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Effect of aggregate size on transition zone properties at the portland cement paste interface

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/0008-8846(91)90059-Q
AuthorSearch for: ; Search for: 1; Search for: 2
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
  2. National Research Council of Canada
FormatText, Article
SubjectConcrete
Abstract
Structural features of the transition zone between granular aggregate and portland cement paste were studied. Two types of aggregates were used, quartz and limestone. The transition zones are structurally characterized by a parameter referred to as "interfacial excess conductance" based on electrical conductivity methods. The experimental results indicate that the transition zone between quartz particles and portland cement paste is always less dense than bulk paste, regardless of the aggregate size, and that the thickness of this transition zone decreases with the decreasing of the aggregate size. The same general features occur for the transition zone between larger limestone particles and portland cement paste. A transition zone denser than bulk paste occurs, however, for much smaller limestone particles due possibly to chemical interaction between the limestone particles and portland cement paste.
Publication date
In
  • Cement and Concrete Research 21, no. 6 (1991): 999–1005.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-3137
NRC numberNRCC 35504
NRC-IRC-3410
NPARC number20329002
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Record identifierf74ded0b-5ded-4dee-8b1a-5432884792b0
Record created2012-07-18
Record modified2020-03-17
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