Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	Microwave Studies of Portland Cement Hydration [PDF]
AUTHORS	J.-P. Reboff 1981 16 1 25-30
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Abstract Portland cement hydration involves various mechanisms which are not yet perfectly known in all their details. The lump reaction leads to the formation of hydrates from anhydrous material and tempering water, and the resulting change in dielectric behavior is amenable to routine microwave measurements. A complete microwave investigation on fresh pastes of tricalcium silicate, the principal hydraulic component of Portland cement was performed. Three successive mechanisms have been confirmed or revealed Water adsorption on the surface or in the mass of cement grains. Dissolution of ions and formation of a transient ionic solution. Decrease of the moisture content and formation of hydrates.