Early hydration of portland cement with crystalline mineral additions

Journal Article · Fri Jul 01 04:00:00 EDT 2005 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2004.12.001· OSTI ID:20706221

Rahhal, V ^[1]; Talero, R ^[2]

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1. Departamento de Ingenieria Civil, Universidad Nacional del Centro de la Provincia de Buenos Aires, Av. Del Valle 5737, B7400JWI Olavarria (Argentina)
2. Instituto Eduardo Torroja (CSIC), Serrano Galvache s/n, Madrid 28033 (Spain)

This 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.

• OSTI ID: 20706221
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 7 Vol. 35; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALORIMETERS
CALORIMETRY
HYDRATION
LIMESTONE
PORTLAND CEMENT
QUARTZ
STIMULATION
X-RAY DIFFRACTION