地下室剪力墙局部混凝土爆裂原因分析  

Cause analysis of local concrete bursting of shear walls in a basement

作　　者：曾亮 牛宝 张洪波 ZENG Liang;NIU Bao;ZHANG Hongbo(Sichuan Institute of Building Research,Chengdu 610081,China;Sichuan Testing Center for Construction Engineering Quality Limited,Chengdu 610081,China)

机构地区：[1]四川省建筑科学研究院有限公司,四川成都610081 [2]四川省建筑工程质量检测中心有限公司,四川成都610081

出　　处：《四川建筑科学研究》2024年第3期57-61,共5页Sichuan Building Science

摘　　要：水泥中的游离CaO(f-CaO)对混凝土质量的影响已经得到了很大程度的控制,但CaO仍以其他方式影响着混凝土质量。为了分析某大厦地下室剪力墙局部混凝土爆裂的原因,依据《建筑结构检测技术标准》(GB/T 50344—2019)的判定方法,得出混凝土中的f-CaO未超限,再结合X射线荧光技术定量分析了混凝土化学成分,找出了混凝土爆裂的原因,并由此引入了“聚团未水化CaO”的概念。The influence of f-CaO on concrete quality has been largely controlled,but there are still other factors affecting concrete quality.In order to analyze the cause of local concrete bursting of the shear walls of a certain building basement,based on the judgment method of Technical standard for inspection of building structure(GB/T 50344—2019),it was found that f-CaO in the concrete did not exceed the limit.X-ray fluorescence technology was used to quantitatively analyze the chemical composition.The cause of concrete bursting was analyzed,and the concept of"agglomerated unhydrated CaO"was introduced accordingly.

关 键 词：爆裂 骨料 CAO 

分 类 号：TU375[建筑科学—结构工程]