Composite modified asphalt based on multi-component biomass material, and preparation method thereof

Abstract

The invention discloses a composite modified asphalt based on a multi-component biomass material, and a preparation method thereof, wherein the raw materials comprise, by mass, 100 parts of matrix asphalt, 2.5-5 parts of hogwash oil, 10-20 parts of waste rubber powder, 2-4 parts of soybean fatty acid, 1-3 parts of yak manure, 2-4 parts of coffee residue, 1-3 parts of boron nitride, 0.5-1.5 parts of 2-hydroxy-4-methoxybenzophenone, and 0.1-0.15 part of a stabilizer. According to the present invention, the low temperature ductility and the softening point of the modified asphalt produced through the raw materials, the matching ratio and the process are significantly improved, wherein the softening point can be increased by more than 10 DEG C, the 5 DEG C ductility can be improved by more than 80 mm, the needle penetration index is not substantially affected, and the industry standard requirements are met; and the preparation process is simple, the doping amount of the modifier is high, and the produced modified asphalt pavement material can partially replace the petroleum asphalt for road engineering, and can alleviate the consumption of the non-renewable petroleum asphalt to a certain extent.

Description

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AI Technical Summary

Benefits of technology

This patented technical solution describes an improvement on existing methods that use recycled carpet scrap (CRS), such as ground coverings obtained through mills). These techniques aimed at reducing environmental concerns associated with disposal processes while maintaining their benefits over time. Additionally, adding vegetables containing fats called linseed acids into these compositions resulted in better heat retention characteristics compared to traditional plaster fillers like calcium sulfide and bent clay. Overall, this new approach provides various advantages including reduced odor emissions, enhanced flexibility, long lifespan, less fuel leakage, longer period between maintenance periods, prevention against freezing damage, and reduction of carbon dioxide emission when combined with paving stones.

Problems solved by technology

Technological Problem: Current methods involve modifying asphelted bituminous material (bitumen) by adding various chemical agents like sulfuric acid or naphthalenesulfonate before curing them under specific conditions such as heat treatment or mixing water together. However, these techniques result in increased cost due to extra steps needed after manufacturing. Additionally, current modification processes may also lead to decreased efficiency and stability over time, leading to poor results when applied to larger areas.

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