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Fracture toughness of autoclaved Portland cement: silica mixtures

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1016/0008-8846(83)90130-8
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectConcrete; Portland cement; mechanical properties; autoclaving; silica glass; cement - silica mixtures; low porosity low silica crack arrestors
Abstract
Fracture 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.
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  • Cement and Concrete Research 13, no. January 1 (1 January 1983): 81–88.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1066
NRC numberNRCC 20763
NRC-IRC-3778
NPARC number20375251
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Record identifier822ac7dd-a1f2-477d-b8e2-72e6181f7cc2
Record created2012-07-23
Record modified2024-03-22
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