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Open AccessArticle

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

College of Transportation, Jilin University, Changchun 130025, China
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Sustainability 2019, 11(20), 5754; https://doi.org/10.3390/su11205754
Received: 10 September 2019 / Revised: 8 October 2019 / Accepted: 16 October 2019 / Published: 17 October 2019
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. View Full-Text
Keywords: eco-friendly pavement; porous asphalt mixture; pavement performance; design optimization; response surface method eco-friendly pavement; porous asphalt mixture; pavement performance; design optimization; response surface method
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MDPI and ACS Style

Cheng, Y.; Chai, C.; Zhang, Y.; Chen, Y.; Zhu, B. A New Eco-Friendly Porous Asphalt Mixture Modified by Crumb Rubber and Basalt Fiber. Sustainability 2019, 11, 5754.

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