By monitoring the free induction decay and spin-echo envelope (acquired wit
h 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 wate
r phase, observed for the first time in hydrating cement, is discussed.