Advances in Characterization of Gas Transport in Concrete: Determination of Oxygen Diffusion Coefficient from Permeability Coefficient and Porosity

  • P. LinaresEmail author
  • C. Andrade
  • D. Baza
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 17)


One of the most relevant mechanisms that influence the life service of concrete (carbonation, compactness, alkaline protection) is gas diffusion through its mass. However, determination of gas diffusion coefficient in concrete is not a simple task. There is not a general standard which determines the test procedure. Other approaches or alternative parameters could be used in order to obtain the gas diffusion coefficient, including the use of permeability coefficient. Both parameters are dependent on material porosity and moisture content. The literature already proposes generic correlations for these parameters, but these correlations do not support the direct derivation of the gas diffusion coefficient. This paper presents the results of research carried out to analyse these generic correlations and to propose specific expressions that support the derivation of a value for the oxygen diffusion coefficient, based on the porosity and permeability coefficients. The research was centred on a experimentation process to obtain these parameters. A diffusion chamber was designed and built for use with two types of concrete mix, two distinct concrete curing processes and three separate values for humidity. Each test case sought to derive values for oxygen diffusion and permeability coefficients.


Concrete Diffusion Oxygen Permeability 


  1. 1.
    Gaber K (1988) Influence of mix proportions and components on the diffusion coefficient and the permeability of concrete. Darmstadt Concrete 3:39–48Google Scholar
  2. 2.
    Gräf HY, Grube H (1986) Influence of the composition and the curing of concrete on the gas permeability. Betontechnische berichte. (In German only)Google Scholar
  3. 3.
    Gaber, KY, Schlattner, E (1997) Final report of a research project Investigation of the pore structure of concretes with low radon permeability and possibilities for improving building materials with a high radon permeability. Sächsisches Staatsministerium für Wissenschaft und Kunst. (In German only)Google Scholar
  4. 4.
    Klink T et al (1999) Characterisation of the gas transport properties of porous materials by determining the radon diffusion coefficient. Mater Struct 32:749–754Google Scholar
  5. 5.
    European Committee for Standardization. Concrete durability. Tests methods. Determination to gas permeability of hardened concrete. EN 83981: 2008Google Scholar
  6. 6.
    ASTM-D4404-10 Standard Test Method for Determination of Pore Volume and Pore Volume Distribution of Soil and Rock by Mercury Intrusion PorosimetryGoogle Scholar
  7. 7.
    Andrade C et al (2012, April) Calculation of tortuosity factor for the model based in concrete resistivity. In: Second international conference on microstructural-related durability of cementitious composites, 11–13 April 2012. Amsterdam, The NetherlandsGoogle Scholar
  8. 8.
    European Committee for Standardization (2008) Concrete durability—test methods—conditioning of concrete test pieces for the purpose of gas permeability and capillary suction tests. EN 83966Google Scholar
  9. 9.
    International Organization for Standardization Air: radon-222-Part 10: determination of diffusion coefficient in waterproof materials using activity concentration measurement. ISO/CD 11665-10. ISO, 2013Google Scholar

Copyright information

© RILEM 2019

Authors and Affiliations

  1. 1.Eduardo Torroja Institute for Construction Sciences (IETcc), Spanish Research High CouncilMadridSpain
  2. 2.CIMNE: International Center for Numerical Methods in EngineeringUniversitat Politècnica de Catalunya (UPC)BarcelonaSpain

Personalised recommendations