Road repair self-adhesive sealing tape

Abstract

The invention relates to preparation of a road repair self-adhesive sealing strip. The sealing strip is prepared from a matrix asphalt, softening oil, natural asphalt, a SBS modifier, regenerated rubber powder, polyester fiber, a filler and barrier paper. The prepared road repair self-adhesive sealing strip can be used to repair fine cracks with width of less than 1 cm without slotting. After simple clearing of seams, construction can be started. After construction, roads can be opened to traffic. The sealing strip and a crack area form a tight union body, thus effectively preventing loosening, edge-breaking, seam-breaking, pothole and the like of the crack area. The prepared road repair self-adhesive sealing strip has advantages of high bonding capability, good elasticity, tensile modulus, water insolubility, watertightness, non-flowing at high temperature, no brittle failure at low temperature, simple construction, short construction period, firm construction performance and long retention time, and provides safe, rapid and reliable protection for road maintenance.

Description

technical field [0001] The invention relates to a self-adhesive sealing tape for road repair in the field of asphalt road maintenance. Background technique [0002] According to the data released by the Ministry of Transport, as of the end of December 2013, the mileage of my country's highways has reached about 4.2375 million kilometers, of which more than 90% use asphalt concrete pavement. In recent years, with the increase in traffic volume, the increase in the proportion of axle loads and heavy vehicles, and the harsh environmental conditions, the asphalt pavement has become loose, cracked, pitted, and damaged during long-term use. Cracks and other diseases. Once these diseases, especially cracks, will cause a series of major harm to the road surface, firstly, it will affect the driving comfort and the appearance of the road surface, and even endanger the driving safety. Secondly, water will easily seep into the road surface and even reach the top surface of the base. U...

AI Technical Summary

Problems solved by technology

Once these diseases, especially cracks, will cause a series of major harm to the road surface, firstly, it will affect the driving comfort and the appearance of the road surface, and even endanger the driving safety. Secondly, water will easily seep into the road surface and even reach the top surface of the base. Under the action, there will be scour, mud pumping and slurry pumping, which will reduce the bearing capacity of the pavement structure. At the same time, it will also change the design stress mode of the pavement, accelerate the overall destruction of the pavement, reduce the performance of the pavement, and shorten the service life of the pavement; in order to solve the above problems, Many road repair materials have been invented at home and abroad, including emulsified asphalt, joint glue and sealing tape, etc. Among them, emulsified asphalt has a long construction and maintenance time, short service life, and is easy to crack again. Construction, can withstand a long period of aging, and has a significant effect in repairing large cracks, but artificially expanding the cracks changes the force of the wheels on the road surface and accelerates the destruction of the road surface, so it is not recommended to use this when the cracks are small The sealing tape needs hot-melt construction, and the construction speed is slow. The aging performance of the coating and covering material is reduced due to hot-melt construction, and it is easy to be damaged quickly. The base layer is clean and can be directly bonded. Due to the good low temperature performance, it can withstand a long time. However, most of the self-adhesive sealing tapes on the market have poor bonding performance and are easily picked up by the wheels when vehicles pass by. , loses the meaning of repair, and in addition, the coating material is squeezed and deformed due to insufficient strength during use, exposing the edge of the crack, resulting in repair failure, so a preparation with high bonding performance, high elasticity, not easy to deform, and good aging performance Road self-adhesive sealing tape is imperative

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