MgO膨胀剂在大体积混凝土裂缝控制中的应用研究  

Research on the Application of MgO Expansion Agent in Crack Control of Large Volume Concrete

作　　者：王军利 WANG Junli(China Communications Construction Group Co.,Ltd.,Beijing 10o024,China)

机构地区：[1]中交建筑集团有限公司,北京100024

出　　处：《中国厨卫》2023年第10期28-30,共3页Chinese Kitchen & Bathroom

摘　　要：文章研究了MgO膨胀剂的膨胀特性和作用机制,并合理配制了MgO膨胀剂,同时结合原材料优选,以及对施工和养护等环节进行裂缝控制,提升了大体积混凝土的抗裂和防水性能。实践证明,加入一定量的MgO的新型混凝土,在浇注28天后仍能维持一定的微胀性,无裂缝和无渗漏现象。The article studied the expansion characteristics and mechanism of MgO expansion agent,and reasonably formulated MgO expansion agent,At the same time,combined with the optimization of raw materials and crack control in construction and maintenance,it improved the crack resistance and waterproof performance of large volume concrete.Through practice,it has been proven that the new type of concrete with a certain amount of MgO can maintain a certain degree of micro expansion after 28 days of pouring,without cracks or leakage.

关 键 词：MGO 大体积混凝土 膨胀剂 

分 类 号：TU528[建筑科学—建筑技术科学]