The effect of heating and cooling on the bond strength between concrete and steel reinforcement bars with and without epoxy coating

Lee, Jae-Sung; Sheesley, Evan; Jing, Yuxiang; Xi, Yunping; Willam, Kaspar

doi:10.1016/j.conbuildmat.2018.05.128

Cited by 36 publications

(18 citation statements)

References 7 publications

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“…Based on the results of using an anticorrosion coating in OPCC, coating technology is a practical way to alleviate rebar corrosion in harsh environments. [29][30][31] However, the feasibility of coating technology in solving steel corrosion in MOCC remains to be verified. Therefore, one of the highlights of this paper is that it provided favorable support for its feasibility in quantitative analysis.…”

Section: Discussionmentioning

confidence: 99%

“…The coating can provide protection to the rebar in four aspects: barrier protection, electrochemical action, passivation action and self-repairing action. [29][30][31]…”

Section: Rebar Fabricationmentioning

confidence: 99%

“…Based on the use of an anticorrosion coating for OPCC, coating technology was found to be a practical way to alleviate rebar corrosion. [29][30][31] This paper presents a study on the reinforcement corrosion in MOCC in which the practicality of coated rebar in MOCC was investigated. In addition, reinforced concrete based on ordinary Portland cement is unserviceable in a salt lake environment after more than 3-5 years.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the use of an anticorrosion coating for OPCC, coating technology was found to be a practical way to alleviate rebar corrosion 29–31 . This paper presents a study on the reinforcement corrosion in MOCC in which the practicality of coated rebar in MOCC was investigated.…”

Section: Introductionmentioning

confidence: 99%

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Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

Gong

Wang

Zhang

et al. 2020

Structural Concrete

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An effective approach to make better use of the salt-brine resistance of magnesium oxychloride cement concrete (MOCC) and reduce "magnesium damage" (the concentrate of magnesium resources) that destroys the ecological balance in salt lake areas is to apply MOCC widely. However, the first problem is the high chloride ion content in MOCC, which corrodes reinforcement easily. Concrete cover depth, the experimental environment, and surface treatment of rebar were considered factors study in reinforcement corrosion in MOCC. Based on the tests conducted, a time-dependent model for reinforcement corrosion in MOCC was proposed, and its life time (initial corrosion and initial cracking time) was calculated and verified in tests. The results showed that proper coating could inhibit reinforcement corrosion and increase the service life of rebar significantly. Further, the salt lake environment had little influence on reinforcement corrosion in MOCC. For exposed rebar in MOCC, the larger the concrete cover depth, the more serious the reinforcement corrosion, while, for coated rebar, the converse was true. All cases of reinforcement corrosion in MOCC conformed to the logarithmic-type time-dependent model before concrete cracking. Accordingly, reinforcement corrosion in MOCC and the excess of magnesium resources are expected to be solved.

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Section: Discussionmentioning

confidence: 99%

“…The coating can provide protection to the rebar in four aspects: barrier protection, electrochemical action, passivation action and self-repairing action. [29][30][31]…”

Section: Rebar Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

Gong

Wang

Zhang

et al. 2020

Structural Concrete

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“…Several polymer additives such as latex, natural rubbers, epoxy resins, and thermo-plastic polymers are added to normal concrete to produce chemically resistant, impermeable, and durable concrete [2]. Generally, polymer concrete is produced by using polymer as a partial substitute for cement [3,4]. Polymer concretes are mainly used in areas where durability is a major concern [5,6,7].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Properties of Epoxy-Resin-Bonded Cement Concrete Containing Sea Sand for Use in Unreinforced Concrete Applications

Natarajan

Pillai²,

Sophia

2019

Materials

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This paper deals with the experimental studies conducted on the effects of using sea sand on the properties of polymer concrete modified using epoxy resin. The physical properties including workability, mechanical properties, and durability properties were evaluated as a function of sea-sand substitution. The results obtained behave as strong evidence for the feasibility of using sea sand as fine aggregate to solve the problem associated with the exhaustion of natural aggregates when used in combination with epoxy polymer. A clear understanding of the behavior of polymer concrete with sea sand as aggregate was obtained through some preliminary investigations. The test results showed a significant improvement in the compressive and flexural strength due to the sea-sand substitution in polymer concrete. Resistance to the water intrusion was also improved for the concrete mixes due to the inclusion of epoxy resin. The quality and the integrity of the concrete were also improved,as evident from the SEM analysis and infrared (IR) spectroscopy, and the results function as solid basis for the use of sea-sand polymer-modified concrete for practical applications. Results also show that 15% replacement of fine aggregate by sea sand in air-cured polymer concrete exhibited enhanced strength and durability properties; thus, the produced concrete can be an effective material for unreinforced concrete applications.

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Bond durability of basalt‐fiber‐reinforced‐polymer bars embedded in lightweight aggregate concrete subjected to freeze–thaw cycles

Deng

Wang

Sun

et al. 2021

Structural Concrete

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In recent years, basalt-fiber-reinforced-polymer (BFRP) bars have become popular to replace steels. However, little is known about the performance of BFRP bars inserted in lightweight aggregate concrete (LWAC), especially the bonding performance under freeze-thaw (FT) cycles. In this study, a bond strength test was conducted for BFRP bars embedded in LWAC after FT cycles. BFRP bars, epoxy-coated bars, and steels were tested for comparison purposes. The test parameters are the bar type, compressive strength of the LWAC, and FT cycles; 108 specimens were subjected to 0, 15, 30, and 50 FT cycles. Moreover, the bond strength models of the three types of bars were fitted to LWAC. The test results prove that the number of FT cycles significantly affects the bonding performance of the bar embedded in LWAC. The results also show that the bond strength prediction of the fitting model considering the FT cycle effect is consistent with the experimental results. K E Y W O R D S basalt-fiber-reinforced-polymer bars, bond, epoxy-coated steel bars, freeze-thaw cycles, lightweight aggregate concrete

show abstract

The effect of heating and cooling on the bond strength between concrete and steel reinforcement bars with and without epoxy coating

Cited by 36 publications

References 7 publications

Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

Experimental Investigations on the Properties of Epoxy-Resin-Bonded Cement Concrete Containing Sea Sand for Use in Unreinforced Concrete Applications

Bond durability of basalt‐fiber‐reinforced‐polymer bars embedded in lightweight aggregate concrete subjected to freeze–thaw cycles

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