Corrosion Behavior and Durability of Various Cements and Pozzolans » książka
Corrosion Behavior and Durability of Various Cements and Pozzolans
ISBN-13: 9783838338354 / Angielski / Miękka / 2010 / 168 str.
Corrosion Behavior and Durability of Various Cements and Pozzolans
ISBN-13: 9783838338354 / Angielski / Miękka / 2010 / 168 str.
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This work examines the corrosion behavior of reinforcing steel (RC) embedded in concrete mixes of various types by incorporating both Ordinary Portland Cement (Type I) and Sulfate-Resistance Portland Cement (Type V) and Blends with Fly Ash (PFA) or Slag (GGBS). The RC specimens were exposed to wet-dry cycles of chloride and/or sulfate solutions. Theory predicts that under such conditions the electrode potentials of the steel can suffer the formation of anode and cathode regions that depend on cement type and the local environment, so localized corrosion may occur. The final results in this book concludes that using two concrete types in the same structure will lead to the preferential formation of anode and cathode sites. Moreover, this has implications for the durability of real structures whereas the steel, either through design or repair, is embedded in more than one concrete mix type. Furthermore, the results showed that green concrete - containing either 30% Pozzolan or 70% Slag - had the best overall quality, durability and better performance than Portland cement concrete. This book will help professionals in Corrosion Control, Green Building and Sustainable Development.
This work examines the corrosion behavior of reinforcing steel (RC) embedded in concrete mixes of various types by incorporating both Ordinary Portland Cement (Type I) and Sulfate-Resistance Portland Cement (Type V) and Blends with Fly Ash (PFA) or Slag (GGBS). The RC specimens were exposed to wet-dry cycles of chloride and/or sulfate solutions. Theory predicts that under such conditions the electrode potentials of the steel can suffer the formation of anode and cathode regions that depend on cement type and the local environment, so localized corrosion may occur. The final results in this book concludes that using two concrete types in the same structure will lead to the preferential formation of anode and cathode sites. Moreover, this has implications for the durability of real structures whereas the steel, either through design or repair, is embedded in more than one concrete mix type. Furthermore, the results showed that green concrete - containing either 30% Pozzolan or 70% Slag - had the best overall quality, durability and better performance than Portland cement concrete. This book will help professionals in Corrosion Control, Green Building and Sustainable Development.
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