Mechanical Properties of Corroded-Damaged Reinforced Concrete Pile-supporting Wharves
Auteur(s): |
Cecielle N. Dacuan
Virgilio Abellana Hana Astrid Canseco |
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Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Civil Engineering Journal, 30 novembre 2020, n. 12, v. 6 |
Page(s): | 2375-2396 |
DOI: | 10.28991/cej-2020-03091624 |
Abstrait: |
Corrosion is one of the significant deteriorations of reinforced concrete structures. It accelerated the performance loss of the structures, leading to a cross-sectional reduction of steel, which affects its mechanical properties, particularly its tensile capacity and ductility. The purpose of this study is to assess the serviceability and safety of corroded-damaged structures, particularly those exposed to aggressive marine environments. A total of 54 pcs of 150 mm-diameter and 300mm-height of cylindrical specimen were cast. Small-scaled specimens were accelerated to corrosion using impressed current techniques with a constant current density of 200 µA/cm². Samples were immersed in a simulated environment with a 5% solution of sodium bicarbonate during corrosion acceleration. Corrosion alters the surface configuration of the steel bar. Pitting corrosions due to chloride aggression causes the residual cross-sectional area of corroded rebars to no longer round and varies considerably along its circumference and length. The reduction of the steel cross-sectional area has a significant impact on the degradation of the strength and durability of reinforcing structures. The residual capacity of the corroded reinforcement decreases with the reduction of the cross-sectional area of the steel reinforcement. The rate of corrosion affects the extent of the remaining service life of a corroded reinforced concrete structure. |
Copyright: | © 2020 Cecielle N. Dacuan, Virgilio Abellana, Hana Astrid Canseco |
License: | Cette oeuvre a été publiée sous la license Creative Commons Attribution 4.0 (CC-BY 4.0). Il est autorisé de partager et adapter l'oeuvre tant que l'auteur est crédité et la license est indiquée (avec le lien ci-dessus). Vous devez aussi indiquer si des changements on été fait vis-à-vis de l'original. |
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10526232 - Publié(e) le:
09.12.2020 - Modifié(e) le:
02.06.2021