Waste recycled light aggregate asphalt concrete and light paving application thereof

Abstract

The invention provides waste recycled light aggregateasphalt concrete. The asphalt concrete is prepared from the following components in percentage by mass: 45%-55% of ceramic waste recycled aggregate, 4.5%-5.5% of SBS modified asphalt, 19.5%-40.5% of building waste recycled aggregate and 10%-20% of supplementary mineral, wherein the ceramic waste recycled aggregate and the building waste recycled aggregate are prepared from ceramic waste and building waste through processes of sorting, crushing and sieving. The invention further provides an application of the waste recycled light aggregate asphalt concrete in paving of a pavement light ultrathin wearing layer, in particular to an application in tunnel pavement. The waste recycled light aggregate asphaltconcrete has the advantages that energy consumption of tunnel lighting can be effectively reduced, and the probability and frequency of tunnel traffic accidents are reduced; besides, the cost of raw materials can be reduced by recycling of the ceramic waste, and economic and social benefits are remarkable.

Description

Technical field [0001] The invention belongs to the technical field of pavement surface materials in road engineering, and in particular relates to a kind of construction waste recycled aggregate, ceramic waste recycled aggregate asphalt concrete and its application in the ultra-thin wear layer of paving tunnel road surface brightening . Background technique [0002] Highway tunnels are mostly closed and less light. Due to the inherent defects of cement pavement, asphalt pavement is generally paved in the tunnel, but the asphalt pavement will reduce the visibility of the road surface due to the black color and strong light absorption, which makes the tunnel prone to short-term visual obstacles such as "black hole phenomenon" and "glare phenomenon", which seriously affects Driving safety. [0003] In the existing tunnel light-colored paving technology and patent research, light-colored (light-colored) asphalt, cement, and aggregate are usually used, but such technologies and paten...

AI Technical Summary

Problems solved by technology

Due to the inherent defects of the cement pavement, asphalt pavement is generally laid in the tunnel, but the asphalt pavement will reduce the visibility of the road surface due to its black color and strong light absorption, resulting in short-term visual obstacles such as "black hole phenomenon" and "glare phenomenon" in the tunnel, which seriously affects the driving safety

[0003] In the existing tunnel clear pavement technology and patent research, usually use bright (light-colored) asphalt, cement, aggregate, but this kind of technology and patent construction process is complicated, and the price is relatively high Commercially available light-colored (light-colored) materials will also increase construction costs, which is not conducive to popularization and application

In the invention patent of "A Bright Coloring Functional Layer of Tunnel Asphalt Pavement Based on Bright Color Cementing Materials" with the invention publication number CN102408657A, a bright coloring function of tunnel asphalt pavement using bright color cementing materials and crushed stones is disclosed layer, has good road performance, and can also improve the light reflection ability of the road surface in the tunnel to a certain extent, has the beneficial effects of saving energy and reducing emissions, and enhancing the safety of tunnel traffic. Both come from market purchases, and there are certain deficiencies in economy

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