Journal
CEMENT AND CONCRETE RESEARCH
Volume 31, Issue 3, Pages 343-349Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-8846(00)00506-8
Keywords
acceleration; corrosion; durability; fatigue
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Fatigue loading is a significant factor in determining the service life of the marine concrete structures, as it considerably enhances the deterioration process in a corrosive marine environment. To evaluate the durability of marine concrete structures subjected to fatigue loading, accelerated laboratory testing was carried out on full- and half-size reinforced concrete specimens, subjected to static and fatigue loading with three different water cement ratios (w/c = 0.3, 0.4, and 0.6). The marine tidal zone was simulated by alternate filing and draining of the tank, and a galvanostatic corrosion technique was used to accelerate corrosion of the reinforcement. Half-cell potential measurements and crack investigations were followed by ultimate strength testing. The significant findings include the adverse effect of fatigue loading, existence of an explicit size effect, and the negative effect of increasing water/cement ratio. (C) 2001 Elsevier Science Ltd. All rights reserved.
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