不同配合比与约束条件下混凝土收缩开裂研究

With the widespread application of high-strength concrete, the autogenous shrinkage and early cracking of concrete have become hot issues in the engineering field. This paper will conduct experimental research on concrete under different mix ratios and restraint conditions, and obtain and analyze concrete shrinkage data of different strength grades and different ages and concrete cracking observation data under different restraint conditions. It is found that the early shrinkage and pore structure of concrete with different mix ratios are significantly different, The smaller the water-cement ratio of concrete, the faster the cracks develop after the concrete cracks, and the average width and length of the cracks formed are larger.