泡沫沥青二次冷再生混合料级配优化及路用性能研究  

Research on Grading Optimization and Road Performance of Foamed Asphalt Secondary Cold-recycling Mixture

作　　者：康峰沂 商健林 杜仲宝 钱光耀 徐冬辉 Kang Fengyi;Shang Jianlin;Du Zhongbao;Qian Guangyao;Xu Donghui(Nantong Highway Development Center,Nantong 226000,China;Jiangsu North Star Transportation Industry Group Co.,Ltd.,Nantong 226000,China)

机构地区：[1]南通市公路事业发展中心,南通市226000 [2]江苏北极星交通产业集团有限公司,南通市226000

出　　处：《北方交通》2024年第12期34-38,共5页Northern Communications

基　　金：南通市公路事业发展中心科技项目(2022PMLQYJ)。

摘　　要：沥青路面二次铣刨料在初次铣刨的基础上进一步劣化,为保证二次再生料性能达到相关规范要求,在旧料分析的基础上优化再生料级配,分别通过车辙试验、半圆弯曲试验、浸水马歇尔试验和冻融劈裂试验对泡沫沥青二次冷再生混合料的高温稳定性、低温抗裂性和水稳定性进行测试。结果表明:泡沫沥青二次冷再生混合料的高温稳定性、低温抗裂性劣于初次冷再生混合料,而水稳定性略优于初次冷再生混合料。The secondary milling material of asphalt pavement is further deteriorated on the basis of the initial milling.In order to ensure that the performance of the secondary recycled material meets the requirement of the relevant specification,the gradation of the recycled material is optimized on the basis of the old material analysis,and the high-temperature stability,low-temperature crack resistance and water stability of the foamed asphalt secondary cold-recycling mixture are tested respectively by rutting test,semi-circular bending test,water immersion Marshall test and freeze-thaw splitting test.The results show that:the high-temperature stability and low-temperature crack resistance of the foamed asphalt secondary cold-recycling mixture are inferior to those of the initial cold-recycling mixture,while the water stability is slightly better than that of the initial cold-recycling mixture.

关 键 词：道路工程 泡沫沥青冷再生 级配设计 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]