Water retention and gas relative permeability of two industrial concretes

Journal Article · Sun Jul 15 00:00:00 EDT 2012 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2012.04.003· OSTI ID:21596972

Wei, Chen; Jian, Liu; Brue, Flore; Skoczylas, Frederic ^[1]; Bourbon, Xavier; Talandier, Jean ^[2]

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1. Univ Lille Nord de France, F-59000 Lille (France)
2. Andra, 1-7 rue Jean Monnet, F-92298 Chatenay-Malabry Cedex (France)

This experimental study aims at identifying the water retention properties of two industrial concretes to be used for long term underground nuclear waste storage structures. Together with water retention, gas transfer properties are identified at varying water saturation level, i.e. relative gas permeability is assessed directly as a function of water saturation level S{sub w}. The influence of the initial de-sorption path and of the subsequent re-saturation are analysed both in terms of water retention and gas transfer properties. Also, the influence of concrete microstructure upon water retention and relative gas permeability is assessed, using porosity measurements, analysis of the BET theory from water retention properties, and MIP. Finally, a single relative gas permeability curve is proposed for each concrete, based on Van Genuchten-Mualem's statistical model, to be used for continuous modelling approaches of concrete structures, both during drying and imbibition.

• OSTI ID: 21596972
• Journal Information: Cement and Concrete Research, Vol. 42, Issue 7; Other Information: DOI: 10.1016/j.cemconres.2012.04.003; PII: S0008-8846(12)00076-2; Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0008-8846
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CONCRETES
DESORPTION
MICROSTRUCTURE
PERMEABILITY
POROSITY
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
RETENTION
SIMULATION
STATISTICAL MODELS
UNDERGROUND
WATER
WATER SATURATION
BUILDING MATERIALS
HYDROGEN COMPOUNDS
LEVELS
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIOACTIVE MATERIALS
SATURATION
SORPTION
WASTE MANAGEMENT
WASTES