Curing Effects on Air Permeability of Concrete

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The kinetics of cement hydration can be accelerated by steam curing and this kind of curing can be responsible for increasing concrete porosity, since a greater portion of non hydrated cement particles can be present. The increased porosity results can result in increased permeability. The aim of this work was to investigate the influence of curing on concrete quality by air permeability and compressive strength test. It was measured by means of a non steady state air permeameter. Concretes were produced with Portland cements containing 0%, 27% and 53% of ground granulated blastfurnace slag. The amount of slag in cement influenced concrete performance and steam curing increased air permeability of concrete.

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Periodical:

Edited by:

Zeng Zhu

Pages:

602-606

DOI:

10.4028/www.scientific.net/AMR.214.602

Citation:

G. Camarini "Curing Effects on Air Permeability of Concrete", Advanced Materials Research, Vol. 214, pp. 602-606, 2011

Online since:

February 2011

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[1] Camarini, G. 1995. Desempenho de Misturas Cimento Portland e Escória de Alto-Forno Submetidas à Cura Térmica. São Paulo, PhD Thesis, PCC-USP. (in Portuguese).

[2] Mehta, P. K.; Monteiro, P. J. M. 1994. Concrete: microstructure, properties and materials. McGraw-Hill 3rd. ed. (2006).

[3] ABNT – Associação Brasileira de Normas Técnicas. 1991. Cimento Portland de Alta Resistência Inicial – NBR 5733/91. Rio de Janeiro. (in Portuguese).

[4] ABNT – Associação Brasileira de Normas Técnicas. 1991. Cimento Portland de Alto-Forno – NBR 5735/91. Rio de Janeiro. (in Portuguese).

[5] Camarini, et al. Evaluation of Thenoz metodology to measure concrete air permeability. ACI Special Publication, 253, (2008).

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