Inelastic neutron scattering investigation of hydrating tricalcium and dicalcium silicate mixture pastes: Ca(OH)2 formation and evolution of strength

Abstract

The hydration of controlled tricalcium and dicalcium silicate mixtures was investigated using inelastic neutron scattering. The amount of Ca(OH)2 produced by each mixture was quantified based on the vibrational mode at approximately 41 meV. The results of compressive strength testing correlate with the amount of Ca(OH)2 produced and with previous results from quasielastic neutron scattering. These results establish a link between hydration mechanics and the evolution of hydration products leading to desirable properties, such as strength.