Influence of triethanolamine on the hydration characteristics of tricalcium silicate

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TypeArticle
Journal titleJournal of Applied Chemistry and Biotechnology
ISSN0375-9210
Volume22
Pages11251138; # of pages: 14
Subjectconcrete admixtures; cement; hydration; compressive strength; Concrete
AbstractThe hydration characteristics of 3CaO.SiO[2] or beta2CaO.SiO[ 2] are studied by an addition of 0.0, 0.1, 0.5 or 1.0% triethanolamine. The amount of Ca(OH)[2] found at 1, 3, 7 or 28 days was in the order C[3]S + 0% TEA > C[3]S + 0.1% TEA > C[3]S + 0.5% TEA > C[3]S + 1.0% TEA, irrespective of whether lime was estimated by X-ray, DTA, TGA or chemical analysis. The rate of hydration, in terms of the disappearance of 3CaO.SiO[2], showed that hydration proceeded faster in the presence of TEA after 1 day. Additions of TEA increase the induction period, promote the formation of a C-S-H with higher CaO/SiO[2] ratio, increase the formation of non-crystalline Ca(OH)[2] and enhance the surface area of the hydrated silicate product.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-RP-542
NRC number12893
2998
NPARC number20375089
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Record identifier7877be5b-d657-44be-8962-5e5096c91d80
Record created2012-07-23
Record modified2016-05-09
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