Self-shrinkage rate measuring device and method for building engineering concrete

The concrete used for building construction will self-shrink from pouring to solidification to a designed strength, so that the volume of the concrete will be reduced, and the safety quality hidden danger will be caused to the building engineering structure. The invention designs a self-shrinkage rate measuring device for building engineering concrete for measuring the self-shrinkage rate. When measuring, pouring the concrete into the measuring device and determining the self-shrinkage rate of the concrete according to the volume change of the oil in the device caused by the self-shrinkage ofthe concrete. The self-shrinkage characteristic of the concrete can be obtained through the self-shrinkage rate of the concrete obtained by performing multiple sets of tests of the same labeled concrete and multiple sets of tests of different labeled concrete. 现在建筑施工所用的混凝土，从浇筑到凝固至设计强度期间混凝土会发生自收缩现象，导致其体积的减少，从而对建筑工程结构造成安全质量隐患。本发明设计种建筑工程混凝土自收缩率测量装置用于测量其自收缩率，将混凝土倒入装置中，通过混凝土的自收缩引起装置内机油体积的改变，从而确定混凝土的自收缩率。通过进行相同标号混凝土的多组试验和不同标号混凝