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首页> 美国卫生研究院文献>Polymers >Laboratory Evaluation on the Performance Degradation of Styrene-Butadiene-Styrene-Modified Asphalt Mixture Reinforced with Basalt Fiber under Freeze–Thaw Cycles
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Laboratory Evaluation on the Performance Degradation of Styrene-Butadiene-Styrene-Modified Asphalt Mixture Reinforced with Basalt Fiber under Freeze–Thaw Cycles

机译：冻融循环下玄武岩纤维增强苯乙烯-丁二烯-苯乙烯改性沥青混合料性能退化的室内评价

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摘要

This paper aims at the freeze–thaw (F-T) cycles resistance of styrene-butadiene-styrene (SBS) modified asphalt mixture reinforced with basalt fiber in order to explore the performance evaluation and prediction of asphalt mixtures at seasonal frozen regions. Asphalt was firstly modified by the common SBS and then SBS-modified stone mastic asphalt (SMA) specimens with basalt fiber were prepared by using Superpave gyratory compaction (SGC) method. Next, asphalt mixture specimens processed by 0–21 F-T cycles were adopted for the high-temperature compression test, low-temperature splitting test and indirect tensile stiffness modulus test. Meanwhile, a three-dimensional model of F-T damage evolution of the mixtures was also established based on the reliability and damage theory. The test results showed that the loss rates of mechanical strength increased rapidly, and then gradually flattened; however, these indications changed significantly after 15–18 F-T cycles. In addition, the exponential function could reflect the variation trend of the mechanical performances with F-T cycles to a certain degree. The damage evolution and prediction model based on the reliability and damage theory can be established to analyze the internal degradation law better.
机译：本文针对玄武岩纤维增强的苯乙烯-丁二烯-苯乙烯（SBS）改性沥青混合料的冻融（F-T）循环阻力，以探讨季节性冻土地区沥青混合料的性能评估和预测。首先用普通的SBS对沥青进行改性，然后采用Superpave回旋压实法（SGC）制备了SBS改性的玄武岩纤维石乳胶沥青标本。接下来，将经过0-21次F-T循环处理的沥青混合料试样用于高温压缩试验，低温劈裂试验和间接拉伸刚度模量试验。同时，基于可靠性和损伤理论，建立了混合物F-T损伤演化的三维模型。试验结果表明，机械强度的损失率迅速升高，然后逐渐趋于平缓。但是，这些指示在15–18个F-T周期后发生了显着变化。另外，指数函数可以在一定程度上反映机械性能随F-T循环的变化趋势。可以建立基于可靠性和损伤理论的损伤演化与预测模型，以更好地分析内部退化规律。

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