Fracture toughness of autoclaved portland cement - silica mixtures

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(83)90130-8
AuthorSearch for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume13
IssueJanuary 1
Pages8188; # of pages: 8
Subjectportland cement; mechanical properties; autoclaving; silica glass; cement - silica mixtures; low porosity low silica crack arrestors; Concrete
AbstractFracture toughness measurements made at 11% RH on autoclaved cement/silica mixtures having a wide range of silica contents and porosities yielded a series of curves for K[c] versus porosity and K[c] versus silica content. Those for preparations having low porosity and silica content were unique. Apparently alphaC[2]S-hydrate, unreacted silica and pores having specific size distribution can act as crack arrestors. K[c] versus hardness curves were similar to those for K[c] versus porosity. Simple microhardness tests may be useful in predicting fracture toughness of autoclaved cementitious systems.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1066
NRC number20763
3778
NPARC number20375251
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Record identifier822ac7dd-a1f2-477d-b8e2-72e6181f7cc2
Record created2012-07-23
Record modified2016-05-09
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