Prevention of corrosion of steel reinforcement in concrete

Patel, Rahul

doi:10.1063/1.5127159

Cited by 4 publications

(1 citation statement)

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“…Concrete is the most widely and available materials used in the production of buildings and other engineering structures [1]. globally, corrosion of reinforcement bars, is the major causes of failure in reinforced concrete (RC) structures, more especially in aggressive environments [2], [3]. Mechanically, reinforced concrete is not only characterized with combination of materials, but also in chemical perspective, why because hydrated cement provides to the reinforcement bar an excellent protection against corrosion [4], [1].…”

Section: Introductionmentioning

confidence: 99%

Effects of Corrosion to the Performance of Steel Reinforcement Embedded in Concrete under Different Aggressive Environments

Almustafa¹

2020

IJMTST

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The corrosion of reinforcement steel bars in concrete has been established as the major factor causing widespread degradation of concrete structures. Corrosion of reinforcement in concrete leads to reduction of good bonding between steel and concrete, decrease of steel cross-sectional area, cracking and loss of serviceability. This paper investigates the behavior and Performance of reinforcement bar embedded in concrete structure under a variety of aggressive environments. The study used 16 mm diameter reinforcement bars embedded in concrete with a uniform cover of 50 mm in 200 mm x 200 mm x 750 mm concrete beam, the curing period of concrete is 28 days. After completion of 28 days’ moisture curing period, the beam was loaded in flexure causing cracking of the concrete, thereby exposing the steel reinforcements. The cracked reinforced concrete beams were then immersed in different aggressive solutions of H2So4 (Sulfuric Acid), HCl (hydrochloric acid), HNO3 (hydrogen trioxonitrate), NaOH (sodium hydroxide) and NaCl (Sodium Chloride) for a duration of six months. At the end of this curing period, the embedded steel reinforcement was removed and cleaned off the attached concrete, and then tested for change in strength, diameter, and weight loss. The results obtained shows that corrosion affect steel reinforcement in concrete under HCl, H2SO4 and HNO3 with 15%,13% and 11% very high rate change in strength respectively. Also, the NaCl and HCl, were recorded with 15% and 11% very high rate effects on reduction/addition in diameter of steel reinforcement respectively. And finally, the HCl, and H2SO4 were recorded with 24.1% having the same and very high rate effects on reduction in weight (weight loss).

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Section: Introductionmentioning

confidence: 99%