掺减缩剂水泥稳定碎石抗裂性能研究  

Research on Anti-crack Performance of Cement-stabilized Macadam with Shrinkage Reducing Agent

作　　者：刘孝江 丁胜 程箭[2] 

机构地区：[1]盐城市交通局,江苏盐城224005 [2]同济大学道路与交通工程教育部重点试验室,上海200092

出　　处：《现代交通技术》2009年第3期1-4,共4页Modern Transportation Technology

摘　　要：对掺减缩剂水泥稳定碎石进行了抗压强度试验、劈裂强度试验和干缩试验。结果表明,减缩剂具有减水效应,掺减缩剂水泥稳定碎石90d抗压强度和劈裂强度增加,但90d劈裂应变减小,不利于抗裂性能的提高;掺减缩剂水泥稳定碎石干缩应变大幅减小;水泥稳定碎石掺减缩剂的最佳掺量为2%。The tests of compressive strength, splitting strength and dry shrinkage were made for cement-stabilized macadam with shrinkage reducing agent. Results indicated that shrinkage reducing agent can reduce the optimum water content. With shrinkage reducing agent, the compressive strength and splitting strength at the age of 90 d increases, but the splitting strain decreases. Shrinkage reducing agent can reduce dry shrinkage of cement-stabilized macadam greatly. The optimum dose of shrinkage reducing agent is 2 percent.

关 键 词：水泥稳定碎石 减缩剂 抗裂性能 

分 类 号：U414[交通运输工程—道路与铁道工程]