期刊
CHEMICAL PHYSICS
卷 326, 期 2-3, 页码 381-389出版社
ELSEVIER
DOI: 10.1016/j.chemphys.2006.02.016
关键词
quasielastic neutron scattering; inelastic neutron scattering; tricalcium silicate; cement
The hydration of Mg-stabilized triclinic and monoclinic tricalcium silicate samples were studied using quasielastic neutron scattering to follow the fixation of hydrogen into the reaction products and by applying hydration models to the data. The quantity of Ca(OH)(2) produced during hydration was also determined using inelastic neutron scattering. The monoclinic form was found to be intrinsically less reactive that the triclinic form. The monoclinic form was also confirmed to produce more product than the triclinic form after 50 h, a process found to occur through a longer, rather than earlier, nucleation and growth regime. Results indicated an increase in the permeability of the hydration layer product relative to the triclinic form and the increase in the length of the nucleation and growth regime was thus attributed to an alteration in morphology or structure of the hydration layer product, extending the time for diffusion limited mechanics to be reached. (c) 2006 Elsevier B.V. All rights reserved.
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