High-performance low-noise asphalt pavement conserving material and preparation method thereof

Abstract

The present invention relates to a high-performance low-noise asphalt pavement maintaining material and the preparing method thereof, the maintaining material is mainly composed of conventional micro-surfacing asphalt concrete and waste rubber powder and polymer fiber, and the content of the waste rubber powder and polymer fiber respectively accounts for the gross weight of the micro-surfacing asphalt concrete 1-5% and 0.1-0.3%. The maintaining material preparing method is mixing the waste rubber power and the polymer fiber and the dry mixture of the prescribed grading aggregate to uniform, then adding filling agent, water and modified emulsified asphalt in sequence, and mixing to uniform. The material of the invention is improved with the bonding capacity to the original asphalt pavement because of the adding of the waste rubber powder and the polymer fiber, the capacity of the micro-surfacing asphalt concrete is increased, the excellent high-temperature-resisting track and low-temperature cracking capacity is facilitated to be possessed, has the advantages of excellent water-proofing and water-resisting property, excellent noise reducing, skid resistance, abrasion-proofing, impact resistance, cracking resistance and freeze-thaw resistance; and the material of the invention has the advantages of simple preparing method, low construction cost and less environmental pollution and the like.

Description

technical field [0001] The invention relates to the field of asphalt pavement maintenance materials, in particular to a micro-surfaced asphalt concrete added with waste rubber powder and polymer fibers and a preparation method thereof. Background technique [0002] With the maturation and improvement of our country's expressway network, the maintenance of expressways will become one of the key tasks of the highway department, and the maintenance of asphalt pavement is the top priority of highway maintenance. The maintenance of the pavement should be based on preventive maintenance, supplemented by repairing maintenance, that is, maintenance should be carried out before the road surface will appear or before there is a disease or serious disease. In this form, a variety of highway maintenance technologies such as ultra-thin overlay, regeneration, crack repair, micro-surfacing, etc. emerged as the times require. [0003] Microsurfacing is the most advanced form of emulsified ...

AI Technical Summary

Problems solved by technology

[0004] However, the micro-surfacing technology is still in the trial stage in our country. While improving the performance of the road surface, it also has weaknesses, such as high driving noise, poor durability, and grain loss, which restrict the application of this technology.