SBS/纳米二氧化硅复合改性沥青及其混合料疲劳性能研究  

Study on fatigue performance of SBS/N-SiO_(2) composite modified asphalt and its mixtures

作　　者：周伟 芮照诚 孙岳 王光勇 ZHOU Wei;RUI Zhaocheng;SUN Yue;WANG Guangyong(Taizhou Traffic Engineering Test and Inspection Center Co.,Lid.,Zhejiang Taizhou 318001 China;Shandong Transportation Institute,Shandong Jinan 250031China)

机构地区：[1]台州市交通工程试验检测中心股份有限公司,浙江台州318001 [2]山东省交通科学研究院,山东济南250031

出　　处：《山东交通科技》2024年第4期6-10,22,共6页

摘　　要：采用线性振幅扫描试验(LAS)和四点弯曲疲劳试验分别对SBS改性沥青、N-SiO_(2)改性沥青、SBS/N-SiO_(2)复合改性沥青及其混合料的疲劳寿命进行研究,并建立了相对应的疲劳方程。此外,还建立了沥青与沥青混合料疲劳性能的相关方程。结果表明,添加SBS/N-SiO_(2)复合材料可显著提高沥青及其混合料的疲劳寿命,且6%N-SiO_(2)+5%SBS为最佳改性组合;沥青与沥青混合料的疲劳寿命之间存在良好的线性关系。The fatigue life of SBS modified asphalt,N-SiO_(2) modified asphalt,SBS/N-SiO_(2) modified asphalt and their mixtures are investigated by using linear amplitude scanning test(LAS)and four-point bending fatigue test,respectively,and the corresponding fatigue equations are established.In addition,the correlation equations between the fatigue performance of asphalt and asphalt mixtures were also established.The results showed that the fatigue life of asphalt and its mixtures could be significantly improved by adding SBS/N-SiO_(2) composites,and 6%N-SiO_(2)+5%SBS was the best modification combination;there was a good linear relationship between the fatigue life of asphalt and asphalt mixtures.

关 键 词：道路工程 疲劳特性 复合改性 LAS 四点疲劳 

分 类 号：U414.1[交通运输工程—道路与铁道工程]