Long-Term Performance of Seawater Mixed Concrete under Marine Condition - Test Results after 32years’ Exposure Test -

Abstract

In concrete production, as mixing water, curing water and washing water, huge volume of water is consumed all over the world. For suppressing pure water consumption, one effective method is to use sea water as replacement of pure water. If the use of seawater as mixing water in concrete is possible, it would be very beneficial and economical in construction, especially in coastal works or isolated island. This study includes several investigations on durability of concrete mixed with seawater and pure water. The specimens were exposed to tidal pool utilizing natural seawater for 32years. In this study, the effect of seawater mixing on concrete deterioration and steel corrosion of RC beam under marine condition is investigated. The results indicate the possibility of concrete production mixed with seawater.

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