Experimental Research on Road Performance of Natural Asphalt Modified Asphalt Mixtures

Abstract

This report mainly evaluated the pavement performance of natural asphalt from Albania. Firstly, base asphalts were processed with natural asphalt by “wet method” modification technique to obtain modified asphalt; and mixture are produced with these modified asphalt binders, and then high temperature performance and moisture stability properties are evaluated by some standard methods. Analysis shows that this natural asphalt can remarkably improve the high temperature and moisture stabilities of asphalt mixture, and own cost-effective advantage.

Optimization of the dosage of chopped basalt fibers in asphalt pavement surface course materials for semi-rigid base with functional requirements

“…At this level, the network structure of basalt fibers enhances the integrity of asphalt mixtures and effectively retards the expansion of microcracks [ 25 , 26 ]. To investigate the role of basalt fibers in enhancing the road performance of asphalt mixtures, it was found that the optimal dosage of basalt fibers was 0.3%, and the optimal asphalt dosage was 4.63% [ 27 ]. After adding 0.3% basalt fibers to asphalt mixtures, the dynamic stability and maximum destructive strain of the asphalt mixtures improved, leading to optimal overall road performance [ 28 ].…”