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Title |
Corrosion Resistance of Blended Concrete and Its Application to Crack Healing
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Keywords |
혼합 콘크리트 ; 자기균열치유 ; 인공균열치유 ; 전기화학적 전착 ; 부식 blended concrete ; autogenous crack healing ; artificial crack healing ; electrochemical deposition ; corrosion |
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Abstract |
In this study, electro-deposition method was applied to heal cracks in various blended concrete. The performance of the method was indirectly monitored by measuring impressed voltage, electrolyte, galvanic current monitoring, linear polarization resistance, and directly by image analysis of the cracks. The indirect and direct monitoring values are compared to develop guidelines for relating the indirect measures to actual crack healing. As a result, It was found that impressed voltage was convergence to 2.9V after 20000 minutes. From the galvanic current test results of artificial crack healing, the corrosion resistance showed that the order of 0.4 > 0.6 > 0.5 water to cement ratio. Furthermore, in view of binder, the corrosion resistance order was calculated OPC > 60%GGBS > 10%SF > 30%PFA. Finally, It was found that 76.47% of healed crack surface calculated from the artificial crack healing technique using electrochemical deposition method.
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