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Properties of Portland cement-silica fume pastes: I. Porosity and surface properties

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1016/0008-8846(85)90141-3
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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectConcrete; cement; surface properties (materials); porosity; paste (state); pore size distribution; surface area; drying shrinkage; CaOH₂ - silica fume reaction effects; total porosities water technique measurement
Abstract
Properties such as porosity, pore-size distribution, surface area and drying shrinkage are determined for silica fume- Portland cement blends (0-30% silica fume) cured from 1 to 180 days at w/(c+sf) of 0.25 and 0.45. Porosity was measured by helium, mercury and water techniques. It is shown that in paste blends a discontinuous pore structure is formed after as little as seven days of curing due to reaction of Ca(OH)[2] with silica fume. The pores are not so large as those in mortars owing to the lack of interface effects. Total porosities of the blends can only be measured by a water technique, whereas for plain cement pastes other techniques are applicable.
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  • Cement and Concrete Research 15, no. September 5 (1 September 1985): 765–774.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1333
NRC numberNRCC 25184
NRC-IRC-3346
NPARC number20375919
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Record identifierf54d9666-7367-46ab-84e6-f2e7bc8f653d
Record created2012-07-23
Record modified2023-12-18
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