In situ quasi-elastic neutron scattering study of the hydration of tricalcium silicate
We report on the novel application of quasi-elastic neutron spectroscopy to study the reaction mechanism between tricalcium silicate and water. The in situ data taken at a series of fixed temperatures varying from 10 to 40 C show that the amount of free water in the system remains relatively constant for an initial period, ranging from 1 h at 40 C to 16 h at 10 C. This is followed by an exponential decrease in the amount of free water that crosses over to a diffusion-limited behavior for later times. Fits to an Avrami type behavior allow us to determine an activation energy for the hydration process on the order of 30 kJ/mol.
FitzGerald, S.A., D.A. Neumann, J.J. Rush, et al. 1998. "In situ quasi-elastic neutron scattering study of the hydration of tricalcium silicate." Chemistry of Materials 10(1): 97-402.
American Chemical Society
Chemistry of Materials
Physics and Astronomy