Materiales de Construcción, Vol 52, No 268 (2002)

Evolution of the hydration in cements with additions


https://doi.org/10.3989/mc.2002.v52.i268.317

V. L. Bonavetti
Departamento de Ingeniería Civil - Facultad de Ingeniería - Universidad Nacional del Centro, Argentina

V. F. Rahhal
Departamento de Ingeniería Civil - Facultad de Ingeniería - Universidad Nacional del Centro, Argentina

E. F. Irassar
Departamento de Ingeniería Civil - Facultad de Ingeniería - Universidad Nacional del Centro, Argentina

Abstract


In this paper, the hydration mechanism of portland cement pastes with limestone, quartz and natural pozzolan (80/20 weight) was analized. The techniques used were nonevaporable water content, pozzolanic activity and X-ray diffraction. Results show that filler effect increases initially the amount of hydration products in all pastes. For limestone pastes, the dilution effect is significant at long time, for quartz and pozzolan pastes the dilution effect was lower due to the contribution of the pozzolanic reaction.

Keywords


limestone ; quartz; pozzolan; non evaporable water; pozzolanic activity; XRD

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