Comprehensive Study about Effect of Basalt Fiber, Gradation, Nominal Maximum Aggregate Size and Asphalt on the Anti-Cracking Ability of Asphalt Mixtures

There are many parameters that could affect the properties of asphalt mixtures, such as fiber additive, gradation type, nominal maximum aggregate size (NMAS), and asphalt. To evaluate influence these factors on crack resistance mixture, 10 different types mixtures were prepared. The indirect tensile cracking test (IDEAL-CT) semi-circle bending (SCB) adopted to anti-cracking ability samples. two results also used conduct correlation analysis find between parameters, scanning electron microscope (SEM) was analyze micro cracks mixture. showed basalt further enhance Stone matrix (SMA) better performance than Superpave (SUP) mixtures. increase in decrease Styrene-Butadiene-Styrene (SBS) modified reinforce pure CTindex IDEAL-CT Flexibility index (FI) value SCB correlation. This paper has certain significance guiding design having good resistance.