掺合料与引气剂对寒冷地区混凝土设施结构性能影响分析

Analysis on the Influence of Admixtures and Air Entrainment Agents on the Structural Performance of Concrete Facilities in Cold Areas

寒冷地区混凝土设施较容易因为长期处于冻融环境下而产生抗冻融破坏和压溃破坏。文章对当前冻融环境下混凝土设施解决抗冻融破坏和压溃破坏的常用方法进行总结,认为在混凝土中加入掺合料以及引气剂,能够有效提升冻融环境下混凝土的耐久性能。文章对学者相关研究进行总结,对掺合料颗粒大小、种类、以及引气剂等指标对冻融环境下混凝土的具体性能影响进行综述。旨在探究寒冷地区增强混凝土设施抗压强度和抗冻融性能的方法,对提高我国北方寒冷地区混凝土设施耐久性能具有较强的借鉴价值。

Concrete facilities in cold areas are prone to freezing-thawing damage and crushing damage due to long-term freezing-thawing environment.This paper summarizes the common methods of concrete facilities in freezing-thawing environment to deal with freezing-thawing damage and crushing damage,and concludes that adding admixtures and air entrainers to concrete can effectively improve the durability of concrete in freezing-thawing environment.This paper summarizes the relevant researches of scholars,and reviews the influences of admixtures particle size,type,air entrainment agent and other indexes on concrete performance under freeze-thaw environment.This paper aims at exploring the methods of strengthening the compressive strength and freezing-thawing resistance of concrete facilities in cold regions,which have strong reference value for improving the durability of concrete facilities in cold regions of north China.