Improving Sustainability through Corrosion Resistance of Reinforced Concrete by Using a Manufactured Blended Cement and Fly Ash

Campos Silva, Héctor Gerardo y Garcés Terradillos, Pedro y Zornoza, Emilio y Mendoza Rangel, José Manuel y Castro Borges, Pedro y Juárez Alvarado, César Antonio (2018) Improving Sustainability through Corrosion Resistance of Reinforced Concrete by Using a Manufactured Blended Cement and Fly Ash. Sustainability, 10 (6). pp. 1-15. ISSN 2071-1050

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Resumen

Abstract: The objective of this paper is to report the improvement of sustainability through the increase of reinforced concrete corrosion resistance by using a blended cement and fly ash. Different reinforced concrete mixtures were prepared with partial substitution of a manufactured blended cement with fly ash from a thermal power plant in Andorra (Teruel, Spain). These mixtures were manufactured using three different water/cement ratios (0.46, 0.59, and 0.70) and threesubstitutionpercentagesofcementbyflyash(0%,25%,and50%). Thetestcylindersunderwent an accelerated carbonation process and exposure to different chloride levels, with the aim of characterizing the corrosion level of the different mixtures. The addition of local FA matched or even improved the resistance of the control mixture against carbonation and chlorides. Keywords: fly ash; corrosion; durability

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