Kinetics: the Induction period

This lecture by Professor Karen Scrivener explores the kinetics of the induction period in cement chemistry, focusing on the underlying mechanisms, heat evolution, and the three distinct periods: induction, acceleration, and deceleration. Different theories regarding the induction period, such as the protective membrane layer and nucleation theory, are discussed. The study delves into dissolution as negative growth, the effect of annealing on alite, and the evolution of dissolution rate. The lecture concludes with a summary highlighting the absence of evidence for a protective layer and the effectiveness of dissolution as a function of undersaturation, supported by geochemistry.