Mineral Admixtures in Mortars. Quantification of the Physical Effects of Inert Materials on Short-Term Hydration

This article reports on the second part of an overall project undertaken to develop mix design rules for concrete containing different kinds of mineral admixtures. In the first part of the study, it was confirmed that an inert mineral admixture, like quartz powder, enhanced the short-term hydration of cement. This second part describes the development of an empirical model, based on semiadiabatic calorimetry measurements. An efficiency function is used to quantify the effect of mineral admixture on the heterogeneous nucleation effect at short hydration time. This efficiency function is independent of time, independent of fineness, and independent of the type of mineral admixture. One application of the model is the prediction of the degree of hydration of cement which, coupled with Powers' law, could lead to prediction of the short-term compressive strength of mortars.

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  • Authors:
    • Cyr, Martin
    • Lawrence, Philippe
    • Ringot, Erick
  • Publication Date: 2005-4


  • English

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  • Accession Number: 01000522
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 2 2005 8:45AM