Abstract
By way of the soaking and drying cycle test on the different mix proportions vertical section of 10 pieces of RC beams suffered artificial sea water (ASW) corrosion under0,35,70,105,140 times of dry-wet cycles, the compared result of exerting pressure test of these beams under simply supporting were investigated. The law about the changes of the mechanical performance for RC beams with different mix proportions under different time periods for suffering corrosion of dry-wet cycles was as follows: The resistibility to ASW corrosion for the concrete specimens with various water cement ratio (various initial strength) are different;The characters of normal section failure for RC beams attacked by sea water are about the same as that for ordinary RC beam; Along with the extension of the time for seawater attack, the bearing capacity for normal section of RC beams varies wave upon wave. The specimens attacked by seawater for about 35 times of corrosion cycle achieve minimum bearing capacity. KEYWORDS: reinforced concrete beam; sea water corrosion; bearing capacity;
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