Anticorrosive Effect of Electrochemical Manganese Dioxide By-Products in Reinforced Concrete

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The present study investigates the effect of Electrochemical Manganese Dioxide (EMD) by-product as a replacement of cement, on durability of concrete and the corrosion protection of reinforcement steel. Reinforced cement mortars were partially immersed in 3.5% w. w NaCl solution and they were exposed to atmospheric conditions for a period of 24 months. Additions of 5% and 10% EMD byproduct were tested. The following techniques were used: half-cell potential measurements (HCP), linear polarization Resistance (LPR), mass loss of reinforcement steel, determination of carbonation depth of mortars, testing of compressive strength, total and open porosity measurements. Based on the up-to-now results of this study, the specimens with addition 10% appear smaller corrosion currents and mass loss of steel than reference specimens. Also, the compressive strength with 10% additive is appeared to be slightly higher from the reference specimens.

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Chousidis, N. , Rakanta, E. , Ioannou, I. and Batis, G. (2015) Anticorrosive Effect of Electrochemical Manganese Dioxide By-Products in Reinforced Concrete. Journal of Materials Science and Chemical Engineering, 3, 9-20. doi: 10.4236/msce.2015.35002.


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