一种无约束混凝土早龄期变形性能试验装置的研制  

Development of Testing Apparatus for Early-age Concrete Unconstrained Deformation

作　　者：张仁瑜 王景贤 徐教宇 戈兵 黄选明 王淑丽 ZHANG Ren-yu;WANG Jing-xian;XU Jiao-yu;GE Bing;HUANG Xuan-ming;WANG Shu-li(China Academy of Building Resaerch,Beijing 100013,China)

机构地区：[1]中国建筑科学研究院有限公司,北京100013

出　　处：《混凝土与水泥制品》2021年第7期84-87,共4页China Concrete and Cement Products

基　　金：北京市自然科学基金面上项目(8192051)。

摘　　要：为解决目前混凝土早龄期变形试验方法存在的缺陷(试模及润滑油脂对混凝土收缩变形的约束、无法准确测得混凝土初凝前的变形),采用重液悬浮混凝土试件的方法来消除试模对试件的变形约束,研发了一种能准确测量混凝土早龄期变形的试验装置。结果表明:通过该试验装置测得的数据具有一定的准确性。In order to overcome the defects of existing test methods(mould and lubricating oil restrict shrinkage of concrete,and cannot accurately measure the deformation before the concrete initial setting),a new testing apparatus for early-age concrete unconstrained deformation was developed for using suspension heavy-liquid in eliminating the restriction of mould.The results show that the data by testing apparatus has certain accuracy.

关 键 词：早龄期 混凝土变形(收缩、膨胀) 重液悬浮 无约束 试验装置 

分 类 号：TU641[建筑科学—建筑技术科学]