Title

In situ quasi-elastic neutron scattering study of the hydration of tricalcium silicate

Abstract

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.

Publisher

American Chemical Society

Publication Date

1-19-1998

Publication Title

Chemistry of Materials

Department

Physics and Astronomy

Document Type

Article

DOI

10.1021/cm970564a

Language

English

Format

text

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