Significance of microhardness of porous inorganic materials

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DOIResolve DOI: http://doi.org/10.1016/0008-8846(72)90007-5
AuthorSearch for:
TypeArticle
Journal titleCement and Concrete Research
ISSN0008-8846
Volume2
Issue6
Pages717729; # of pages: 13
Subjectinorganic materials; porosity; mechanical properties; Concrete
AbstractMicrohardness was measured of porous and nonporous samples of halite and selenite and it has been shown that the relationship between microhardness and porosity may be expressed by the emperical relation H = H[o]e[-bp]. The significance of the microhardness measurements as applied to porous materials is discussed from the standpoint of the disturbed zone of crystals or micro-units, including the problem of "work hardening" when powdered samples are compacted. The effect of morphology on microhardness is also discussed with regard to a series of gypsum samples. Reference is made to the effect of humidity on microhardness of porous glass and the conclusion drawn that the micromechanics of failure in microhardness are similar to flexure strength.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-536
NRC number12831
2663
NPARC number20374010
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Record identifier430336c5-ebff-4596-95bd-c17000f3ca85
Record created2012-07-23
Record modified2016-05-09
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