碱集料反应对混凝土结构的破坏及化学抑制措施  

Research Progress of Alkali Aggregate Reaction in Concrete Structure and Chemical Inhibition Technology

作　　者：王子嘉 Wang Zijia(Sino-Coal Engineering Group Beijing Huayu Engineering Co.,Ltd.,Beijing 100120,China)

机构地区：[1]中煤科工集团北京华宇工程有限公司,北京100120

出　　处：《广东化工》2023年第18期62-63,44,共3页Guangdong Chemical Industry

摘　　要：本文简述了混凝土结构中碱集料反应的破坏现象及其抑制措施。碱集料反应包括碱硅酸反应和碱碳酸反应等两种化学侵蚀现象。碱集料反应的检测技术包括岩相法(RILEM标准)、砂浆棒快速法(ASTM标准)、混凝土棱柱体法(CSA标准)等。碱集料反应矿物掺合料抑制技术和化学外加剂技术,其中矿物掺合料技术包括粉煤灰和矿渣等混凝土结构常用矿物掺合料,化学外加剂技术主要涉及锂盐外加剂。最后对混凝土结构中碱集料反应的研究与应用发展方向进行了展望。Damage of alkali aggregate reaction(AAR)in concrete structure as well as its chemical inhibition technology had been reviewed in this article.AAR had included two affiliated reactions which were alkali silica reaction(ASR)and alkali carbonate reaction(ACR).There were a few methods and standards for AAR to test alkali reactivity which originated from RILEM standard,ASTM standard and CSA standard,respectively.The chemical inhibition technology referred to mineral admixture additives and chemical agents.The damage of AAR could be inhibited or retarded by fly ash and ground granulated blast-furnace slag.Meanwhile,the lithium chemical agents also had same effects on AAR.At last,future developments of AAR in concrete structure as well as its chemical inhibition agents had been proposed.

关 键 词：碱集料反应 碱硅酸反应 碱碳酸反应 混凝土结构 化学外加剂 

分 类 号：TQ175[化学工程—硅酸盐工业]