MMT/硫粉复合改性沥青混合料水稳定性能研究  

Research on water stability of MMT/sulfur modified asphalt mixture

作　　者：王蒙 Wang Meng(Shandong Luqiao Group Co.,Ltd.,Jinan 250000,China)

机构地区：[1]山东省路桥集团有限公司,山东济南250000

出　　处：《山西建筑》2021年第4期86-88,共3页Shanxi Architecture

摘　　要：为了改善沥青的性能以及混合料的水稳定性能,采用蒙脱土(MMT)和硫粉复合改性的方式,对不同掺量的改性沥青的高温,低温、温度敏感性和弹性恢复等性能进行测试,确定改性剂的最佳掺量,并对沥青混合料的水稳定性能进行测试分析。结果表明:蒙脱土的纳米片层在沥青结合料中与硫粉形成的插层结构,有效地提高了沥青的高低温性能和弹性恢复能力,降低了温度敏感性。并且证明了最佳掺量的复合改性沥青可以提高沥青混合料的水稳定性。In order to improve the properties of asphalt and the water stability of the mixture,montmorillonite(MMT)and sulfur powder were used to modify the modified asphalt with different content,and the properties of high temperature,low temperature,temperature sensitivity and elastic recovery were tested.The optimum amount of modifier was determined,and the water stability of asphalt mixture was tested and analyzed.The results show that the intercalation structure formed by the nanosheet layer of montmorillonite and sulfur powder in the asphalt binder can effectively improve the high and low temperature performance and elastic recovery ability of the asphalt,and reduce the temperature sensitivity.And it is proved that the water stability of asphalt mixture can be improved by the compound modified asphalt with the best content.

关 键 词：改性沥青 沥青混合料 蒙脱土(MMT) 硫粉 水稳定性 

分 类 号：TU502[建筑科学—建筑技术科学]