A warm-mixed asphalt thin-layer overlay structure of waste cement concrete recycled aggregate and its construction method

Abstract

The invention provides a warm-mixed asphalt thin-layer overlay structure of waste cement concrete recycled aggregates, which sequentially includes a warm-mixed rubber asphalt bonding layer (2) on the original pavement structure (1) and waste cement concrete Recycled aggregate warm mix asphalt thin layer overlay (3). The present invention has the following beneficial effects: the present invention combines waste cement concrete recycled aggregates with foamed asphalt warm mixing technology, two major road environmental protection technologies, which makes up for the possible decline in the road performance of asphalt mixture caused by the simple use of asphalt warm mixing technology, making It can not only reduce construction waste pollution, save natural aggregate resources, but also reduce energy consumption and waste gas during the production and paving of hot asphalt mixtures when the road performance index of hot mix asphalt mixture is not lower than that of hot mix asphalt mixture. At the same time, it achieves the dual environmental protection goals of resource utilization of construction waste and energy saving and emission reduction. In addition, the invention can also solve the problem that the thin-layer overlay hot-mix asphalt mixture is easy to cool and thus fails to meet the compaction requirement.

Description

technical field [0001] The invention relates to a pavement thin-layer overlay structure, in particular to a warm-mixed asphalt thin-layer overlay structure of waste cement concrete recycled aggregates and a construction method thereof. Background technique [0002] With the continuous expansion of my country's urban construction scale, the annual production of construction waste is increasing at a rate of 8%. In my country, the resource utilization capacity of construction waste is very low, and the national average comprehensive utilization rate is less than 5%, which is far lower than that of Europe, America and Japan. and other developed countries. Most of the construction waste is untreated, and it is directly transported to the suburbs or villages for disposal by open-air stacking or landfilling, which requires a lot of construction costs such as land acquisition fees, garbage removal and transportation fees, and disposal fees; at the same time, the removal and stacking ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and at the same time solve the pollution of the environment caused by waste cement concrete and hot-mix asphalt mixture exhaust gas, waste of natural aggregate resources, large energy consumption of hot-mix asphalt mixture, and warm mixing of natural aggregates. The pavement performance of asphalt mixture has declined, and the construction temperature of hot-mix asphalt thin-layer overlay has dropped rapidly, resulting in substandard compaction and other problems.

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