透水性沥青混合料水稳定性能试验研究

Experimental Study on Moisture Susceptibility of Permeable Asphalt Mixtures

为研究透水性沥青混合料的水稳定性能,采用短期老化试验及冻融劈裂试验对透水性沥青混合料水稳定性能进行了研究。通过对比试验结果分析得出TPS改性剂对沥青混合料水稳定性能起到很好的改善作用。透水性沥青混合料劈裂强度随TPS改性剂的掺量增加而增加,混合料的短期老化过程可以增强试件的抗变形能力。最后得出了透水性沥青混合料中TPS的合适掺量及冻融劈裂抗拉强度比。

In order to study the moisture susceptibility of permeable asphatt mixtures, we ~av~ it by conducting the short - term aging test and freeze - thaw splitting test. Comparing the test results, we analyzed that TPS modifiers have good effects on the moisture susceptibility of permeable asphalt mixtures. Splitting strength of permeable asphalt mixtures increase with the dosage of TPS modifier and the short - term aging process can enhance the deformation resistance of the specimen. At last, we conclude TPSg the appropriate dosage and tensile strength ratio of freeze - thaw splitting in the permeable asphalt mixtures.