Modified emulsified asphalt concrete

Abstract

The invention provides modified emulsified asphalt concrete, and belongs to the technical field of road pavement construction. The modified emulsified asphalt concrete comprises the following components in percentage by mass: 4%-5% of asphalt, 5%-7% of slag powder, 40%-50% of fine aggregate, 40%-50% of coarse aggregate and 0.2%-0.8% of an anti-stripping agent, the asphalt is SBRII-A type modified asphalt, the fine aggregate is 0-4.75 mm machine-made sand, the coarse aggregate is 4.75-9.5 mm broken stone and 9.5-16 mm broken stone, and the doping amount of the 4.75-9.5 mm broken stone is higher than that of the 9.5-16 mm broken stone. The HY-1 type anti-stripping agent is added into the modified emulsified asphalt concrete, so that the adhesive force between asphalt and aggregate can be increased, the water damage resistance and thermal aging resistance of the asphalt concrete are improved, the possibility of forming oil flooding and pitted surfaces on a pavement is reduced, and the service life of the pavement is prolonged; by using the SBRII-A type modified asphalt, the influence of plateau day and night temperature difference on the asphalt pavement can be reduced, the low-temperature cracking resistance and the high-temperature rutting resistance are improved, and shrinkage cracks formed on the asphalt pavement are reduced or avoided.

Description

technical field [0001] The invention belongs to the technical field of road pavement construction, in particular to a modified emulsified asphalt concrete. Background technique [0002] Asphalt concrete is widely used in construction project pavement engineering, which has the advantages of smooth surface, no joints, comfortable driving, low vibration, low noise, wear resistance, no dust, easy cleaning, short construction period, easy maintenance and recyclable utilization, etc. . Due to the harsh environmental conditions such as large temperature difference between day and night, extremely strong ultraviolet rays, high and concentrated precipitation, mixed rain and snow, and hail in the plateau area, a series of diseases such as oily, pockmarked surfaces, and shrinkage cracks are prone to occur. When the road surface is irradiated by the sun at noon, the high temperature will cause the free asphalt on the road surface to expand and move up due to heat, causing the hazard o...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a modified emulsified asphalt concrete. The modified emulsified asphalt concrete of the present invention can have a more durable road surface for the harsh environment in plateau areas, and effectively solve the problem of oily, pockmarked, and shrinkage cracks on the asphalt pavement. And other issues