Estimation of CaOH2 and MgOH2: implications in cement chemistry

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Journal titleIsrael Journal of Chemistry
Pages240246; # of pages: 7
Subjectcement; lime; magnesium; differential thermal analysis; portland cement; hydrated portland cement; magnesium oxychloride; magnesium oxysulphate; gypsum plasters; hydration; failure causes; calcium, magnesium oxides and hydroxides; Concrete; ciment; oxyde de calcium; magnesium; analyse thermique differentielle
AbstractPortland 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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AffiliationNational Research Council Canada
Peer reviewedYes
NRC numberNRCC 22434
NPARC number20375732
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Record identifier06ca67d9-9b0a-4643-8dec-88fa3ab363a7
Record created2012-07-23
Record modified2017-06-29
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