Short review of the study about chloride content in concrete
Chloride is an important influence factor for the durability of concrete structures.Reasonable and effective control of chloride content in concrete can prolong the service life of buildings.Therefore,it is particularly important to fully understand the variation rules and action mechanisms of chloride content under different influencing factors.It comprehensively reviews the variation rules and action mechanisms of chloride content in concrete under different cementitious material systems,curing temperatures and age periods.Among them,different binder systems have different ability to cure chloride in concrete.The chloride binding ability of auxiliary cementitious materials such as fly ash,slag powder and silica fume is directly related to their active components and dosage.The binding capacity of chloride increases rapidly before one day and stabilized after 28 days.Increasing the curing temperature can improve the binding capacity of chloride to a certain extent,but high curing temperature will reduce its binding capacity.In addition,by comparing and analyzing the influence of different test methods and characterization methods on chloride content,it believes that standardizing and unifying the test methods and characterization method of chloride content is of great significance for studying the change rules and action mechanisms of chloride content in concrete.
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