抗车辙剂与SBS改性剂对SMA-13沥青混合料路用性能的影响

Impact of Anti-rutting Additive and SBS Modifier on Road Performance of SMA-13 Asphalt Mixture

以SMA-13沥青混合料为研究对象通过车辙试验、弯曲试验、劈裂试验及冻融劈裂试验对抗车辙剂和SBS改性剂不同掺量的高温稳定性、低温抗裂性和水稳定性进行研究评价。试验结果表明:在SMA-13沥青混合料中添加一定量的抗车辙剂和SBS改性剂均能对其高温稳定性、低温抗裂性和水稳定性有所提高,且最佳掺量分别为0.4%和5%;同时在最佳掺量下,添加抗车辙剂的高温稳定性要优于添加SBS改性剂的高温稳定性;添加SBS改性剂的低温抗裂性和水稳定性要优于添加抗车辙剂的低温抗裂性和水稳定性。

Taking SMA-13 asphalt mixture with different content of anti-rut agent and different content of SBS modifier,the high temperature stability,low temperature stability and water stability are evaluated by rutting test,bending test,indirect tensile test and freeze-thaw splitting test.The test results show that certain amount of anti-rut agent and SBS modifier can improve the pavement performance of SMA-13 asphalt mixture,and its optimal dosages are respectively 0.4% and 5%.Simultaneously under the condition of optimal dosage,the high temperature stability of SMA-13 asphalt mixture with anti-rut agent is better than that of mixture with SBS modifier;the low temperature stability and the water stability of SMA-13 asphalt mixture with SBS modifier are better than that of mixture with anti-rut agent.