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Published on: January 25, 2019
The Effect of Various Grinding Aids on the Properties of Cement and Its Compatibility with Acrylate-Based
Ewa Kapeluszna1, Łukasz Kotwica1
1Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30-059 Krakow, Poland.
Abstract:
The influence of grinding aids (pure triethanolamine and ethylene glycol) on the properties of cements, their compatibility with an acrylate-based superplasticizer and the rheological parameters of mortars were investigated. The presence of surfactants influences the standard properties of cements and the effectiveness of the superplasticizer. The results of the heat of hydration and setting time measurements indicate a delay in the hydration process and an increase in the induction period duration of the surfactant-doped pastes, in relation to the reference sample without grinding aids. Triethanolamine increases early-age compressive strength; the effect was observed for both standard and superplasticizer-containing mortars. The presence of grinding aids decreases the slump flow of mortars and increases rheological parameters such as yield stress (τ0) and viscosity (η).
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