A Case Study on Corrosion in Concrete Floating Docks in Qeshm Port

Ramesht, Mohammad Hasan; Tavasani, Mohammad Ali Mehdizadeh

doi:10.1016/j.proeng.2013.03.010

Cited by 5 publications

(3 citation statements)

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“…where V y is also noted as yield force based on the safety performance of the structure. Moreover, the over strength factor R s can be computed by Equation (7). V s is the yield force based on the first plastic hinge [55].…”

Section: Seismic Parameters Model Developmentmentioning

confidence: 99%

“…Moreover, bridges and culverts must be stable during an earthquake to have the vital needs delivered to their intended place on time. Past events such as fires [1][2][3], earthquakes [4][5][6], and defects such as corrosion [7][8][9] of steel in reinforced concrete member, durability issues including shrinkage cracking [10,11], thermal cracking [3,12], chemical attack [11,13,14], alkali-silica reaction [15][16][17], alkali-carbonate reaction as well as carbonation, delayed ettringite formation, freeze-thaw [17] and scaling [18,19] were observed in many reinforced concrete structures and infrastructures previously studied by the researchers. The results of these studies have shown the vulnerability of these types of buildings.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Fiber-Reinforced Polymer Bars for Reinforced Concrete Column Using Nonlinear Finite Element Algorithms

et al. 2021

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The ductility and strength of reinforced concrete (RC) columns could be noticeably improved by replacing steel bars with polymeric bars. Despite the previous research on RC columns, most of those studies focused only on the lateral load capacity of this structural member and were mainly costly experimental studies. However, this paper is concentrated on the previously occurred damages to the reinforced columns in the previous earthquakes. Subsequently, finite element analysis has been performed to examine 24 models including the various shapes of RC columns. In employing the plastic behavior of steel, carbon fiber-reinforced polymer (CFRP), and glass fiber reinforced polymer (GFRP) bars, the bilinear hardening has been considered. To capture both compressive and tensile behavior of the concrete, the concrete damage plasticity model has been implemented. Furthermore, the optimization technique is used for CFRP models to compare with other models. In this paper, the parameters of energy, seismic factor, stiffness, and ductility have been computed using the method proposed by the authors. This suggested method is considered to compare the results from each parameter. Finite element results of steel bars are compared with carbon and glass models. The results show the stiffness of models is improved by CFRP bars, while the energy absorption and ductility factor are enhanced with steel bars. Moreover, GFRP bars can enhance the seismic factor. The reduction of column stiffness to almost half would occur in some rectangular cross-section columns.

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Section: Seismic Parameters Model Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of Fiber-Reinforced Polymer Bars for Reinforced Concrete Column Using Nonlinear Finite Element Algorithms

et al. 2021

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“…Damage to concrete due to shock or impact might result in cover concrete cracking and subsequent ingress of seawater or saline air into concrete (Ramesht and Tavasani, 2013). The possible causes could be lack of using shock absorber devices or inadequate concrete cover.…”

Section: Physical Damages In Marine Concretementioning

confidence: 99%

Reinforcement corrosion in coastal and marine concrete: A review

Dauji¹

2018

CJCRL

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Concrete is used as a structural material for construction of buildings, jetties, harbors, etc. in many coastal and marine locations. The reinforcement used in concrete is susceptible to corrosion, resulting in loss of steel area, loss of bond, expansion of the reinforcement volume leading to cracking or spalling of concrete. Marine environment induces higher corrosion of reinforcement, compared to in-land locations. Concrete exposed to tidal fluctuations, or to the action of waves and currents are among the most severely affected. Corrosion of reinforcement in concrete is of major concern in coastal and marine environment. Control and monitoring of corrosion is a big challenge to engineers. In the recent years, different investigators reported their studies in this area. Depending on the severity of the exposure conditions, different corrosion inhibitors and protection methods have been attempted with varying degrees of success. The present article presents a generic review of the corrosion issues in marine concrete. Drawing from the experiences of the various researchers, the corrosion measurements, and corrosion control schemes, including use of coated reinforcements and corrosion inhibitors are discussed. The durability performance based design of concrete in the probabilistic framework and the life cycle cost analysis for durability design decisions have been identified as the future direction of corrosion protection of coastal and marine structures.

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