The structure of cement-stone and the use of compacts as structural models

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IssuePart 3
Pages6773; # of pages: 7
Subjectcement; mechanical properties; porosity; model tests; Concrete
AbstractThe relation between hardness, modulus of elasticity and porosity was investigated in three different systems prepared from normal Type I portland cement. This study was undertaken to obtain some data on the structure of cement- stone, particularly with regard to the nature of the interparticle bonds and their effect on mechanical properties. The study also enabled the evaluation of the possible use of compacts in cement research. The three cement systems, designated as I, II, and III, cement pastes ( I) in which porosity varied from 40% to 70% and the degree of hydration from 73% to 98% (w/c ratio 0.40 to 1.20), compacted cement pastes (II) in which porosity varied within the range of 25% to 60%, and compacts of bottle hydrated cement (III) in which the porosity varied from 20% to 55% and the degree of hydration from 0% to 90% (i.e., unhydrated cement compacts were included). Test results generally supported the concept that the strength of the cement-stone is mainly derived from a particular type of interparticle bond.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number11426
NPARC number20374305
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Record identifier27516bc9-67ae-4b12-8cf6-bece53bcfccc
Record created2012-07-23
Record modified2016-05-09
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