高强水泥胶砂自收缩温度依存性的实验研究  

An Experimental Study on Temperature Dependence of Autogenous Shrinkage of High Strength Mortar

作　　者：金莉[1] 杨杨[2] 

机构地区：[1]丽水学院机械电子与建筑工程学院,浙江丽水323000 [2]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《丽水学院学报》2008年第2期46-48,共3页Journal of Lishui University

摘　　要：分别通过对3个不同水灰比(0.25,0.30,0.35)和4个不同养护温度(10℃,20℃,30℃,40℃)条件下28d龄期内水泥胶砂自收缩的测定,揭示了水泥胶砂自收缩与养护温度之间的依存关系,为高强混凝土自收缩温度依存性的后续研究提供必要的参考依据。得出同一水灰比的胶砂,随着养护温度的升高,早龄期自收缩速率加快,自收缩量明显增大;随着水灰比的降低,自收缩量显著增大等初步结论。For the purpose of exposing the relationship between autogenous shrinkage of high strength mortar（HSM）and its curing temperature, a survey has been performed on autogenous shrinkage of HSM with three different water cement ratios（ W/C ） （0.25,0.30,0. 35） by four different curing temperatures （10℃, 20℃, 30℃, 40℃） in initial 28d age. Maybe, it can offer some essential reference for further research on temperature dependence of autogenous shrinkage of HSC/HPC. The conclusion is obtained that with the rising of curing temperature of mortar with a certain w/c, the rate and total amount of autogenous shrinkage strain increases promptly in early age, and with decreasing of w/c, the autogenous shrinkage strain increases apparently.

关 键 词：高强水泥胶砂 自收缩 温度依存性 养护温度 

分 类 号：TB302.3[一般工业技术—材料科学与工程]