engleski

Hydration of B2O3-stabilized α′- and β-modifications of dicalcium silicate

Paste hydration of B2O3-stabilized α′- and β-C2S was studied at reaction times between 5 hours and 28 days. Data on the degree of hydration determined by X-ray diffraction at different ages were used to evaluate hydration rate constants. The higher rate of α′- C2S hydration resulted in the higher compressive strengths of the α′-C2S-alite paste as compared with the β-C2S-alite paste. Differences in crystal imperfections of the two C2S-polymorphs were determined using electron microscopy and electron diffraction

cement ; hydration ; dicalcium silicate

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