A new approach in mathematical modelling of cement hydration development

This paper describes development of a kinetic cement hydration model, which observes hydration rate relative to time d alpha/dt =f(T,I). The model est ablished makes it possible to observe hydration rate relative to time and n ot relative to the reaction degree alpha, d alpha/dt = f(T,alpha), which of fers a new approach to solving the cement hydration kinetics. The model ass umes several simultaneous processes sequentially governing individual hydra tion segments. The model has been tested by means of experimental alpha-t d ata obtained from the DSC plots by quantifying the content of Ca(OH)(2) fro m the cement-water system. The results indicate that the model established is valid and can be applied well. (C) 2000 Elsevier Science Ltd. All rights reserved.