Novel nano ultrathin maintenance and new-keeping spray layer and construction technology thereof

Abstract

The invention relates to the technical field of asphalt pavement prevention and maintenance, in particular to a novel nano ultrathin maintenance and new-keeping spray layer and a construction technology thereof. A spray layer structure is arranged on the surface of an asphalt pavement to form a maintenance and new-keeping film layer and mainly comprises a bottom maintenance layer, a middle new-keeping layer and an upper new-keeping layer sequentially arranged from the bottom surface to the top surface, wherein the bottom maintenance layer is a nano self-cleaning micro repair layer, and the middle and upper new-keeping layers are double-layer protection layers; the bottom maintenance layer mainly comprises components as follows: a penetrant, a reducing agent, a nano ceramic material, SBS modified emulsified asphalt and water; the middle and upper new-keeping layers mainly comprise components as follows: a curing agent, a nano ceramic material, cement, SBS modified emulsified asphalt andwater; the spray layer structure forms an ultrathin film layer structure through a three-layer structure, the bottom maintenance layer can repair tiny cracks of the pavement and form the anti-skid and anti-peeling nano self-cleaning micro repair film layer on the pavement, the middle and upper new-keeping layers realize dual protection on the bottom maintenance layer, and the durability and repair performance of the film layer are further consolidated.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement preventive maintenance, in particular to a novel nanometer ultra-thin maintenance and fresh spray layer and its construction technology. Background technique [0002] Early experience has taught that after several years of asphalt pavement construction and use under normal driving conditions, the pavement will begin to show minor fatigue cracks, loss of fine aggregate, and water seepage even without severe damage to the pavement The road performance also increases with the cracking of the pavement, and the pavement water will enter the asphalt mixture through the cracks or the damaged / exposed parts of the fine aggregate. The double impact further accelerates the damage of the pavement. It can be driven normally during this period, but if the best remedial period is missed, it will lead to more serious road surface damage such as mesh cracks, cracks, and potholes. [0003] In order to sol...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the fog seal technology is the most cost-effective and the most effective measure for early preventive maintenance in the preventive maintenance of asphalt pavement, and it has also been widely used. Both the fog seal and the sand-containing fog seal have two great defects. On the one hand, the materials used have poor adhesion, which makes it easy to fall off after laying on the asphalt pavement; on the other hand, the structure of the original pavement The depth is reduced, that is, the friction force is reduced, and there is a greater safety hazard

Images