Fiber Reinforced Plastics/Composites ›› 2019, Vol. 0 ›› Issue (9): 14-19.

• BASIC STUDY • Previous Articles     Next Articles

EFFECT OF BASALT FIBER PARAMETERS ON ASPHALT MIXTURE BASED ON SPATIAL DISTRIBUTION MODEL

YANG Cheng-cheng1, LIU Zhao-hui1, LIU Li1,2*, LI Sheng1   

  1. 1.School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China;
    2.State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, China
  • Received:2019-05-09 Online:2019-09-28 Published:2019-09-28

Abstract: Aiming at the spatial distribution of basalt fibers in asphalt mixtures, the distribution model of basalt fibers in asphalt mixtures was established by using MATLAB, AutoCAD and ABAQUS. The effects of different spatial distribution of basalt fibers on the performance of asphalt mixtures were studied. Based on the spatial random distribution model, the effects of different fiber content and aspect ratio on the flexural-tensile properties of asphalt mixtures were analyzed. The results show that with the increase of fiber content and fiber aspect ratio, the maximum flexural stress of asphalt mixture layer bottom tends to decrease, that is, the better flexural-tensile performance of asphalt mixture. Considering the economy and actual construction conditions, the best effect of fiber reinforcement is obtained when fiber content is 0.3% and fiber aspect ratio is 35 (fiber length is 6 mm). The research results can provide a reference for the selection of reasonable basalt fiber content and aspect ratio in asphalt mixture.

Key words: road engineering, asphalt mixture, basalt fiber, flexural-tensile performance, numerical simulation

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