Hostname: page-component-7bb8b95d7b-2h6rp Total loading time: 0 Render date: 2024-09-19T13:47:50.015Z Has data issue: false hasContentIssue false
  • English
  • Français

Air Permeability Measurement

Published online by Cambridge University Press:  22 February 2011

Daniel Perraton ,
André Carles-Gibergues ,
Pierre-Claude Aitcin  and
Bernard Thenoz
Daniel Perraton
Affiliation:
Research assistant, Sherbrooke (Québec) J1k 2R1
André Carles-Gibergues
Affiliation:
Associate professor at the Institut National des Sciences Appliquées, 156 Avenue de Rangueil, 31077 Toulouse, Cédex France
Pierre-Claude Aitcin
Affiliation:
Full professor at the Université de Sherbrooke, Sherbrooke (Québec) J1k 2R1
Bernard Thenoz
Affiliation:
Associate professor at the Institut National des Sciences Appliquées, 156 Avenue de Rangueil, 31077 Toulouse, Cédex France
Get access

Abstract

Air permeability was determined for concretes of variable porosity (w/c ratio of 0.33, 0.50, and 0.67). The reproducibility of the test and the ability to characterize the permeability of different concrete were evaluated. Results indicate that air permeability test gives suitable reproducibility with a margin of error of 10%, which tends to improve with increase in w/c ratio. The difference in air permeability of concretes with the w/c ratios investigated are distinguishable by this technique. Furthermore air permeability coefficients used were modified with equations derived in accordance to Darcy's law, and the resulting air permeabilities compared. Data calculated with an air permeability coefficient based on mean radius pore (corrected equation) appears to give a more realistic value with greater differentiation between the ranges. Values were determined on specimens after 28 days, maintained at room temperature (50% RH), then again after an additional 2 days at 60°C in a ventilated oven. Oven-dried specimens exhibit significantly greater air permeability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 137: Symposium P – Pore Structure and Permeability of Cementitious Materials , 1988 , 191
Copyright
Copyright © Materials Research Society 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

[1] Thenoz, B., “Mesure de la perméabilité et de la porosité des roches tris compactes”,G.R.A.S. 243, 1964, pp. 289–291.Google Scholar
[2] Schönlin, K. and Hilsdorf, H.K., “Permeability as a Measure of Potential Durability of Concrete”, Permeability of Concrete, ACI-SP 108, 1988, pp. 99–116.Google Scholar
[3] Thenoz, B., “Contribution à l'étude de la perméabilité des roches et de leur altérabilité - Application à des roches granitiques”. Ph.D. Thesis, Faculté des sciences, Université de Toulouse, 1966, p. 101.Google Scholar
[4] Houpert, A., Delclaud, C., Curutchet, J. and Albert, P., Revue de l'Institut Franqaise du Pétrole, Vol. VI, 1951, No. 6, pp. 180–190.Google Scholar
[5] Carman, P.C., “Diffusion and Flow of Gases and Vapours Through Micropores - I Slip Flow and Molecular Streaning”. Proceeding of the Royal Society of London, Serie A, Mathematical and Physical Sciences, Vol.203, 1950, p. 56.Google Scholar
[6] Shoemaker, D.P., Garland, C.W. and Steinfeld, J.I., “Experiments in Physical Chemistry”, McGraw-Hill, 3e ed., New York, 1974, 725 p.Google Scholar
[7] Carman, P.C. and Malherbe, P. Le, R.,M “Routine Measurement of Surface of Point Pigments and other Fine Powders”. Journal of the Society of Chemical Industry, 69, 1950, p. 135.Google Scholar
[8] Perraton, D., Aitcin, P.-C. and Vézina, D., “Permeabilities of Silica Fume Concrete”, Permeability of Concrete, ACI-SP 108, 1988, pp. 63–84.Google Scholar
[9] Hooton, R.D., “Permeability and Pore Structure of Cement Pastes Containing Fly Ash, Slag and Silica Fume”, STP-897, 1986.Google Scholar
[10] Carles-Gibergues, A., Personal Communication.Google Scholar
[11] Nagataki, S., and Ujiki, I., “Air Permeability of Concretes Mixed With Fly Ash and Condensed Silica Fume”, SP-91, Vol.2, 1986, pp. 1049–1068.Google Scholar