Sulfate resistance of cementitious systems with mineral additives

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2002
Dilek, Faruk Tuncer
Sulfate resistance of mortars containing limestone, trass, granulated blast furnace slag and fly ash has been evaluated using ASTM C 1012 test procedure. Prismatic and cubic mortar specimens have been stored in concentrated sodium sulfate and a mixture of sodium sulfate + magnesium sulfate solutions. Relative deterioration of the specimens has been determined by length change, weight change, strength and visual examination. From similar mixtures, cement paste specimens were prepared and structure/morphology of hydration products were studied with X-ray diffraction method and scanning electron microscopy at certain ages. In the experimental program, three laboratory produced cements, which have different C3A contents, were used together with standard sand in preparing the mortar mixtures. Mineral additives, depending on type of additive, were mixed in different replacement ratios with cements. Consequently, structure of hydration products at different ages, then- relative sulfate resistance was studied and some limitations and mathematical relations to estimate sulfate resistance were proposed.

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Citation Formats
F. T. Dilek, “Sulfate resistance of cementitious systems with mineral additives,” Ph.D. - Doctoral Program, Middle East Technical University, 2002.