外掺剂对水泥稳定碎石基层密实度的影响分析  

The effect of additives on the density of cement stabilized macadam base

作　　者：王颖[1] 胡永胜[2] 夏元野 WANG Ying HU Yongsheng XUA Yuanye(Heilongjiang Institute of Technology, Harbin 150050, China Longjian Road and Bridge Co. , Ltd. , Harbin 150001, China)

机构地区：[1]黑龙江工程学院,哈尔滨150050 [2]龙建路桥股份有限公司,哈尔滨150001

出　　处：《交通科技与经济》2017年第1期42-45,共4页Technology & Economy in Areas of Communications

摘　　要：以水泥稳定碎石基层的密实性为研究对象,通过在水泥稳定碎石中加入不同掺量的减水剂和粉煤灰,测其最佳含水量和最大干密度。试验结果表明,单掺减水剂时,随着减水剂掺量的增大,密实度会增大,超过最佳掺量时会泌水;单掺粉煤灰时,达到最佳掺量的粉煤灰时,密实度最好;双掺时,减水剂掺量为1.0%和粉煤灰掺量为10%时,混合料密实效果最好。通过振动击实试验,利用振动时间间接地评价水泥稳定碎石的密实性。In this paper,based on the compaction of cement stabilized macadam base,the optimum water content and maximum dry density are measured by adding different dosage of water reducing agent and fly ash into cement stabilized macadam.The test result shows that when the single mineral water reducing agent is mixed with the increase of dosage of water reducing agent,the compactness increases;when mixed more than its best dosage,the cement stabilized macadam will be bleeding;mixed with the single fly ash,when reaching the optimum dosage of fly ash,the compaction will be best;when the water reducing agent and the fly ash are added at the same time,the mixture density effect is best,especially the water reducing agent is 1%and the fly ash is 10%.At the same time through the vibration compaction test,the vibration time can indirectly evaluate the compaction of cement stabilized macadam.

关 键 词：水泥稳定碎石 密实性 减水剂 粉煤灰 外掺剂 

分 类 号：U416[交通运输工程—道路与铁道工程]