Thermal properties, environmental deterioration and applications of macro-defect-free cements

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TypeArticle
Journal titleResearch Journal of Chemistry and Environment
Volume9
IssueMarch
Pages2327; # of pages: 5
SubjectMDF cements, polymers, thermal properties, environmental deterioration, applications; Concrete
AbstractMacro-Defect-Free (MDF) cements using the blends of sulfoaluminate ferrite belite (SAFB) clinkers and ordinary Portland cement (OPC) in mass ratio 85 : 15 and hydroxypropylmethyl cellulose (HPMC) or polyphosphates (poly-P) were subjected to various moist atmosphere to investigate their environmental deterioration. Their thermal decomposition studies were also carried out before and after moisture attack. The effect of individual relative humidity (RH) on moisture resistance of MDF cements is more intensive than the effects of composition of MDF cements or duration of the original MDF cements synthesis. There are three main temperature regions on TG curves of both series of MDF cement samples (before and after moisture attack). In the inter-phase section of MDF cements, the content of classical cement hydrates (CSH, gypsum, AFm and AFt phases) decomposing by 250 oC is increased, while the content of cross-links section and Ca(OH)2 with typical thermoanalytical traces in temperature range 250 - 550 oC remains almost identical before and after moisture attack. In the temperature range 550 - 800 oC, decomposition of CaCO3 is occurred. Some important applications of MDF cements also have been reviewed in this work*.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number47665
16844
NPARC number20377372
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Record identifier405efac4-75e6-47c7-b7f8-b8877681b691
Record created2012-07-24
Record modified2016-05-09
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