Particulate admixture for enhanced freeze-thaw resistance of concrete

Download
  1. (PDF, 844 KB)
  2. Get@NRC: Particulate admixture for enhanced freeze-thaw resistance of concrete (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/0008-8846(78)90057-1
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume8
IssueJanuary 1
Pages5360; # of pages: 8
Subjectconcrete (materials); porous concrete; air entrapped concrete; freeze thaw cycles; frost resistance; Admixtures
AbstractIncorporation of porous particles with at least 30 per cent total porosity and pore diameters, mainly between 0.3 and 2 microns, added to the plastic mix were found to improve significantly the freeze-thaw resistance of hydrated neat cement paste and concrete. Particles of commercially fired clay bricks, diatomaceous earth, and fly ash (sintered and agglomerated) were tested. The concentration required for the achievement of a given level of frost resistance depends on the physical characteristics of the material. Typically, granules of a particular brick (0.5 + or - 0.08 mm in size, 36 per cent total porosity) in 16 wt per cent concentration allowed 0.5 w/c cement paste specimen to endure 1260 freeze- thaw cycles without injury. Incorporation of porous particles as admixtures eliminates the problems due to the instability and strength reducing effect of conventionally entrained air bubbles.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-748
NRC number16387
2836
NPARC number20374381
Export citationExport as RIS
Report a correctionReport a correction
Record identifier0cc0a281-af54-4fb6-a44b-5d027f6a0458
Record created2012-07-23
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)