高强混凝土的收缩和早期徐变特性  

Shrinkage and Creep of HSC at Early Age

作　　者：祝昌暾 陈敏 杨杨[3] 欧新新[3] 陈飞云 

机构地区：[1]浙江广源建设工程有限公司,杭州310016 [2]天和建设有限公司,杭州310015 [3]浙江工业大学建筑工程学院,杭州310032 [4]浙江省天台县建筑工程公司,317200

出　　处：《混凝土与水泥制品》2005年第2期1-4,共4页China Concrete and Cement Products

基　　金：浙江省自然科学基金资助项目(M503056)

摘　　要：以掺硅粉的大流动性高强混凝土为研究对象,对混凝土在常温常湿的室内条件下的自收缩、干缩收缩和徐变特性进行了实验测定,讨论了干燥开始龄期和加载龄期对收缩和徐变的影响,并通过引入凝结时间的要素对MC90的收缩和徐变系数预测式进行了修正,使其也能适合于早龄期。An experimental investigation on shrinkage and creep of HSC, which specimens were cured in different condition and loaded at different ages has been down. The effects of the age, at which the drying and/or the loading are started, on shrinkage and creep behaviors are discussed. And based on the experimental results the equations of CEB-FIP MODEL CODE 1990 for predicting autogenous shrinkage and creep of HSC are modified.

关 键 词：高强混凝土 收缩 徐变 早期 

分 类 号：TU528[建筑科学—建筑技术科学]