测量内约束混凝土收缩应力的新方法

New Measurement Method of Shrinkage Stress for Internal Restrained Concrete

关键词:  混凝土  收缩应力  内约束  测量方法

Key words:  concrete,shrinkage stress,internal restrained,measurement method

摘要:

介绍了一种测量混凝土收缩应力的方法，该方法可以准确且简便地测量规定龄期混凝土试件因化学减缩、自干燥收缩和失重干燥收缩所产生的收缩所应力总和，并能评估混凝土配合比、约束条件和抗裂材料对混凝土收缩应力的影响．

Abstract:

A method to measure the shrinkage stress of concrete is introduced. The sum of all shrinkage stresses, which are caused by Chemical contraction,autogenous shrinkage and drying shrinkage of concrete at prescribed curing ages, can be accurately and simply measured by this method. Another function of this method is for evaluating the influence of concrete mix-design, restraint condition and crack-resistant materials on the shrinkage stress of concrete.