wall of the old pavement milled and planed by the pit;

paving the mixture, wherein the mixture covers the other surface of the welt; and rolling after paving.

6. The edge banding construction method for the new and old road surface of the pit as claimed in claim 5, wherein in the second step, after the strip is adhered to the vertical wall of the old road surface milled by the pit, the strip is further fixed on the vertical wall of the old road surface milled by the pit through a fixing member.

7. the method for sealing edges of new and old road surfaces of a pit according to claim 6, wherein the fixing pieces are iron nails.

8. the edge sealing construction method for the new and old road surfaces of the pit according to claim 5, wherein the paving temperature of the mixture is 130-160 ℃.

9. the edge sealing construction method for the new and old road surfaces of the pit according to claim 8, wherein the mixture is asphalt mixture.

10. The edge sealing construction method for the new and old road surfaces of the pit according to claim 5, wherein in the first step, the pit is milled and cleaned by blowing air.

Technical Field

the invention belongs to the technical field of pavement engineering, and particularly relates to a side surface sticker for a new and old pavement sealing side of a tunnel and a construction method.

Background

The pavement pot holes are one of common road diseases, and if the pavement pot holes cannot be timely treated, the pavement pot holes can bear the infiltration of pavement water and the impact action of passing vehicle loads, so that the service life and the driving comfort of a pavement structure are seriously influenced. In the traditional pouring and sealing edge construction of a road surface pot hole, the disease paving and rolling are finished, the disease boundary line is poured into the disease and the original asphalt road surface edge by hot asphalt (hot pouring) or finished pouring glue (cold pouring), the water isolation effect is achieved, and the following defects are overcome:

Firstly, the water seepage performance is general, and after the traditional disease treatment, the water seepage test is carried out at a side line, and the water seepage performance is poorer than that of a new road surface and an old road surface at the side line;

the surface crack pouring agent at the edge sealing position of the traditional crack pouring is easy to scatter and soften under the action of wheel load and high-temperature weather, and is easy to fall off under the action of external force such as pushing of wheels and the like, so that the generation of early diseases at the side line is easy to cause;

Thirdly, the flatness is influenced, the crack pouring and edge sealing agent forms separation between bulges and the asphalt surface in a low-temperature solid state, the flatness of the pavement is influenced, and the travelling comfort is further influenced;

And fourthly, the visual perception is influenced, after the edge sealing is finished, the surfaces of the new and old pavements are separated by the pouring sealant to form a disease frame, and after 2-3 months, the color difference between the surface of the new asphalt pavement and the surface of the old pavement is smaller, but the new asphalt pavement and the old pavement are still separated by the disease frame.

Therefore, a new sealing scheme for the old and new road surfaces of the pot holes is urgently needed in the field.

disclosure of Invention

Based on the defects in the prior art, the invention provides a side surface sticker for the sealing side of a new road surface and an old road surface of a tunnel and a construction method.

In order to achieve the purpose, the invention adopts the following technical scheme:

The side surface sticker for the new and old road surfaces of the pit comprises a sticker, wherein two surfaces of the sticker have cohesiveness, one surface of the sticker is used for being stuck to a vertical wall of the old road surface milled and planed in the pit, and the other surface of the sticker is used for being stuck with a mixture to be paved; the adhesive tape is a composite waterproof adhesive, and when the temperature rises to a preset temperature, the adhesive tape is changed from a solid to a colloid; protective films are respectively attached to the two surfaces of the adhesive strip.

Preferably, the softening point of the welt is 75-110 ℃.

Preferably, the width of the sticker is 3-10 cm.

Preferably, the width of the strip is 4cm or 10 cm.

The invention also provides a pit new and old road surface edge sealing construction method, which comprises the following steps:

Firstly, milling a pothole, and selecting the side surface sticker matched with the pothole according to the depth of the pothole in any scheme;

Tearing off the protective films on the two surfaces of the strip, wherein one surface of the protective film is adhered to the vertical wall of the old pavement milled and planed by the pit;

paving the mixture, wherein the mixture covers the other surface of the welt; and rolling after paving.

preferably, in the second step, after the strip is attached to the vertical wall of the old pavement milled by the pothole, the strip is further fixed to the vertical wall of the old pavement milled by the pothole through the fixing member.

preferably, the fixing piece is an iron nail.

