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Behaviour of ASTM type V cement hydrated in the presence of sulfonated melamine formaldehyde

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectCement and Concrete; Concrete; ciments
Abstract
ASTM Types I and V Portland cements were hydrated up to 28 days in the presence of 0.3%and 0.6% sulfonated melamine formaldehyde (SMF), at a water/cement ratio of 0.35.Hydration was studied by conduction calorimetric and thermogravimetric analyses. Theamount of Ca(0 Hh produced, compressive strength and porosity l!'ere determined after 1, 3,7 and 28 days of curing. The compressive strengths of all samples increased with the age ofcuring. In the period studied the values decreased in the order: Type I cement(reference) = Type I cement + SMF> Type V cement (reference) ~ Type V cement + SMF.The superplasticizer addition retarded the development of heat in the cements, but moreseverely in Type V cements. Porosities were generally higher for samples with 100vercompressive strengths. In the presence of 0.6% SMF, the early lOll' strengths in Type Vcement mixtures could be attributed to lower degrees of hvdration. At later ages, themicrostructure rather than the degree of hydration determined the strength development.However, incorporation of 0.3%SMF in Type V cement did not affect its strength development.
Publication date
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  • Materials and Structures 28 (1995): 133–138.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-3584
NRC numberNRCC 37038
NRC-IRC-5080
NPARC number20375187
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Record identifiere6674b79-d281-493d-8de3-23ae697520a9
Record created2012-07-23
Record modified2020-06-06
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