Influence of atmospheric corrosion on the mechanical properties of reinforcing steel

Allam, I.M.; Maslehuddin, Mohammed; Saricimen, H.; Al-Mana, A.I.

doi:10.1016/0950-0618(94)90006-x

Cited by 41 publications

(35 citation statements)

References 7 publications

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“…It was shown that the corrosion rate is not 6 constant, and they suggested a time-dependent corrosion rate 7 (see Equation (3)) [5]. 8 The third model has been developed for pitting corrosion 9 build up on the constant value of corrosion rate based on the 10 average deterioration of reinforcement in concrete (see Equa- 11 tion (2)) [6]. However, past studies indicate that the rate of 12 corrosion decreases over time due to the formation of corrosion 13 products around the bar causing impedance of the diffusion of 14 iron ions [4,5].…”

mentioning

confidence: 99%

“…To quantify the reduction in mechanical 17 properties due to corrosion, reduction factors have been 18 proposed by researchers. A number of monotonic tensile tests 19 on corroded steel bare bars (corroded by exposure to the 20 environment or using accelerated corrosion) have been carried 21 out to estimate the reduction factors corresponding to the 22 mechanical properties [7][8][9][10][11][12][13][14][15][16]. Beam bending tests have also been 23 carried out in past studies to estimate the reduction factors 24 [11,16].…”

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Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Andisheh

Scott

Palermo

2016

Materials and Corrosion

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6 and tensile behavior of reinforcing bars are studied via experimental tests and 7 analytical modeling, respectively. Hemispherical indentation is mechanically 8 produced on the reinforcing steel to simulate pitting corrosion. Static tensile 9 tests are conducted for 9 non-corroded and 54 pitting corrosion-simulated bars 10 with varying levels of pit sizes using two different test setups. This investigation 11 has resulted in clear quantification of the relationship between the degree of 12 corrosion and the mechanical properties of steel reinforcement.13

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Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Andisheh

Scott

Palermo

2016

Materials and Corrosion

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“…At this stage, the loss of bar diameter generally is very low (e.g. Andrade et al 1993;Allam et al 1994;Maruyama 1999;Almusallam 2001) and it is very unlikely the corrosion will considerably affect the strength of a structure.…”

Section: Life Cycles Of Cps Componentsmentioning

confidence: 99%

Modelling of Corrosion Protection for Reinforced Concrete Structures With Surface Coatings/Gelžbetoninių Konstrukcijų Su Paviršinėmis Dangomis Korozinės Apsaugos Modeliavimas

Kamaitis

2008

Journal of Civil Engineering and Management

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Abstract. Corrosion is a serious problem for the durability of reinforced concrete structures. These structures need to be protected from corrosion in a variety of exposure conditions ranging from atmospheric to continuous immersion in water or chemicals. One of the ways to protect reinforced concrete structures from corrosion is to use protective coatings. The surface barriers of non-degradable materials are able to slow down considerably the rate of deterioration of concrete structures and to overcome most durability problems associated with external attack. Design of durability of concrete structures with protective coatings needs to be established. In this paper a general framework for service life prediction and reliability evaluation of anticorrosion protective system (CPS), which is represented by protective surface barrier, concrete cover, and steel reinforcement itself of reinforced concrete structures, is presented. This approach is based on a reasonable understanding of the main degradation processes of all components ensuring protection ability and durability of concrete structures. The effect of repair of CPS components on extending the service life of a whole protective system is considered. Numerical example for reliability verification of CPS is also given.

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“…In reported experimental investigations, corrosion tests of bare rebars have been performed by exposing the specimens to the natural atmosphere (Allam et al 1994;Maslehuddin et al 1990) or a stainless steel tube filled with salty water and connected to a direct current ). The residual cross-sectional areas of the corroded specimens prepared by these two methods varied irregularly along the rebar length, which causes difficulty in clarifying the effects of different corrosion states and also in numerical model validation.…”

Section: Artificial Corrosion Processmentioning

confidence: 99%

Evaluation Method of Tensile Behavior of Corroded Reinforcing Bars Considering Radius Loss

Qiao

Nakamura

Yamamoto

et al. 2015

ACT

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The tensile behavior of plain round reinforcing bars corroded with various radius losses along their length is investigated experimentally and analytically. In the experiments, various corrosion topographies are simulated through accelerated electric corrosion tests using bare rebar specimens and different cathode arrangements. The tensile performance of the corroded specimens is then studied using a digital image processing method, showing that tensile degradation resulting from corrosion is closely related to radius loss variability. For the analysis, a numerical model based on the rigid body spring method incorporated with a truss network is proposed for the evaluation of tensile behavior in consideration of radius loss. Good agreement with the test data is obtained with the proposed model, which offers an accurate method of estimating the residual tensile capacity of corroded rebars.

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Influence of atmospheric corrosion on the mechanical properties of reinforcing steel

Cited by 41 publications

References 7 publications

Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

Modelling of Corrosion Protection for Reinforced Concrete Structures With Surface Coatings/Gelžbetoninių Konstrukcijų Su Paviršinėmis Dangomis Korozinės Apsaugos Modeliavimas

Evaluation Method of Tensile Behavior of Corroded Reinforcing Bars Considering Radius Loss

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