DTA-TG Study of the CaO-SiO2-H2O and CaO-Al2O3-SiO2-H2O Systems Under Hydrothermal Conditions

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dc.contributor.author Klimesch, DS
dc.contributor.author Ray, AS
dc.date.accessioned 2012-02-02T05:41:11Z
dc.date.issued 1999-01
dc.identifier.citation Journal Of Thermal Analysis And Calorimetry, 1999, 56 (1), pp. 27 - 34
dc.identifier.issn 1388-6150
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/14673
dc.description.abstract Simultaneous DTA-TG is an excellent technique for evaluating phases formed in hydrothermally treated CaO-SiO2-H2O and CaO-Al2O3-SiO2-H2O systems. Thermal analysis in combination with XRD and SEM, revealed that in the CaO-Al2O3-SiO2-H2O system the amount of hydrogarnet formed was the largest when gibbsite was used as the Al source, smallest for kaolin and intermediate for metakaolin. The endotherm peak temperature of the hydrogarnet dehydration endotherm was affected by the amount of hydrogarnet and the Si content of hydrogarnet. The thermal stability and structural order of 11 Å tobermorite were reduced with the incorporation of Al and, as a result, 11 Å tobermorite transformed into 9.3 Å tobermorite at lower temperatures while the transformation of the latter into beta-wollastonite required more energy. There exists a direct relationship between the 9.3 Å tobermorite and beta-wollastonite formation temperatures. Solid-state 29Si and 27Al MAS NMR data support these findings.
dc.format No Code
dc.publisher Springer
dc.title DTA-TG Study of the CaO-SiO2-H2O and CaO-Al2O3-SiO2-H2O Systems Under Hydrothermal Conditions
dc.type Journal Article
dc.parent Journal Of Thermal Analysis And Calorimetry
dc.journal.volume 1
dc.journal.volume 56
dc.journal.number 1 en_US
dc.publocation The Netherlands en_US
dc.identifier.startpage 27 en_US
dc.identifier.endpage 34 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0301 Analytical Chemistry
dc.personcode 000282
dc.personcode 860311
dc.percentage 100 en_US
dc.classification.name Analytical Chemistry en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Al-substituted 11 Å tobermorite - calcium silicate hydrate - derivative thermal curves - hydrogarnet - hydrothermal curing
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Built Infrastructure
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history School of Physics and Advanced Materials (ID: 343)
utslib.collection.history Closed (ID: 3)


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