补偿收缩混凝土变形性能研究进展  

Research Progress of Deformation Performance of the Shrinkage-Compensated Concrete

作　　者：李鹏[1] 苗苗[1] 苗芳 姜洪伟 马晓杰[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]国网营口供电公司,营口115000

出　　处：《硅酸盐通报》2016年第1期192-197,208,共7页Bulletin of the Chinese Ceramic Society

基　　金：中央高校基本科研业务费(CDJZR13130029);高等学校博士学科点专项科研基金新教师类资助课题(20130191120019)

摘　　要：向混凝土中掺加膨胀剂制成补偿收缩混凝土是解决混凝土收缩开裂的一种重要措施。本文针对近年来补偿收缩混凝土变形性能的研究进展进行了综述。膨胀剂种类繁多,不同膨胀剂膨胀机理各不一样,致使出现同种掺量同种补偿对象但膨胀剂不同则补偿收缩效果不同,甚至截然相反现象。另一方面,影响补偿收缩混凝土变形性能因素众多,主要有水胶比、矿物掺合料种类及掺量、膨胀剂掺量、外加剂、养护条件等,但更多时候是若干个影响因素同时出现,整体变形结果更加不确定,也会导致工程上膨胀剂应用失效现象出现。Adding the expansive agent into the concrete is one of the most important approach to resolve the problem of the shrinkage or crack of the concrete. For this reason, the article summarized the progress in research of deformation performance of the shrinkage-compensated concrete. There are a variety of expansive agents. Different kinds of expansive agents lead to different expansive mechanism. Even for the same dosage and the same compensated object, different expansive agent result in different results or even completely opposite. And the deformation performance of the shrinkage - compensated concrete will be effect on many impact factors, such as the ratio of water to binder, mineral admixtures, dosage of the expansive agent, admixtures, curing conditions and so on. Nevertheless, in most cases, it is many impact factors appearing at the same time that results in the result of the deformation unsure. And the usage of the expansive agents goes wrong frequently.

关 键 词：补偿收缩 膨胀剂 自收缩 水化 

分 类 号：TU528[建筑科学—建筑技术科学]