摘要
本文通过针入度、软化点、黏度、动态剪切流变和延度等试验方法分析改性沥青胶浆高温和低温性能,并对动态剪切流变试验数据进行双因素方差分析,研究不同目数和掺量的废旧橡胶粉改性沥青胶浆力学性能。结果表明:废旧橡胶粉沥青与基质沥青相比,针入度降低了35.3%,软化点增加了14.9%,延度增大,车辙因子明显增加,故加入废旧橡胶粉,提高沥青的高温抗车辙性能力和低温抗裂性,通过方差分析得出橡胶粉显著改善基质沥青的性能。
The mechanical properties of rubber powder modified asphalt with different mesh size and content were studied.High temperature and low temperature properties were analyzed by penetration test,softening point test,ductility test,viscosity test and dynamic shear rheology test,and variance analysis was conducted for dynamic shear rheology test data.The results show that the penetration of rubber powder modified asphalt decreased by 35.3%,the softening point increased by 14.9%,the ductility increased and the rutting factor increased significantly compared with the base asphalt.The addition of rubber powder can improve the rutting resistance.Variance analysis show that rubber powder significantly improveds the performance of base asphalt.
作者
朱春凤
罗辉金
刘浩
张树帅
朱春莲
ZHU Chun-feng;LUO Hui-jin;LIU Hao;ZHANG Shu-shuai;ZHU Chun-lian(School of civil engineering,Jilin Jianzhu university,Changchun 130118,China;Jilin province expressway group experimental testing Co.,Ltd.,Changchun 130022,China;Jilin delong technology and environmental protection Co.,Ltd.,Changchun 130300,China)
出处
《吉林建筑大学学报》
CAS
2024年第5期7-13,共7页
Journal of Jilin Jianzhu University
基金
吉林省科技厅重点项目(20220203159SF).
关键词
废旧橡胶粉沥青
方差分析
动态剪切流变试验
力学性能
rubber powder modified asphalt
variance of analysis
dynamic shear rheology test
mechanical properties
