氯盐对橡胶沥青及橡胶沥青混合料低温性能的影响  

Effects of Salt the Low Temperature Performance of Rubber Asphalt and Rubber Asphalt Mixture

作　　者：齐秀廷[1] 

机构地区：[1]山西交通职业技术学院,山西太原030031

出　　处：《公路工程》2016年第6期117-120,共4页Highway Engineering

基　　金：交通土建工程材料国家地方联合工程实验室开放基金资助项目(LHSYS-2012-006)

摘　　要：将橡胶沥青和70号道路石油沥青试样经过不同氯盐条件的处理，通过延度、弯曲梁流变试验、低温弯曲小梁试验分析评价氯盐对橡胶沥青和70^#道路石油沥青结合料及其混合料低温抗裂性能的影响。结果表明：盐分使橡胶沥青和70道路石油沥青的延度降低，使劲度模量S值呈现增大的趋势，表明两种沥青结合料的低温抗裂性能随着盐分浓度和浸泡时间的增加而变差，并且在3％左右盐分浓度时低温性能表现最差。2种沥青混合料的低温抗裂性能，随着浸泡盐分浓度和浸泡时间的增加而逐渐变差。橡胶沥青混合料抵抗盐分影响能力明显优于70^#道路石油沥青混合料。The rubber asphalt and raw asphalt was treated by different conditions of salinity, rubber asphalt and raw asphalt and their low-temperature performance were characterized and compared through laboratory testing. The test results indicated that salt makes the rubber asphalt and raw asphalt＇ s ductility decrease,stiffness modulus S value increased, showed that two kinds of asphalt＇ s low-temperature anti cracking performance decreased, and their low temperature performance is the worst in about 3% salt concentration. With the increase of salt concentration and soaking time, the low temperature anti cracking performance of two kinds of asphalt mixture become worse gradually, and rubber asphalt mixture was obvi- ously better to resistance to salt effect than raw asphalt mixture.

关 键 词：路面材料 盐分 橡胶沥青 低温性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]