Complex fibers for asphalt concrete

Abstract

The invention provides complex fibers for asphalt concrete. The complex fibers for the asphalt concrete are formed by mixing the following raw materials in parts by weight: 37%-43% of lignin fibers, 18%-22% of polyester fibers and 39%-42% of basalt fibers. The mixing amount of the complex fibers in the asphalt concrete is 0.29%-0.31%. After the complex fibers are applied to the asphalt concrete, the pavement performances of the mixture can be obviously improved; compared with a single-fiber asphalt mixture, the complex fiber asphalt mixture has the advantages that all the pavement performances of the complex fiber asphalt mixture are more balanced, and the complex fiber asphalt mixture is higher in cost performance; compared with an SBS (Styrene Butadiene Styrene) asphalt mixture, the complex fiber asphalt mixture has the advantages that a construction technology is simpler, and the complex fiber asphalt mixture is higher in cost performance.

Description

technical field [0001] The invention belongs to the field of asphalt pavement construction and relates to a composite fiber for asphalt concrete. Background technique [0002] As a seamless and flexible pavement, asphalt pavement has the advantages of smoothness, high driving comfort, shock and noise reduction, less dust, wear resistance, beautiful appearance, short construction time, convenient maintenance and repair, and can be retrofitted and recycled in stages. However, with the rapid development of roads, the number of automobiles in our country is also increasing day by day. The continuous increase of traffic volume and axle load makes the asphalt concrete pavement appear rutting, cracking, water stability and other early damages shortly after it is opened to traffic. In order to effectively alleviate the early damage of asphalt pavement, road workers have adopted new road materials and pavement design methods: on the one hand, by improving the performance and quality ...

AI Technical Summary

Problems solved by technology

[0004] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a composite fiber for asphalt concrete, which can comprehensively improve various road performances of asphalt concrete and overcome the effect of single fiber asphalt concrete road performance improvement single disadvantage

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