Permeability of concrete under stress N. BanthiaT, A. Biparva, S. Mindess The University of British Columbia, Department of Civil Engineering, 2024-6250 Applied Science Lane, Vancouver, BC, Canada V6T 1Z4 Received 23 January 2004; accepted 13 October 2004 Abstract : Permeability tests were carried out on concrete specimens subjected to a compressive stress. Special emphasis was placed on understanding the influence of stress application on the permeability on concrete at early ages (1–3 days). It was found that the presence of a compressive stress below a certain threshold value decreased the permeability, but when the applied stress exceeded this threshold, a significant increase in the permeability occurred. Permeability increases due to an applied stress also appear to depend upon the overall stress history. Keywords : Concrete; Permeability; Stress; Microcracking
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