A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber

Yongchun Cheng, Chao Chai, Yuwei Zhang, Yu Chen and Bing Zhu
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Yongchun Cheng: College of Transportation, Jilin University, Changchun 130025, China
Chao Chai: College of Transportation, Jilin University, Changchun 130025, China
Yuwei Zhang: College of Transportation, Jilin University, Changchun 130025, China
Yu Chen: College of Transportation, Jilin University, Changchun 130025, China
Bing Zhu: College of Transportation, Jilin University, Changchun 130025, China

Sustainability, 2019, vol. 11, issue 20, 1-21

Abstract: In this paper, the performance of environmentally friendly porous asphalt mixture was optimized by the response surface method. Taking the asphalt-aggregate ratio, crumb-rubber content, and basalt fiber content as the independent variables, the air void, Marshall stability, flow value, Marshall quotient, and Cantabro particle loss are the response values. The best model was determined by fitting the experimental data. After the influence of the independent variables on the response values was clarified, the models were used to optimize the dosage of the asphalt, crumb rubber, and basalt fiber through comprehensive analysis. The results showed that the application of the response surface method can complete the establishment of the models and the optimization of the performance of the porous asphalt mixture with sufficient accuracy. The optimum dosage of the asphalt to aggregate ratio, crumb rubber, and basalt fiber is 4.51%, 11.21%, and 0.42%, respectively. The high-temperature stability, low-temperature crack resistance, water stability, and Cantabro particle loss resistance of the optimized porous asphalt mixture were effectively improved, which provides a reference for the construction of eco-friendly pavement.

Keywords: eco-friendly pavement; porous asphalt mixture; pavement performance; design optimization; response surface method (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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