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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Investigations on the Sulfate Resistance of High-Lime Fly ash Incorporating PC-fa Mortars
Author(s): T. Y. Erdogan, M. tokyay, and K. Ramyar
Publication: Special Publication
Appears on pages(s): 271-280
Keywords: aluminum oxide; anhydrite; durability; fly ash; free lime; lime; mortars (material); sulfate resistance; Materials Research
Abstract:Sulfate damage in concrete is a result of the reaction between C 3A in portland cement, which produces the hydration of calcium silicates and water soluble sulfates. The damage is reduced or overcome by replacing some of the cement with low-lime fly ash. High-lime fly ashes usually contain some free lime, anhydrite, iron oxide, and C 3A contents of PC-fa mortars and their sulfate expansions determined according to ASTM C 452 showed that, beside the sulfate resistance factor R, free CaO/Fe 2O 3 and C 3A + free alumina/free CaO ratios of the PC-fa mixes containing high fly ashes can be used to determine their sulfate susceptibility.
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