Preferably, the paving temperature of the mixture is 130-160 ℃.

Preferably, the mixture is asphalt.

Preferably, in the first step, the pit is milled and cleaned by blowing air.

Compared with the prior art, the invention has the beneficial effects that:

The edge sealing side surface paste for the new and old pavement of the pot hole is applied to the joint of the new and old pavement of the pot hole, can effectively solve the problem of bonding of the new and old asphalt pavement, enables the new and old asphalt pavement to form regional integrity, and effectively plays a role in water prevention.

according to the edge sealing construction method for the new and old pavement of the pit, before the mixture is paved, the vertical wall of the old pavement milled and milled by the pit is pasted with the pasting strips pasted on the edge sealing side of the new and old pavement of the pit, and the mixture is rolled after paving is finished; the joint between the new and old road surfaces has excellent waterproof performance, and the connecting effect of the new and old road surface blocks is enhanced.

drawings

FIG. 1 is a schematic cross-sectional view of a pavement structure according to an embodiment of the present invention;

FIG. 2 is a schematic view of a conventional edge sealing construction structure for new and old road surfaces of a pot hole;

FIG. 3 is a schematic view of a disease frame left after edge sealing construction of a new road surface and an old road surface of a traditional pot hole;

FIG. 4 is a schematic cross-sectional view of a side patch according to an embodiment of the present invention;

FIG. 5 is a schematic view of a new and old road surface edge sealing construction structure according to an embodiment of the present invention;

Fig. 6 is a comparison graph of a water seepage test performed by the edge sealing construction method for the new and old road surfaces of the pot hole according to the embodiment of the invention and the conventional construction process.

Detailed Description

The technical solution of the present invention will be further explained by the following specific examples.

The embodiment of the invention is illustrated by an actual engineering overview, wherein, as shown in fig. 1, the pavement structure comprises a subbase layer 1, a main line base layer 2, a lower layer 3, a middle layer 4 and an upper layer 5, the subbase layer 1 adopts 34cm (17cm +17cm) of cement-stabilized macadam, the main line base layer 2 adopts 20cm of cement-stabilized macadam, the lower layer 3 is 8cm of coarse grain asphalt concrete AC-25(I) type, the middle layer 4 is 6cm of middle grain asphalt concrete AC-20(I) type, and the upper layer 5 is a 4cm SBS modified asphalt AC-13(A) antiskid surface layer.

When a pothole appears on the road surface, the traditional construction process is to adopt a seam pressing belt or an anti-cracking paste. The joint strip is illustrated by an example, one surface of the joint strip is made of an anti-wrinkle heavy-load-resistant polypropylene material (without adhesiveness) with the thickness of 0.3mm, the other surface of the joint strip is made of a polymer waterproof film (with adhesiveness) with the thickness of 2mm, the joint strip is subjected to a new road surface and an old road surface edge sealing process, as shown in fig. 2, after disease paving and rolling are finished, a disease edge line is firstly poured into the edges of the disease and the original asphalt road surface by hot asphalt (hot pouring) 6 or finished pouring glue (cold pouring), and then the joint strip is attached to the edge of the new road surface and the old road surface, so that due to the material characteristics, the water seepage index and the adhesiveness of the joint of the new road surface and the old road surface are poor, and a 'disease frame' 7.

Based on this, as shown in fig. 4, the side surface sticker for the new and old pavement sealing of the pothole in the embodiment of the invention comprises a sticker 10, wherein both surfaces of the sticker have cohesiveness, one surface is used for being stuck to the vertical wall of the old pavement milled by the pothole, and the other surface is used for being stuck with the mixture to be paved. The strip 10 is a composite waterproof adhesive (such as an asphalt cementing material), is solid at normal temperature and is colloidal when meeting high temperature; when the temperature rises to the preset temperature, the welt is changed from solid to colloid, namely, the welt can be directly changed from solid to colloid in the process of paving the mixture, so that the joints between the new and old pavements are fully filled with the compound waterproof glue during rolling, and the new and old pavement slabs can be well connected. In addition, protective films 11 are attached to both surfaces of the seal tape 10, respectively, to protect the seal tape. The mixture is preferably a common asphalt material, the softening point of the welt is 75-110 ℃, and the welt is matched with the paving temperature of the mixture of 130-160 ℃, so that the welt is converted into a colloid state from a solid state in the paving process of the mixture. In order to match with actual construction, the width of the sticking strip is designed to be 3-10 cm; the width of the strip is 4cm or 10 cm. The performance of the side surface paste for the new and old pavement sealing of the pothole in the embodiment of the invention is detected as shown in table 1:

