冷再生旧沥青路面材料评价及乳化沥青用量研究

摘要

Deep soft foundation pit excavation is the key point and difficult point in foundation pit engineering.The application of PHC pipe pile combined with annular inner support is introduced in soft foundation pit through engineering examples.The feasibility of PHC pipe piles applied in deep soft foundation pit is discussed and the principle of bending moment control of PHC pile is advanced.The result has higher reference value for the similar foundation pit supporting engineering.%在介绍乳化沥青冷再生技术的基础上,依托昌九高速公路技术改造项目对回收旧沥青路面材料(RAP)进行试验研究,分析评价RAP料级配组成状况和力学性能;采用三种不同的乳化沥青用量进行冷再生配合比试验分析,结果表明,合理的乳化沥青用量为3.5%,为再生混合料配合比设计提供参考.