Anti-Cracking Performance of Basalt Warp Knitted Fiber Cloth Based on Reflection Crack Prevention

Abstract

Abstract: Reflective crack is the main reason for reducing the service life of semi-rigid base asphalt pavement, and laying geosynthetics is one of the effective ways to reduce reflective crack. To take optimum measures of reflective resistance, aimed at the problem of slight reflection crack in asphalt pavement surface, the anti-cracking performance of basalt warp knitted fiber cloth was studied. Through impact ductility test and dynamic fatigue test, the reflective resistance performances of basalt warp knitted fiber cloth and control geosynthetics (fiberglass grating and fiberglass-polyester paving mat) were analyzed. Finally, the correlation between impact ductility and fatigue properties of asphalt mixture after paving different geosynthetics was analyzed. The results show that the impact ductility of asphalt mixture is improved by more than 70% when basalt warp knitted fiber cloth is overlaying. Basalt warp knitted fiber cloth is superior to fiberglass grating and fiberglass-polyester paving mat in preventing crack generation and delaying crack propagation, and laying basalt warp knitted fiber cloth in asphalt mixture obtains the best fatigue properties. After paving geosynthetics, the impact ductility of asphalt mixture has a good correlation with its fatigue life, and it is feasible to use impact ductility to predict the fatigue properties of asphalt mixture after paving geosynthetics.

Key words: basalt warp knitted fiber cloth, slight reflection crack, asphalt pavement surface, impact ductility, crack dynamic development process, correlation

CLC Number:

U414

SHEN Aiqin, LONG Hongjun, GUO Yinchuan, LI Peng, ZHAI Chaowei. Anti-Cracking Performance of Basalt Warp Knitted Fiber Cloth Based on Reflection Crack Prevention[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(12): 4151-4157.

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