TABLE 1 Performance test Table for new and old pavement edge-sealing side surface stickers of potholes

Through detection, all performance indexes of the side surface stickers on the new and old pavement sealing surfaces of the pit hole in the embodiment of the invention all reach the technical standard; the softening point, the low-temperature flexibility at-10 ℃ and the low-temperature stretching amount data of the detection result can be used for judging, and the side surface paste can enable the new and old pavement slab blocks to play a good connecting role.

The edge surfaces of the new and old pavement sealing surfaces of the pot holes are pasted with a roll of adhesive tape, so that the pot holes are convenient to carry; the cutting can be carried out according to the sizes of different pits; finally, the problem of bonding of the old asphalt pavement and the new asphalt pavement can be effectively solved, so that the asphalt pavement and the old asphalt pavement form regional integrity, and the waterproof effect is effectively achieved.

the invention also provides a construction method for sealing edges of the old and new road surfaces of the pot holes, which is based on the side surface paste of the sealing edges of the old and new road surfaces of the pot holes and comprises the following steps:

firstly, milling a pothole, and selecting a side surface patch matched with the pothole according to the depth of the pothole; specifically, the damaged layer corresponding to the pit hole is milled, and air blowing and cleaning can be performed after milling is completed, so that the connection performance of new and old pavement plates can be improved; as shown in fig. 5, the middle layer and the upper layer corresponding to the pothole may be milled and then spread, and only the side surface sticker needs to be disposed on the upper layer, or of course, the side surface sticker may also be disposed on the middle layer, and the description will be given by setting the side surface sticker on the upper layer.

and step two, after the milling of the damaged layer is finished, fixing the adhesive tape of the asphalt cementing material at the joint of the new road surface and the old road surface in a solid state, specifically, tearing off the protective films on the two surfaces of the adhesive tape, and adhering the right surface of the adhesive tape to the vertical wall of the old road surface milled by the pot hole and leveling the right surface of the adhesive tape with the vertical wall. In addition, in order to prevent the side surface strips from falling off, the attachment strips can be fixed on the vertical wall of the old pavement milled by the pits through fixing pieces (such as iron nails, steel nails and the like), and the condition that the side surface strips are easy to be pushed by asphalt mixture in the subsequent paving process and cannot generate the corresponding effect, so that early diseases at the seams of the old pavement and the new pavement are generated can be prevented.

Paving the mixture, wherein the mixture covers the other surface of the welt; and rolling after paving. Specifically, the mixture is preferably asphalt, the asphalt is paved through a paver, the paving temperature of the mixture is 130-160 ℃, and after paving is completed, the asphalt mixture covers the left surface of the sticking strip; after the preparation of each procedure is finished, normally spreading and rolling, and changing the cementing material into colloid by using the characteristic that the asphalt cementing material is solid at normal temperature and is colloid at high temperature so as to replace the traditional crack pouring adhesive.

as shown in fig. 6, when the edge sealing construction method for the new and old road surfaces of the pot hole according to the embodiment of the present invention and the conventional construction process are subjected to a water seepage test, it can be seen that the conventional edge sealing process cannot meet the standard requirements at the side line during the water seepage test, and the numerical value difference is large (as the upper curve in fig. 6); the edge sealing process provided by the embodiment of the invention can basically meet the standard requirements in a water seepage test at the side line, and the water seepage is greatly improved compared with the traditional process (such as a lower curve in fig. 6). Therefore, the edge sealing side surface paste for the new and old pavements of the pot holes is applied to the joints of the new and old pavements of the pot holes, can effectively solve the problem of bonding of the new and old asphalt pavements, enables the new and old asphalt pavements to form regional integrity, and effectively plays a role in water resistance.

The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.