Significance of Chloride Salt Type and Sulfate Salt on Chloride Transport Mechanism of Concrete in the Presence of Corrosion Inhibiting Admixtures

Das, Jyotish Kumar; Pradhan, Bulu

doi:10.2139/ssrn.4221794

Cited by 1 publication

(1 citation statement)

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“…Organic steel bar rust inhibitors can use the porous structure of concrete through the concrete pores, with gas-liquid dual-phase diffusion to reach the surface of the steel bar, forming a compelling protective film, so the organic steel bar rust inhibitor can not only be mixed into the raw material of concrete for use but also can be directly coated on the concrete surface, through the spontaneous penetration process to reach the surface of the steel bar. Finally, the surface of the steel bar is formed into a film to realize the protection of the steel bar, which is the penetration (migration) type rust inhibitor [1][2][3]. Cortec is the first company in the United States to combine gas phase corrosion inhibitors with other organic rust inhibitors to protect reinforced concrete, regarded as the most promising technology in concrete structure repair [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Corrosion-inhibiting Admixtures on Chloride Corrosion Resistance of Concrete

Zeng,

Sun,

Sun

et al. 2024

J. Phys.: Conf. Ser.

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Compared to the different types of rust inhibitors, The effects of the internal and external coating corrosion inhibitors on the corrosion resistance of concrete were studied. The impact of the mixed rust inhibitor on the working performance, compressive strength and chloride ion permeability coefficient of concrete was investigated. The results show that the working performance, late mechanical properties, and resistance to chlorine salt erosion of concrete are better than those of reference concrete after adding the anti-rust agent. Comparing the effects of 2% and 4% internal rust inhibitors on the corrosion resistance of chloride ions, based on the control group, the chloride ion diffusion coefficient of concrete with 2% and 4% rust inhibitors decreases to the original 15.1% and 37.0%, respectively. Concrete’s chloride ion diffusion coefficient with external rust inhibitor decreases to 62.5%. In addition, the internal corrosion inhibitor has a specific water-reducing component, which reduces the water consumption of concrete and improves the compactness of concrete itself, thus improving the corrosion resistance of concrete.

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