掺钢渣SBS改性沥青混凝土自修复性能研究

摘要

为研究钢渣在沥青路面感应热自修复技术中的可行性,利用电磁感应加热方式对掺钢渣 SBS 改性沥青混凝土的路用性能进行了系统的试验,分析了试件的膨胀温度和升温速率,得出了裂缝愈合的最佳时机.结果表明:掺钢渣沥青混合料的路用性能满足规范要求;感应加热温度不超过95 ℃,否则试件会膨胀松散;沥青混合料平均升温速率随钢渣掺量和粒径的增加而提高;75 ℃可作为感应加热的最佳修复温度;综合试验结果,粒径 1.0 mm、掺6％的钢渣具有较好的力学性能和修复效率.%In order to study the feasibility of steel slag in induction heating self repairing technolo-gy of Asphalt Pavement,The test of asphalt concrete modified by steel slag SBS was carried out by elec-tromagnetic induction heating.The test proved the road performance of the mixture,the expansion tem-perature and heating rate of the specimens,the best time for fracture healing.The results show:The road performance of the steel slag asphalt mixture meets the requirements of the code.Induction heating tem-perature is not more than 95 ℃,otherwise the specimen will expand loose.The average heating rate of asphalt mixture increases with the increase of slag content and particle size.75 ℃ can be used as the best repair temperature for induction heating.Comprehensive test results show that slag with particle size 1.0 mm and 6％has good mechanical properties and repair efficiency.