The Qinghai-Tibet Plateau,with an average altitude exceeding 4,000 meters,is characterized by its high elevation,low atmospheric pressure,and frequent freeze-thaw cycles.Freeze-thaw damage is one of the primary factors leading to the deterioration of concrete structures in this high-altitude region.This paper reviews the current research on air-entrained concrete in plateau environments,examining the impact of low atmospheric pressure on the performance of air-entraining agents,air content,pore structure,air-void structure in concrete.It also proposes measures to enhance the freeze-thaw durability of concrete under plateau conditions.
关键词
高原环境/引气混凝土/引气剂性能/含气量/气孔结构/孔结构/抗冻耐久性
Key words
Plateau/Air-entraining concrete/Foam property of AEA/Air content/Air-void structure/Pore structure/Freeze-thaw durability
维普
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