Time-dependent and intrinsic characteristics of portland cement hydrated in the presence of calcium

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TypeArticle
Journal titleIl Cemento
ISSN0008-8900
Volume75
Issue3
Pages311322; # of pages: 12
Subjectportland cement; water cement ratios; hydrated cement; calcium chloride; Concrete; ciment portland; rapport eau ciment; ciment hydrate; chlorure de calcium
AbstractPortland cement was hydrated at water:cement ratios of 0.25 and 0.4 in the presence of 0, 1, 2 and 3.5% CaCl[2] at 23 degrees C and the time-dependent characteristics (non- evaporable water and Ca(OH)[2] contents, heat development, porosity, absolute density and compressive strength) were followed for periods ranging from a few hours to 90 days. Most changes occurred in the first 3 days and depended on the amount of CaCl[2] present and the water:cement ratio. Comparison of the intrinsic properties of the cement pastes was carried out by determining porosity, density, surface area, strength and microstructural charcteristics at constant degrees of hydration. There was evidence of considerable difference in the physical characteristics of the samples, indicating that CaCl[2] affects the intrinsic property of hydrated cement.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-841
NRC number17455
3019
NPARC number20375150
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Record identifier4b37c0fd-fb05-413c-8736-2406ae3d6509
Record created2012-07-23
Record modified2016-05-09
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