Modeling, analysis of interaction effects of several chemical additives on the strength development of silicate cement

Abstract

The interaction effects of several chemical additives such as triethanolamine, triisopropanolamine, chloride and a type of monosaccharide on the strength development of silicate cement were investigated and were quantified by the design of experiment (DoE). Results showed triethanolamine was effective only for the 1d strength enhancement of cement. Triisopropanolamine, which weakened 1d, 3d strength and slightly enhanced 28d strength of cement when it was singly incorporated, was effective with the combination of monosaccharide and their interaction effects strongly contributed the strength enhancement on 3d and 28d. The effect of chloride on 3d strength of cement was strengthened by the interaction with monosaccharide. Monosaccharide can promote the effects of triisopropanolamine and chloride on 3d and 28d strength enhancement despite their interaction effects were determined by different concentration levels. It concluded that it was possible to replace chloride by the correctly formulated alkanolamine–monosaccharide combination to guarantee the strength enhancement of cement on all curing ages.