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Early hydration of portland cement with crystalline mineral additions

Rahhal, V. / Talero, R.

AbstractThis research presents the effects of finely divided crystalline mineral additions (quartz and limestone), commonly known as filler, on the early hydration of portland cements with very different mineralogical composition. The used techniques to study the early hydration of blended cements were conduction calorimeter, hydraulicity (Fratini's test), non-evaporable water and X-ray diffraction. Results showed that the stimulation and the dilution effects increase when the percentage of crystalline mineral additions used is increased. Depending on the replacement proportion, the mineralogical cement composition and the type of crystalline addition, at 2 days, the prevalence of the dilution effect or the stimulation effect shows that crystalline mineral additions could act as sites of heat dissipation or heat stimulation, respectively.

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Early hydration of portland cement with crystalline mineral additions

Rahhal, V. / Talero, R.

AbstractThis research presents the effects of finely divided crystalline mineral additions (quartz and limestone), commonly known as filler, on the early hydration of portland cements with very different mineralogical composition. The used techniques to study the early hydration of blended cements were conduction calorimeter, hydraulicity (Fratini's test), non-evaporable water and X-ray diffraction. Results showed that the stimulation and the dilution effects increase when the percentage of crystalline mineral additions used is increased. Depending on the replacement proportion, the mineralogical cement composition and the type of crystalline addition, at 2 days, the prevalence of the dilution effect or the stimulation effect shows that crystalline mineral additions could act as sites of heat dissipation or heat stimulation, respectively.

Early hydration of portland cement with crystalline mineral additions

Rahhal, V. / Talero, R.

AbstractThis research presents the effects of finely divided crystalline mineral additions (quartz and limestone), commonly known as filler, on the early hydration of portland cements with very different mineralogical composition. The used techniques to study the early hydration of blended cements were conduction calorimeter, hydraulicity (Fratini's test), non-evaporable water and X-ray diffraction. Results showed that the stimulation and the dilution effects increase when the percentage of crystalline mineral additions used is increased. Depending on the replacement proportion, the mineralogical cement composition and the type of crystalline addition, at 2 days, the prevalence of the dilution effect or the stimulation effect shows that crystalline mineral additions could act as sites of heat dissipation or heat stimulation, respectively.

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Title:

Early hydration of portland cement with crystalline mineral additions

Contributors:

Rahhal, V. (author) / Talero, R. (author)

Published in:

Cement and Concrete Research ; 35 ; 1285-1291

Publication date:

2004-12-08

Size:

7 pages

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2004.12.001

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Calorimetry , Hydration , Kinectics , Filler , X-ray diffraction

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