Corrosive Environment Monitoring System Of Concrete Bridge Durability

In recent years, concrete durability problem has already caused people more and more attention. Because suffering carbonation, chloride ionerosion and freeze-thaw effect etc,will lead to concrete structure crack, the corrosion of reinforcement and concrete structure reinforced bilge crack and pineapple destruction, it has become the main affecting the durability of concrete construction. Bridge structure in water because of pile foundation and pier changes or containing harmful ions with parts, the durability of soil contact is particularly severe damage phenomenon. Research concrete durability monitoring technology, enhance the durability of the concrete structure, to ensure that the design use fixed number of year for the buildings in security and reliability, improve safety in construction service life has the vital significance.Based on the actual project jinghu high speed railway QingCang big bridge pile foundation and durability of concrete pier monitoring to rely on, utilizing laboratory equipment for different kinds of concrete structure endurance in the working principle and working environment research; The experiment uses the embedded type anode ladder monitoring system working principle for research, by setting up much group contrast that controlled trials testing system, electrochemical parameter measurement with the relationship between rebar corrosion status. But at the same time income experimental conclusion combination QingCang beijing-shanghai railway engineering practice, big bridge on the durability of concrete were evaluated. For monitoring system in electrochemical parameter and rebar corrosion situation qualitative analysis and quantitative analysis in the process, to design and facture several sets of monitoring system, and reached for the durability of concrete monitoring of expectations.This paper shows that:embedded type anode ladder monitoring system better response anode reinforced macro trends and rebar corrosion current situation, the relationship between the results in engineering practice, no damage of concrete structure has guiding significance for monitoring.