Dynamic pressurization method for measuring permeability and modulus: I. Theory

George W. Scherer

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The permeability of a saturated porous body can be determined from the kinetics of dilatation resulting from a change in pressure in the surrounding bath. This method was previously applied to aerogels [Gross J, Scherer GW (2003) J Non-Cryst Solids 325, 34-47]. The theory is here extended to allow for the compressibility of the solid phase, so that the method can be applied to more rigid materials, such as concrete. A viscoelastic analysis indicates that creep of the sample will have a small effect on the measured permeability for cementitious materials, in most cases, However, the effect of entrapped air in the pore liquid is shown to have a drastic effect on the relaxation behavior, so it is essential to reduce the air content below ∼0.1 volume %. For samples without entrapped air, a simple result is obtained that is tested in a companion paper.

Original languageEnglish (US)
Pages (from-to)1041-1057
Number of pages17
JournalMaterials and Structures/Materiaux et Constructions
Volume39
Issue number10
DOIs
StatePublished - Dec 2006

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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