氧化镁膨胀剂及其在混凝土中的应用  

Magnesium Oxide Expansion Agent and Its Application in Concrete

作　　者：陈昌礼[1] 林喜华 CHEN Chang-li;LIN Xi-hua(School of Materials and Architecture Engineering,Guizhou Normal University,Guiyang 550025,China;China West Construction Guizhou Co.,Ltd.,Guiyang 550008,China)

机构地区：[1]贵州师范大学材料与建筑工程学院,贵阳550025 [2]中建西部建设贵州有限公司,贵阳550008

出　　处：《科学技术与工程》2020年第28期11413-11420,共8页Science Technology and Engineering

基　　金：国家自然科学基金(51869005,51269003,50969002)。

摘　　要：本文针对欲将MgO膨胀剂应用于非水工大体积混凝土的设想,通过分析MgO膨胀剂的由来、质量及其控制、掺量及在水工大体积混凝土中的应用情况后指出,现有的水工外掺MgO混凝土的研究与应用成果,为高坝混凝土应用MgO膨胀剂奠定了坚实基础,但在非水工大体积混凝土结构中应用MgO膨胀剂时,应慎之又慎,切忌盲目套用。The research was based on the assumption that magnesium oxide(MgO)expansive agent could be applied to a non-hydraulic mass concrete.Firstly,the analysis of the origin of MgO expansive agent,and its control quality,content and application in the hydraulic mass concrete were conducted.Then,that the existing of the additive MgO expansive agent of research and application of hydraulic concrete laid a solid foundation for high dam concrete application of MgO expansive agent.But in a non-hydraulic mass concrete structure,the application of MgO expansion agent should be cautious and avoid blindly application.

关 键 词：氧化镁膨胀剂 氧化镁混凝土 由来 应用 水工大体积混凝土 

分 类 号：TV431[水利工程—水工结构工程]