The X-ray diffraction analysis and mercury intrusion porosimetry were employed to investigate the hydration process of calcium sulfoaluminate (CSA)-portland cement blends with mass concentration, and mass ratios ranging from 7.7 to 22.0%, 1.0 to 6.5 and 0.5 to 1.2, respectively. Owing to the hydration of adequate contents and the generation of sufficient quantities of expansive ettringite, blends with amounts as well as and values comprised between 17.6 and 22.0%, 1.0 and 1.7, 0.5 and 1.0, respectively, showed high-early strengths and low drying-shrinkage when compared to normal portland cements. The formation of expansive ettringite was associated with concentrated pore distributions and most preferred pore radii ranging from either 47 to 225 or 367 to 896 nanometers, depending on both and ratios.
Hydration properties of calcium sulfoaluminate portland cement blends,
TELESCA, ANTONIOWriting – Review & Editing
;VALENTI, Gian LorenzoWriting – Review & Editing
2009-01-01
Abstract
The X-ray diffraction analysis and mercury intrusion porosimetry were employed to investigate the hydration process of calcium sulfoaluminate (CSA)-portland cement blends with mass concentration, and mass ratios ranging from 7.7 to 22.0%, 1.0 to 6.5 and 0.5 to 1.2, respectively. Owing to the hydration of adequate contents and the generation of sufficient quantities of expansive ettringite, blends with amounts as well as and values comprised between 17.6 and 22.0%, 1.0 and 1.7, 0.5 and 1.0, respectively, showed high-early strengths and low drying-shrinkage when compared to normal portland cements. The formation of expansive ettringite was associated with concentrated pore distributions and most preferred pore radii ranging from either 47 to 225 or 367 to 896 nanometers, depending on both and ratios.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
