Warm mix type high modulus asphalt mixture additive and preparation method thereof

Abstract

The invention discloses a warm mix type high modulus asphalt mixture additive and a preparation method thereof. The warm mix type high modulus asphalt mixture additive comprises the following raw materials in parts by weight: 15-35 parts of polymer organic wax, 25-40 parts of thermoplastic elastomer polymer, 10-20 parts of waste rubber powder, 5-10 parts of coupling agent, 5-10 parts of inorganicfiller, 5-15 parts of anti-aging agent and 10-35 parts of pitch-based material. Through the specific proportioning and processing technology of the invention, the additive obtained after compounding can reduce the production temperature of the mixture, improve the high-temperature rutting resistance of the asphalt mixture, and improve the low-temperature performance and water stability of the asphalt mixture to a certain extent. Compared with the imported rutting resistance agents on the market, the additive has low production cost and good application prospects.

Description

technical field [0001] The invention relates to an asphalt mixture additive and a preparation method thereof, in particular to a warm-mix high-modulus asphalt mixture additive which improves the anti-rutting performance of the road surface and can reduce the mixing temperature of the mixture and the preparation method thereof. Background technique [0002] In recent years, the rapid development of the national economy has greatly improved people's lives and production methods, but at the same time it has also brought great challenges to the transportation industry, such as the rapid increase in traffic volume, serious overloading, increasing vehicle axle loads and The increasingly severe external climate and environment not only greatly reduce the service life of the built expressways, but also make the new roads appear earlier with diseases, such as ruts, water damage, cracks, etc. These diseases not only seriously affect the road surface Driving comfort, and the occurrence...

AI Technical Summary

Problems solved by technology

At present, the high-modulus anti-rutting agent products with better performance on the market are expensive, mostly around 20,000 yuan

The high price limits its large-scale promotion and application

[0004] In order to reduce production costs and promote the popularization and application of anti-rutting agent products in engineering, researchers often use waste or recycled polyolefins and other materials such as rubber powder to compound anti-rutting agents for asphalt mixtures, such as Chinese patents CN102964525A, CN101451016A, CN101805470A and CN103897411A all disclose the composition of anti-rutting additives, but there are some defects, such as poor compatibility and uniform dispersion between modifiers, mineral materials or asphalt, poor improvement effect at high temperature, or Although the high temperature performance has been greatly improved, it has weakened the low temperature performance and water stability of the asphalt mixture to a certain extent.

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