再生骨料混凝土结构裂缝修复试验与工程应用研究

Recycled Concrete Structure Crack Repair Experimental Study and Engineering Application

再生骨料混凝土结构出现裂缝后,构件承载力受到影响,本文对再生骨料混凝土结构裂缝进行了统计,得出了工程中再生骨料混凝土结构裂纹产生的原因与分布规律,并对常用裂缝修复技术抵抗二次开裂能力进行了对比试验,对再生骨料混凝土裂纹进行了研究,得到了修复准则,可直接指导实际工程应用。

After the crack appear in the recycled concrete struc- ture, Some adverse effects will be caused in the performance of the structure such as durability of the structure, the cracks more easily lead to reinforcement corrosion, durability reduction and impact bearing capacity. In this paper, 104 structure projects which has occurred cracks have been tallied up. The rules and reasons of crack distribution have been obtained. The experiment has been carried out, and the commonly used crack repair tech- niques to resist two cracking test are compared. The recycled concrete crack repair of basic principles, procedures and methods of crack repair can directly guide the practical engineering appli- cation.