Why can t the water seep down after using asphalt pavement joints?

Thiswithasphalt pavement structural layer！The asphalt pavement structure layer includes a surface layer, a base layer, a subbase layer, and a cushion layerIt belongs to the category of flexible pavement.

The asphalt road structure layer each bears different roles, wherein, the structural layer - cushion layer that is arranged between the subbase and the soil foundation mainly plays the role of water insulation and drainage.

The cushion is between the base layer and the soil foundationIn the latest "Highway Asphalt Pavement Design Code", the cushion is classified as a functional layer or a subgrade disposal layer. Not all pavement structures need to be provided with cushions, only when the soil foundation is in a bad state, such as wet areas, wet and soft soil foundations, frost heave soil foundations in the northern region, etc., the cushion should be set up to exclude the free water retained in the pavement and roadbed, and ensure that the pavement structure is in a dry or moderately wet state.

The cushion mainly plays the role of water insulation (groundwater, capillary water), drainage (infiltration water), temperature insulation (frost heave, slurry), and transmits and diffuses the load stress from the base layer to ensure that the roadbed works within the allowable stress range.

The material strength of the cushion is not necessarily very high, but the temperature insulation and water insulation should be good, and the principle of local materials is generally taken, and loose granular materials such as coarse sand, gravel, gravel, cinder, and slag are selected, or cement, lime and cinder are used to stabilize the dense cushion. Some developed countries use polystyrene board as a thermal insulation material.

According to my many years of work experience, this is because the pavement seam tape is mainly for the pavement cracks to play a role in water isolation and seepage, the seam tape is pasted on the surface of the cracks, and the vehicle rolling pressure and the road surface form a complete waterproof and impermeable layer, which can cut off the rain and snow underwater infiltration path, thereby reducing the water damage of the road surface. Therefore, the Jiage pavement seam tape can be used to repair cracks on the highway pavement.

Summary. For asphalt pavement that has seen water seepage, or pavement that has been damaged by early potholes, certain remedial measures should be taken to restore the waterproof function and pavement use function of asphalt pavement surface in time to reduce the continuous damage of water to pavement.

For asphalt pavement that has seen water seepage, or the pavement that has been damaged by early potholes, certain remedial measures should be taken, and the bridge congregation should restore the waterproof function of the asphalt pavement surface in a timely manner, so as to reduce the continuous damage of water to the road potato surface.

It can be treated by slurry sealing layer and micro surface, pit cold repair, or asphalt wear layer.

Yes, the seam tape is used to repair cracks in asphalt pavement, and it is also a simple cold repair material, which can be easily used by anyone without professional training.

In the selection of seam tape, it is necessary to choose a non-tire base, which has large elasticity, and can be turned and pasted at will according to the direction of the crack. Huatong tireless base seam tape is an asphalt-based material with a thickness of millimeters. The construction method is simple:

First, clean up the soil and gravel in the cracks of the pavement, and the surface of the cracks should be clean and dry, and then tear off the film of the seam tape and directly attach the adhesive surface to the asphalt pavement for compaction. After the completion of the construction directly open to traffic, after the vehicle driving and rolling, the seam tape will gradually integrate with the cracks to achieve a good sealing and waterproof effect, this process is generally 1 month, and the driving will not be due to the protrusion of the seam belt and the feeling of jumping car.

However, the tire base is actually an anti-crack sticker, sandwiched with non-woven fabric, which can only be used for subgrade reinforcement pavement, mainly used for the renovation project of white to black, and can not be used for the repair of cracks on the surface of the asphalt road.

No. Non-woven seam tape is used for the roadbed (bottom layer). Repair asphalt pavement cracks can be used Huatong surface layer seam tape, is single-sided laminated, the material is asphalt-based, good wear resistance, elasticity, can be turned and pasted at will according to the crack direction, with good self-adhesiveness, simple construction, the road surface can be cleaned and pasted directly to the crack, and will not be taken away by the car.

After full rolling, it can be well integrated with the asphalt pavement, the sealing cracks are impermeable, and there will be no jumping phenomenon, and there is a significant advantage that when the snow is removed in winter, the snow shovel will not damage the seam belt. You can use it all year round.

The construction of the green seam belt does not require any equipment, saves the cost of expensive slotted seam filling machine or other patting heating equipment, only needs a small car for two people to build, and the construction personnel do not need professional training. Because the material does not need to be heated, it is now pasted, and the sewing is as long as it is pasted, and there is no material loss. For the maintenance unit, the use of Jiage asphalt pavement seam tape improves the timeliness of the maintenance work, so that the pavement disease can be solved in an earlier time, and improves the service life of the road, which is the embodiment of a large degree of economic benefits, and at the same time improves the construction efficiency of the maintenance unit and reduces the management cost.

In the past ten years, it has become an earlier product for repairing pavement cracks, just because the traditional asphalt itself is easy to flow in high temperature and brittle at low temperature, which always brings repeated workload to our maintenance workers. It increases the economic cost of road repair, and it does not have a good repair effect on the road surface. After the advent of road grout adhesive and asphalt pavement tape, the traditional asphalt repair method has been gradually replaced.

Asphalt pavement drainage is the first priority, so poor drainage will inevitably cause serious problems on the pavement. Overloading is a road"The number one killer", water is causing damage to the road surface. Due to the pores in the upper layer of asphalt, there is water seeping into the pavement after rain or snow, and there is still a lot of water in the pavement surface layer after a few days of rain due to the water blocking of the dirt shoulder.

A lot of water contained in it continuously collects to the crack and infiltrates along the crack, because the base strength is large, very dense, the water is difficult to drain out, and it is easy to cause the change of pavement interface condition and stress state. When the crack is less than 10mm, the crack can be treated with the road tape, and there is a lot between the cracks after the construction of the tape.

Pavement seam belt is dedicated to asphalt pavement crack repair, generally some asphalt pavement and asphalt concrete pavement cracks are used in Jiage pavement seam tape paste, simple operation, efficient construction efficiency, and jujube mu stool forest and strong durability, but if it is cement concrete pavement, it is not recommended that you use asphalt pavement to paste simple joint belt treatment, if you repair the cracks of concrete pavement, or use grout glue better, we have used grout glue to repair concrete cracks, the effect is good. Jointing tape is a commonly used road maintenance material, but the seam tape is only suitable for cracks with pavement cracks less than 10mm, otherwise it will affect the construction effect and fail to achieve the expected results.

I think the main function of the smock with seam tape is to fill the cracks to prevent rainwater from penetrating into the roadbed along the cracks, and the tensile strength does not matter, the main thing is to have strong adhesion to the road surface, and it cannot be taken away by the wheels after sticking. The asphalt tape is OK! The place where the asphalt joints are repaired has already been well integrated with the road.

In the past two years, it has not cracked in the case of -35 low temperature, and it has not been taken away by vehicle tires, and it has already been well integrated with the road surface, and there is no need to repair the road cracks this year. Asphalt-based, cohesive, very soft, after the high temperature asphalt oil in summer, the seam tape and the asphalt pavement are integrated into the crack and directly filled into the cracks, there is no protrusion and jumping feeling, and there is no impact on snow clearing in winter.