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Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete

Autor
Salvador, R.; Pialarissi Cavalaro, S.H.; Cincotto, M.; de Figueiredo, A.D.
Tipus d'activitat
Article en revista
Revista
Cement and concrete research
Data de publicació
2016-11
Volum
89
Pàgina inicial
230
Pàgina final
248
DOI
https://doi.org/10.1016/j.cemconres.2016.09.002 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/90036 Obrir en finestra nova
URL
http://www.sciencedirect.com/science/article/pii/S0008884616305026 Obrir en finestra nova
Resum
The objective of this work is to parametrize the early age hydration behavior of accelerated cement pastes based on the chemical properties of cement and accelerators. Eight cements, three alkali-free and one alkaline accelerators were evaluated. Isothermal calorimetry, in situ XRD and SEM imaging were performed to characterize kinetics and mechanisms of hydration and the microstructure development. The reactivity of all accelerators is directly proportional to their aluminum and sulfate concent...
Citació
Salvador, R., Pialarissi Cavalaro, S.H., Cincotto, M., de Figueiredo, A.D. Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete. "Cement and concrete research", Novembre 2016, vol. 89, p. 230-248.
Paraules clau
Accelerator, Cement paste, Hydration, Kinetics, Sprayed concrete
Grup de recerca
EC - Enginyeria de la Construcció

Participants