Preparation method of high-temperature-resistant asphalt concrete

Abstract

The invention discloses a preparation method of high-temperature-resistant asphalt concrete. The preparation method comprises the following steps: 1. pouring matrix asphalt into a reactor, heating thereactor to 300-320DEG C, then adding perfluoroelastomer rubber, hydrogenated acrylonitrile butadiene rubber, boron-silicon rubber, gum-based ester rubber and SBS thermoplastic elastomer, and stirringand reacting; 2. cooling the interior of the reactor to 200-220DEG C, adding furfural, asbestos powder, zinc oxide, silicon nitride, chromium carbide, aluminum-plated glass beads, calcium sulphate whisker powder and chlorinated paraffin, and stirring and reacting; 3. pouring the mixture, obtained in the step 2, into an ultrasonic dispersing machine, then adding composite resin, xylene, zinc naphthenate, Barium petroleum sulfonate, kerosene, lauroyl diethanolamine and promoter, and performing ultrasonic dispersion; and 4. shearing and dispersing the mixture, obtained in the step 3, stopping and then stirring for 30-50minutes at 150-160DEG C to obtain the high-temperature-resistant asphalt concrete.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a preparation method of high-temperature-resistant asphalt concrete. Background technique [0002] Since the discovery of the advantages of asphalt pavement in dustproof, anti-vibration, anti-skid, noise reduction and durability, asphalt concrete pavement has been widely used all over the world, especially in my country, the paved area of ​​asphalt pavement has entered the top three in the world bit. [0003] With the development of large-scale road construction, the demand for road construction materials is increasing day by day, especially the supply and quality of asphalt materials, which has become the lifeblood restricting the development of high-grade roads. [0004] Ordinary asphalt can no longer meet the needs of high-grade heavy-duty pavements. Under high temperature and high pressure stress environments, the rigidity, elasticity, toughness, and deformation com...

AI Technical Summary

Problems solved by technology

[0004] Ordinary asphalt can no longer meet the needs of high-grade heavy-duty pavements. Under high temperature and high pressure stress environments, the rigidity, elasticity, toughness, and deformation compliance of ordinary asphalt pavements are significantly insufficient. The dynamic viscosity of ordinary asphalt mixture at 60 ° C Smaller, prone to rutting under high pressure, prone to shifting and hugging under the action of interface shear stress, under the action of temperature difference, the deformation of the steel plate is large, and the deformation compliance of the mixture is poor and prone to cracking, resistance to temperature fatigue and Poor load fatigue performance is prone to problems such as cracking and falling off

Images