Isothermal water vapour permeability of concrete with different supplementary cementitious materials

N. Alderete; Y. A. Villagrán Zaccardi; A. A. Di Maio; N. De Belie

doi:10.3989/mc.2018.02517

Autores/as

N. Alderete LEMIT, CONICET - Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University https://orcid.org/0000-0001-7967-1955
Y. A. Villagrán Zaccardi LEMIT, CONICET - Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University https://orcid.org/0000-0002-0259-7213
A. A. Di Maio LEMIT, CONICET https://orcid.org/0000-0002-3667-5654
N. De Belie Magnel Laboratory for Concrete Research, Department of Structural Engineering, Faculty of Engineering and Architecture, Ghent University https://orcid.org/0000-0002-0851-6242

DOI:

https://doi.org/10.3989/mc.2018.02517

Palabras clave:

Permeabilidad, Durabilidad, Escoria granulada de alto horno, Caliza, Puzolana

Resumen

La permeabilidad al vapor de agua (PVA) es un parámetro fundamental para el acondicionamiento térmico sustentable de edificios. El estudio de PVA en hormigón con AM permite el diseño de estructuras con durabilidad y sustentabilidad mejoradas. A nuestro conocimiento, hay insuficiente información experimental en la literatura sobre PVA en hormigón con AM. Se hicieron ensayos de PVA en hormigones con escoria granulada de alto horno (EGAH) y polvo calizo (PC) en reemplazos parciales de cemento normal, y de hormigones con cemento puzolánico. Resultados de tres gradientes de humedad muestran que EGHA induce a la mayor reducción de PVA, seguida para por la puzolana natural. PC muestra un efecto de dilución del ligante, el cual pudo ser compensado por la EGHA en las mezclas ternarias. De la comparación entre PVA y velocidad de succión capilar, la influencia de las AM en la conectividad de los poros más pequeños es evaluada.

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