Study of Influence of Ibmperature on Durability of Reinforced Concrete

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(1) It was confirmed that the corrosion rate of steel bars in concrete increased with the temperature rising. And it was confirmed that the deterioration of reinforced concrete due to the steel corrosion apparently agreed with the Arrhenius theory.(2) In addition, it became possible to construct the ionic migration system in the concrete which considers the influence of temperature by in ionic migration system (Nernst - to designate Planck system as basic system, ionic migration system which considers Debye-Huckel system which expresses influence of coexistence ion and electrical neutrality condition for judging entire ionic migration) in the concrete which is the research result of the applicant Arrenius system adding.(3) According to the results, the life time of reinforced concrete exponentially decreased with the temperature of the city increasing. Especially, it was indicated that the environment against steel corrosion in concrete from the viewpoint of temperature effect. The life time of reinforced concrete in South-East Asia became 70% of that in mild temperature environment (20℃).