INFLUENCE OF GREEN CORROSION INHIBITOR ON REINFORCED CONCRETE ATTACKED BY MAGNESIUM SULPHATE
Keywords:Ad hoc networks, Disaster mitigation, Network coding, Reducing broadcast redundancy, Sensor nodes, Sulphate attack, concrete resistivity, green inhibitor, corrosion
AbstractSulphate attack is one of the phenomena that may cause gradual but severe damages to concrete structures durability. Sulphate attack is due to a series of chemical reactions between sulphate ions and principle components of the cement paste microstructure. In this work the effects of 1.5% and 4.5% MgSO4 additions on concrete durability of 0.45 and 0.65 water/cement ratios (w/c) and the residual effects on corrosion of steel reinforcement were investigated using concrete resistivity. The results shows that 2% addition of Bambusa arundinacea green inhibitor improved the concrete resistivity of MgSO4 contamination concrete by 54% and 64% for 0.45 and 0.65w/c ratios respectively. Thus comparatively, Bambusa arundinacea inhibitor performed far better than Calcium nitrite, Ethanolamine inhibitors and even the non-contaminated control sample. This confirmed a linear relationship between concrete resistivity and probability of corrosion in concrete. Concrete resistivity has proven to be effective parameter for the estimation of the risk of steel reinforcement in concrete.
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