Abstract:Sulfate optimisation of the aluminate phase (C 3 A) in Portland-limestone cements (PLCs) is critical for improving their hydration performance. This study investigates the changes in the sulfate attack performance of an undersulfated interground PLC (14.6% limestone) through the addition of gypsum. Isothermal calorimetry is used to measure the early-age hydration kinetics to optimise the sulfur trioxide content of the PLC. Sulfate expansion and strength loss of the undersulfated and optimised PLC in combinatio… Show more
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