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Estimation of Ca(OH)₂ and Mg(OH)₂: implications in cement chemistry

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1002/ijch.198200048
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectConcrete; Portland cement; cement; lime; magnesium; differential thermal analysis; hydrated Portland cement; magnesium oxychloride; magnesium oxysulphate; gypsum plasters; hydration; failure causes; calcium, magnesium oxides and hydroxides
Abstract
Portland cement, hydrated Portland cement, magnesium oxychloride, magnesium oxysulphate and plasters are inorganic cementitious systems in which different amounts of MgO, CaO, Ca(OH)[2] and Mg(OH)[2] are present. Identifying and estimating the Ca- and Mg-oxides and hydroxides by DTA provides information that can, in turn, be used for studying the mechanism of hydration of CaO, reactivity of calcium silicates, the relevance of the autoclave test for determining the unsoundness of cements, interactions occurring in polymer-impregnated cement, the effect of various admixtures on the hydration kinetics of cement and cement compounds, the contribution of Ca(OH)[2] to the physico-mechanical properties of cement, the composition of the hydrated silicates, mechanism of hydration, chemical activity of blended cements, strength development in magnesium-oxychloride and magnesium-oxysulphate cements and causes of failure of gypsum plasters.
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  • Israel Journal of Chemistry 22, no. 3: 240–246.
LanguageEnglish
Peer reviewedYes
IdentifierDBR-P-1110
NRC numberNRCC 22434
NRC-IRC-3034
NPARC number20375732
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Record identifier06ca67d9-9b0a-4643-8dec-88fa3ab363a7
Record created2012-07-23
Record modified2023-01-26
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