Effect of air voids on the dilatation of mortar during freezing

Z. Sun, George Scherer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

When a saturated porous body freezes, hydraulic pressure is produced by the 9% volume increase as water turns to ice; the magnitude of the resulting stress depends on the rate of growth and the permeability of the body. At the same time, crystallization pressure is exerted by the ice on the pore walls, with a magnitude that depends on the temperature and pore shape. If macroscopic air voids are present, ice formed in the voids creates suction in liquid in surrounding mesopores, which protects the body by imposing compressive stresses on the solid network. By combining data from calorimetry and differential mechanical analysis, it is possible to use poromechanics to account quantitatively for all of these effects.

Original languageEnglish (US)
Title of host publicationPoromechanics IV - 4th Biot Conference on Poromechanics
EditorsHoe I. Ling, Andrew Smyth, Raimondo Betti
PublisherDEStech Publications
Pages896-901
Number of pages6
ISBN (Electronic)9781605950068
StatePublished - Jan 1 2009
Event4th Biot Conference on Poromechanics - New York, United States
Duration: Jun 8 2009Jun 10 2009

Publication series

NamePoromechanics IV - 4th Biot Conference on Poromechanics

Other

Other4th Biot Conference on Poromechanics
CountryUnited States
CityNew York
Period6/8/096/10/09

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Condensed Matter Physics
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Effect of air voids on the dilatation of mortar during freezing'. Together they form a unique fingerprint.

Cite this