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A platform for research: civil engineering, architecture and urbanism
Electrochemical monitoring of corrosion of steel in microsilica cement pastes
Abstract The corrosion behaviour of steel in hardened cement pastes containing various proportions of microsilica and sodium chloride has been studied by corrosion potential and linear polarisation measurements. Replacement of increasing proportions of Portland cement with microsilica in pastes of constant total chloride content and water content caused the ratio of free chloride ion concentration to hydroxyl ion concentration in the pore water to increase. This tended to destabilise the passivity of steel during the early stages of hydration but the effect became less significant as curing progressed. It is suggested that the growth of anodic pits may be restrained in microsilica cement pastes owing to the fine pore structure of the material which limits the mobility of chloride ions near the surface of embedded steel.
Electrochemical monitoring of corrosion of steel in microsilica cement pastes
Abstract The corrosion behaviour of steel in hardened cement pastes containing various proportions of microsilica and sodium chloride has been studied by corrosion potential and linear polarisation measurements. Replacement of increasing proportions of Portland cement with microsilica in pastes of constant total chloride content and water content caused the ratio of free chloride ion concentration to hydroxyl ion concentration in the pore water to increase. This tended to destabilise the passivity of steel during the early stages of hydration but the effect became less significant as curing progressed. It is suggested that the growth of anodic pits may be restrained in microsilica cement pastes owing to the fine pore structure of the material which limits the mobility of chloride ions near the surface of embedded steel.
Electrochemical monitoring of corrosion of steel in microsilica cement pastes
Page, C. L. (author) / Havdahl, J. (author)
1985
Article (Journal)
English
Electrochemical monitoring of corrosion of steel in microsilica cement pastes
| Springer Verlag | 1985
Behavior of composite cement pastes containing microsilica and fly ash at elevated temperature
| British Library Online Contents | 2013
Behavior of composite cement pastes containing microsilica and fly ash at elevated temperature
| Online Contents | 2013