摘要
从预拌砂浆应用性能出发研究了存放时间对砂浆性能的影响。随着存放时间的延长,预拌砂浆的稠度和抗压强度经过一段时间的稳定后显著降低。预拌砂浆稠度一旦出现损失,其力学性能将不能满足设计要求。并指出砂浆专用缓凝剂可以延长预拌砂浆存放时间而保证砂浆的性能不受影响。
According to the real condition of ready-mixed mortar, influence on performance of ready-mixed mortar from standing time was investigated.The results show： as standing time progresses, consistency and compressive strength of ready-mixed mortar placed in the closed container were decreased markedly after a flat.The decrease was irrecoverable.The retarding agent of ready-mixed mortar may prolong the standing time and the performance of ready-mixed mortar was unchanged.
出处
《混凝土》
CAS
CSCD
北大核心
2007年第5期38-40,共3页
Concrete
基金
江苏省建设厅计划项目(JS20033)
关键词
预拌砂浆
存放时间
稠度
抗压强度
ready-mixed mortar
standing time
consistency
compressive strength
