Corrosion Performance of Various Reinforced Concretes Subjected to a Systematic Wetting–Drying Cycle Regime in Real Marine Environment
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 5
Abstract
This study contributes to the understanding of the chloride-induced corrosion of steel rebars embedded in various concretes. Concrete specimens were exposed to systematic wetting–drying cycles in real seawater via a platform installed on a pier. Various mixtures were designed using three different cement types and two binder dosages (therefore two water/cement ratios) with and without fly ash. The strength development and electrical conductivity of the mixtures were assessed prior to the cycles. The dimensional stability, flexural strength, compressive strength, and chloride penetration depth of plain concretes were scrutinized during the cycles. The corrosion processes of 360 RC specimens with three different cover thicknesses were monitored. The test results revealed that increasing the dosage of cement, and therefore decreasing the water/cement ratio, was a more effective corrosion-mitigation approach than was the utilization of fly ash or enhancing physical protection.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was supported by the Scientific and Technological Research Council of Turkey (TÜBİTAK, Project Code 112M899). The authors gratefully acknowledge the financial support of TÜBİTAK. Special thanks also are given to Bursa Beton A. Ş, A. Hilmi Aytaç (M.Sc.C.Eng), and H. Levent Sevín for the outstanding and generous support throughout this study. The authors also grateful are for the valuable support of Farhad Ghajeri (M.Sc.C.Eng) during the experiments.
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Received: Oct 21, 2021
Accepted: Aug 5, 2022
Published online: Feb 21, 2023
Published in print: May 1, 2023
Discussion open until: Jul 21, 2023
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