Asphalt composition capable of enhancing workability

Abstract

The invention relates to a composite modified asphalt capable of improving workability, which comprises asphalt, EVA, polypropylene wax, polyethylene wax and petroleum resin, wherein the content of EVA is 1-10 wt% of asphalt, the content of polypropylene wax is 1-5 wt% of the asphalt, the content of polyethylene wax is 0.5-6 wt% of the asphalt, the content of petroleum resin is 530 wt% of the asphalt. Compared with the conventional modifying methods, the invention can achieve better high temperature and low temperature property of the asphalt material, improved workability, stabilized storage, and simplified manufacturing techniques. because of the admission of petroleum resin, the adhesiveness with stone-like materials is increased. Because of the admission of petroleum resin, the adhesiveness of the asphalt is also increased substantially.

Description

technical field [0001] The invention relates to the technical field of composite modified asphalt with enhanced construction performance. Background technique [0002] Adding polymers to asphalt has been used to enhance the performance of asphalt for decades. US patent US5002987 reports the use of styrene-butadiene rubber to enhance the performance of asphalt, but styrene-butadiene rubber mainly enhances the low-temperature performance of asphalt, and the enhancement of high-temperature performance is not obvious . Chinese patent CN1287133A discloses the method of adopting SBR and SBS composite modified asphalt, but the shortcoming of this method is that because of adopting SBS, its processing equipment needs colloid mill, and the production process is more complicated, simultaneously because added sulfur wherein, in production During the process, toxic hydrogen sulfide gas will be produced, which will pollute the environment. Adding EVA to asphalt to enhance the high temp...

AI Technical Summary

Problems solved by technology

[0002] Adding polymers to asphalt has been used to enhance the performance of asphalt for decades. US patent US5002987 reports the use of styrene-butadiene rubber to enhance the performance of asphalt, but styrene-butadiene rubber mainly enhances the low-temperature performance of asphalt, and the enhancement of high-temperature performance is not obvious

Chinese patent CN1287133A discloses the method of adopting SBR and SBS composite modified asphalt, but the shortcoming of this method is that be