Journal of the American Ceramic Society, Vol.83, No.3, 623-627, 2000
Monitoring of hydration of white cement paste with proton NMR spin-spin relaxation
By monitoring the free induction decay and spin-echo envelope (acquired with the Meiboom-Gill modified Carr-Purcell pulse sequence), during hydration of white cement paste, information about growth patterns of various cements is obtained. In particular, the secondary hydration water is characterized through direct observation, and a relatively immobile, near solidlike water phase, observed for the first time in hydrating cement, is discussed.