Research Of New System And Mechanism Of Concrete Durability And Preventing AAR In Shanxi Province

In the paper, the present situation of concrete security durability in the base establishment, and the status of research items and their achievements application of concrete durability in shanxi province, were investigated in detail. Based on the investigation results the new research items, the new system and mechanism in concrete durability in shanxi province were suggested.Combining on the investigation achievements of the base establishment concrete durability in shanxi province and the recent research situations of alkali aggregation reaction (AAR) all over the world, on the condition of the same mortar fluidity, the preventing effects of mineral and chemical admixtures on AAR were researched.The research result indicated that on the condition of the same mortar fluidity, the preventing effects of mineral and superplasticizer compounded on AAR are better than that of mineral used singly, the preventing effects of mineral admixture and entraining agent compounded are better than that of mineral admixtures used singly, the preventing effects of mineral and superplasticizer and entraining agent compounded are lower than that of mineral admixture and entraining agent compounded.The research achievement has some guiding sense on the recognition of AAR prevention in pumping HPC and the researches of test methods for determining the alkali reactivity of aggregate used in HPC.