补偿收缩混凝土应用技术研究  

Research of application on shrinkage-compensating concrete

作　　者：姚婷[1] 张守治[1] 王育江[1] 郭飞[1] 

机构地区：[1]江苏省建筑科学研究院有限公司高性能土木工程材料国家重点实验室,江苏南京210008

出　　处：《混凝土》2014年第5期157-160,共4页Concrete

基　　金：国家自然科学基金(50978126);973课题(2010CB735801)

摘　　要：介绍了补偿收缩混凝土补偿收缩的原理,并对某大面积补偿收缩混凝土底板施工全过程进行了实时连续监测,给出了补偿收缩混凝土温度、应变的基本变化规律,研究了温度变化对应变的影响,并对底板应力进行了分析。结果表明:现场浇筑两个月后未发现任何裂缝,补偿收缩混凝土能有效降低结构的开裂风险。同时监测结果将为混凝土结构早期裂缝控制和耐久性研究提供有益参考,为补偿收缩混凝土进一步应用提供依据,也可供今后类似工程及研究参考借鉴。The principle of compensating shrinkage is introduced.By real-time continuous monitoring, the whole constructions process of the shrinkage-compensating concrete floor, the temperature, stain and steel stress are obtained, and the effect of temperature on strain and steel stress are investigated, meanwhile the stress of the floor is analyzed.The result showed that：there was no crack in the two months after in-situ pouring, compensating concrete can effectivly reduce crack risk of structure.At the same time,the ＇monitoring results can provide useful reference for early crack control and durability of concrete structure,and basis for further application of shrinkage-compensating concrte, as well as which is avaliable in the future for reference to similar projects and research.

关 键 词：补偿收缩混凝土 底板 抗裂 温度 应变 监测 

分 类 号：TU528.01[建筑科学—建筑技术科学]