橡胶沥青混合料低温抗裂性能评价

Study on Low Temperature Crack Resistance Performance of Asphalt-rubber Mixture

为评价橡胶沥青混合料AR-OSMA-13与SBS-SMA-13混合料的低温性能,采用低温弯曲试验,以破坏强度、破坏应变与劲度模量作为评价指标进行低温性能对比分析。通过室内试验结果得出:与SBS-SMA-13混合料相比,橡胶沥青混合料有较低的脆化点温度、较大的低温应变及劲度模量,呈现出很好的低温抗裂性能。橡胶沥青混合料拥有出众的低温路用性能,完全能够应用于高等级公路建设中。

To analyze the low temperature performance of AR-OSMA-13 and SBS-SMA-13, choosing the low temperature bending test with failure strength, failure stain and stiffness modulus to make comparative analysis. The results show that： asphalt-rubber mixture possesses the better brittle point temperature, low temperature stain and stiffness modulus, so it has excellent low temperature performance and can be used in high-grade highway construction.