Corrosion resistance and mechanism of steel rebar coated with three types of enamel

Tang, Fujian; Chen, Genda; Brow, Richard K.; Volz, Jeffery S.; Koenigstein, Michael L.

doi:10.1016/j.corsci.2012.02.024

Cited by 101 publications

(50 citation statements)

References 21 publications

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“…The strength variation of the slabs reinforced with CRE-coated bars is larger than that of the slabs with uncoated bars. This is likely attributed to the inconsistency of CRE coating on the surface of deformed bars as a result of gravity effect during enameling (Tang et al, 2012a).…”

Section: Cre Coating Effect On the Role Of Steel Bars In Static Behavmentioning

confidence: 99%

“…Zinc coating can delay steel bar from corrosion (Dong et al, 2012) but is usually more expensive than epoxy coating. Recently, chemically reactive enamel (CRE) coatings have been shown to significantly improve the corrosion resistance of steel bar (Tang et al, 2012a;2012b;. Due to their high corrosion resistance and low cost, they are promising for extensive applications in civil infrastructure particularly when built in corrosive environment.…”

Section: Corrosion-resistant Coatings Of Steel Barmentioning

confidence: 99%

“…The CRE coating used in this study consisted of 50% (in weight) commercial enamel and 50% reactive calcium silicate that was taken from Type I Portland cement (Tang et al, 2012a;2012b;. It was introduced to increase the bond strength between steel bar and concrete by increasing the surface roughness of coated steel bar for frictional effect or mechanical bonding and by promoting the chemical reaction of enamel with concrete for adhesive effect or chemical bonding (Wu et al, 2012;Yan et al, 2012).…”

Section: Materials and Mechanical Propertiesmentioning

confidence: 99%

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Static and dynamic behavior of concrete slabs reinforced with chemically reactive enamel-coated steel bars and fibers

Yan

Chen

et al. 2016

J. Zhejiang Univ. Sci. A

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Abstract:In this study, the effect of steel fibers coated with chemically reactive enamel (CRE) on the system response of concrete structures with reinforcing bars has been investigated for the first time. In particular, the ultimate strength, ductility, and failure mechanism of 24 reinforced concrete slabs were experimentally characterized under static and blast loads. CRE coating applied on steel bars reduced the crater area of slabs under blast loads by up to 20%; it slightly increased the strength of slabs and significantly reduced the strength degradation of slabs when increasingly deflected under static loads, making the slabs more ductile. CRE coating applied on steel fibers increased the strength of slabs by up to 16% under static loads. The influence of CRE coating applied on both steel fibers and bars may be taken into account by introducing a coating factor in the range of 0.57<β<1.0 in the American Concrete Institute (ACI) development length equation.

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Section: Cre Coating Effect On the Role Of Steel Bars In Static Behavmentioning

confidence: 99%

Section: Corrosion-resistant Coatings Of Steel Barmentioning

confidence: 99%

Section: Materials and Mechanical Propertiesmentioning

confidence: 99%

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Static and dynamic behavior of concrete slabs reinforced with chemically reactive enamel-coated steel bars and fibers

Yan

Chen

et al. 2016

J. Zhejiang Univ. Sci. A

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“…Since then, a series of systematic studies on deformed and smooth rebar have been conducted (Tang et al, 2012a;2012b;Wu et al, 2012;Yan et al, 2012;2016c). On the one hand, CRE-coated rebar has been demonstrated to have higher corrosion resistance than uncoated rebar in various applications (Tang et al, 2012a;2012b;. On the other, pullout tests with small specimens under static loading have proven that CRE coating can increase the bond strength of smooth rods in mortar by seven times (Yan et al, 2012) and the bond strength of deformed rebar in concrete by up to 32% (Wu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Blast response of full-size concrete walls with chemically reactive enamel (CRE)-coated steel reinforcement

Yan

Yin

et al. 2016

J. Zhejiang Univ. Sci. A

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Abstract:In this study, two full-size concrete walls were tested and analyzed to demonstrate the effectiveness of a chemically reactive enamel (CRE) coating in improving their mechanical behavior under blast loading: one with CRE-coated rebar and the other with uncoated rebar. Each wall was subjected in sequence to four explosive loads with equivalent 2, 4, 6-trinitrotoluene (TNT) charge weights of 1.82, 4.54, 13.6, and 20.4 kg. A finite element model of each wall under a close-in blast load was developed and validated with pressure and strain measurements, and used to predict rebar stresses and concrete surface strain distributions of the wall. The test results and visual inspections consistently indicated that, compared with the barrier wall with uncoated reinforcement, the wall with CRE-coated rebar has fewer concrete cracks on the front and back faces, more effective stress transfers from concrete to steel rebar, and stronger connections with its concrete base. The concrete surface strain distributions predicted by the model under various loading conditions are in good agreement with the crack patterns observed during the tests.

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Properties of Hardened Concrete

2022

Advanced Concrete Technology

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Corrosion resistance and mechanism of steel rebar coated with three types of enamel

Cited by 101 publications

References 21 publications

Static and dynamic behavior of concrete slabs reinforced with chemically reactive enamel-coated steel bars and fibers

Static and dynamic behavior of concrete slabs reinforced with chemically reactive enamel-coated steel bars and fibers

Blast response of full-size concrete walls with chemically reactive enamel (CRE)-coated steel reinforcement

Properties of Hardened Concrete

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