Studies on Greener Anticorrosive Coating to Steel Rebars with Waterborne Polyurethane Binders

Varalakshmi, R.; Ramaswamy, S. N.; Selvaraj, Rajeshkumar

doi:10.1007/s40996-020-00353-5

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…The results revealed that the mean ϕ corr of the first three SRC slabs with 1000 ppm, 2000 ppm, and 3700 ppm (FA-dose) WRep-A, except the control slab, is continuously changed from >90% corrosion probability region (i.e., HiC state) to <10% corrosion probability area (i.e., LoC state) with exposure time till 17 weeks or more, as illustrated in Fig. 4 [32], which has high efficiency to prevent the corrosion damage of the SRC slabs [33]. Also, the C−S−H makes it impenetrable by filling cracks and capillary pores of the concrete composites [18].…”

Section: Table 1 Physicochemical Properties Of the Water-repellents W...mentioning

confidence: 99%

“…5(a), although a slightly more noble mean ϕ corr is recorded for the slab with 2000 ppm WRep-B as compared with the 2000 ppm WRep-A slab, particularly after two months or more exposure times. Consequently, the use of 1000-2000 ppm of both the WRep-A and WRep-B in concrete composites enhances the formation of calcium silicate hydrate (C−S−H) gel as concrete pore sealer[32], which has high efficiency to prevent the corrosion damage of the SRC slabs[33]. Also, the C−S−H makes it impenetrable by filling cracks and capillary pores of the concrete composites[18].…”

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confidence: 99%

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The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

Roka,

Gautam,

Giri

et al. 2023

E3S Web Conf.

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Synthetic water repellent (WRep) generally blocks the ingress of corrosive factors like moisture and various gases to the reinforced steel (RS) surface through the concrete pores. Mixing such WReps in the concrete mix did not affect the anti-corrosive response to the RS infrastructures. Considering such consequences, the present work explored the uses of two synthetic water repellents (e.g., WRep-A & WRep-B) and plant-derived green inhibitors to control the corrosion stability level of the RS in the concrete matrix. The broader question of the work is to know whether the water-repellent affects the anti-degradation response to the steel in concrete at the same patterns as commonly practiced in the concrete matrix or differently when the cast reinforced concretes exposed to water-repellent suspension for a certain curing time. The concrete slab exposed for one week to the suspension mixture of 1000 ppm WRep-B+Mangifera indica (WRep-B+MILE) and 1000 ppm WRep-B+Psidium guajava (WRep-B+PGLE) extracts exhibited maximum anti-corrosive response, which is justified by corrosion potential shifting to a more positive potential zone where the reinforced steel corrosion damage state rated as <10% probability and anticipated more effective corrosion inhibiting activities compared to other concentrations used in this work.

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Section: Table 1 Physicochemical Properties Of the Water-repellents W...mentioning

confidence: 99%

mentioning

confidence: 99%

The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

Roka,

Gautam,

Giri

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…[ 23 ] The addition of the waterproofing chemicals did not impair the compression strength, but reduced absorption and penetration. [ 24 ] Notwithstanding the importance of the use of such synthetic waterproofing chemicals as an efficient inhibitor for controlling the corrosion damages of the RfC infrastructures, [ 25 ] which enhances the formation of calcium silicate hydrate (C−S−H) gel as concrete pore sealers. [ 26 ] However, most of the water proofing chemicals are primarily toxic, carcinogenic, and airborne pollutants.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies on the Anti‐Corrosive Action of Waterproofing Agent and Plant Extract to Steel Rebar

Somai

Giri

Roka

et al. 2023

Macromolecular Symposia

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Reinforcement of steel rebar in concrete infrastructure practices for a long time, mostly to improve tensile strength as well their service time. However, shortcomings related to damage of reinforced concrete (RfC) infrastructures becomes the business of corrosion researchers over the past few years, primarily from a safety and economic perspective. In general, the steel‐reinforced concrete (SRC) infrastructures are porous, and thence water as well different atmospheric pollutant gases penetrate it, causing the corrosion damages of the rebar, which shorten the prolonged existence of the RfC structures. The research aims to differentiate the efficacy and prosperity of waterproofing chemicals and methanol extract of Mangifera indica plant leaves for controlling the RfC susceptibility using a half‐cell corrosion potential measurement method following ASTM standard. The methanolic extract of M. indica leaves and waterproofing agents show high anti‐corrosion characteristics and can prescribe for the protection of the RfC infrastructures. The corrosion controlling performance level of 1000 and 2000 ppm M. indica extracts on the steel rebars in concrete has higher than the additions of alike concentration of both the water‐repellents depend on open‐circuit corrosion potential (CoP) shifting values to a noble direction.

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Corrosion characteristics of low-carbon steel anchor bolts in a carbonaceous mudstone environment

Qiu,

Fan,

et al. 2023

J. Cent. South Univ.

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Studies on Greener Anticorrosive Coating to Steel Rebars with Waterborne Polyurethane Binders

Cited by 5 publications

References 8 publications

The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

The anti-degradation consequences of water repellent-based inhibitors for controlling mild steel corrosion in concrete composite

Comparative Studies on the Anti‐Corrosive Action of Waterproofing Agent and Plant Extract to Steel Rebar

Corrosion characteristics of low-carbon steel anchor bolts in a carbonaceous mudstone environment

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