Ultrathin rubber asphalt wearing layer mixing material for preventive conservation

Abstract

The invention relates to an ultrathin rubber asphalt wearing layer mixing material for preventive conservation, and belongs to the technical field of the manufacturing of road asphalt pavement materials. The mixture is prepared by blending the following components of a rubber asphalt binder and aggregates in a weight ratio of (6-7):100, wherein the rubber asphalt binder consists of rubber powder and asphalt serving as a matrix in a weight ratio of (15-25):100; and the aggregates are prepared from 5 to 10 millimeters of basalt coarse aggregates, fine aggregates and mineral fillings in a weight ratio of (70-80):(15-25):(5-10). The ultrathin rubber asphalt wearing layer mixing material has the characteristics of the skid resistance and abrasion resistance of ultrathin wearing layers made of other materials, can be used for the preventive conservation of high-grade road surfaces and ultrathin wearing layer materials for the corrective conservation of slight breakage, and also has the high road performance, mechanical property and durability, so that the possibility that the ultrathin rubber asphalt wearing layer mixing material is used as a road surface structural layer is ensured.

Description

Technical field [0001] The invention is a material for the preventive maintenance of asphalt pavement, especially the preventive maintenance of high-grade asphalt or cement pavement and the corrective maintenance of minor diseases. It can be used as a pavement structure layer and belongs to the manufacture of road asphalt pavement materials. Technical field. Background technique [0002] The so-called pavement preventive maintenance is to find signs of minor damage and disease in time through regular road condition investigations, analyze and study the causes, and adopt protective maintenance measures to prevent the further expansion of minor diseases, reduce the attenuation rate of road performance, and keep the road in good condition. In order to save maintenance costs, they postpone expensive overhaul and reconstruction projects. The scientific road maintenance countermeasures should be "preventive maintenance as the mainstay, supplemented by restorative maintenance". Accordi...

AI Technical Summary

Problems solved by technology

[0016] To sum up, due to the thin pavement thickness, although the existing ultra-thin wear layer can better play anti-skid and anti-wear functions, it basically has no bearing capacity, so it is mostly used for old road overlays , the functional layer of various new roads, and the surface layer of low-traffic and low-cost roads, which are susceptible to spalling and reflective cracks

And because the ultra-thin wear layer is only used as a material to improve the function of the road surface, its road performance is basically not paid attention to, resulting in poor road performance and poor durability

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