摘要
基于废胎胶粉复合改性沥青胶结料和混合料性能试验,优化得到最佳的干拌废胎胶粉与SBS掺量,并铺筑干拌废胎胶粉复合SBS改性沥青混凝土路面试验段。结果表明:干拌废胎胶粉复合SBS改性沥青混合料,具有优异的高低温性能、抗剪切性能与抗疲劳性能,推荐使用2.5%SBS+15.0%、20.0%干拌废胎胶粉和3.5%SBS+10.0%、15.0%干拌废胎胶粉复配方案。试验应用中3.5%SBS+15.0%干拌废胎胶粉复合改性沥青混凝土的综合路用性能优良,具有推广应用价值。
Based on the test on the compound of dry-mixed waste rubber powder and modified asphalt cement and properties of the compound,the proportions of dry-mixed rubber powder and SBS are optimized and a pavement section of dry-mixed rubber powder and SBS modified asphalt concrete is constructed for test.The results show that the compound of dry-mixed waste rubber powder and SBS modified asphalt mixture have excellent high-and-low-temperature,shear resistance and fatigue resistance properties.The compounding schemes of 2.5%SBS+15%,20%dry-mixed waste rubber powder and 3.5%SBS+10%,15%dry-mixed waste rubber powder are recommended.The comprehensive pavement performance of the composite modified asphalt concrete with 3.5%SBS+15%dry-mixed waste rubber powder is excellent in the test application,and is worthy of application and popularization.
作者
武宏钰
WU Hongyu(China Railway 18th Bureau Group No.2 Engineering Co.,Ltd.,Tangshang 064000,Hebei,China)
出处
《路基工程》
2023年第5期117-122,共6页
Subgrade Engineering
关键词
道路工程
干拌废胎胶粉
SBS改性沥青
复合改性沥青
沥青混合料
路用性能
road engineering
dry-mixed waste rubber powder
SBS modified asphalt
composite modified asphalt
asphalt mixture
pavement performance
