About: Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Early-stage hydration heat development in Portland cement paste and cement mortar is studied as a function of w/c within a range of 0.35 to 0.60, using a recently developed large-volume isothermal heat flow calorimeter. Experimental results show that the specific hydration heat of cement paste, Qcp, varies little and irregularly with changing w/c but a systematic increase in the specific hydration heat of cement mortar, Qcm, with increasing w/c is observed, the differences being within a 3-5 % range. While for the lowest w/c of 0.35 Qcm is almost identical to the cement paste, for higher w/c Qcm is always higher than Qcp and the differences increase with the increasing w/c; for w/c = 0.6 they are within a range of 5-7 % over the time period of 48 hours. The differences in the specific hydration heats of cement mortar and cement paste can be attributed to the siliceous sand in cement mortar which contains a relatively high amount of fine particles which are capable of stimulating the hydration process. Early-stage hydration heat development in Portland cement paste and cement mortar is studied as a function of w/c within a range of 0.35 to 0.60, using a recently developed large-volume isothermal heat flow calorimeter. Experimental results show that the specific hydration heat of cement paste, Qcp, varies little and irregularly with changing w/c but a systematic increase in the specific hydration heat of cement mortar, Qcm, with increasing w/c is observed, the differences being within a 3-5 % range. While for the lowest w/c of 0.35 Qcm is almost identical to the cement paste, for higher w/c Qcm is always higher than Qcp and the differences increase with the increasing w/c; for w/c = 0.6 they are within a range of 5-7 % over the time period of 48 hours. The differences in the specific hydration heats of cement mortar and cement paste can be attributed to the siliceous sand in cement mortar which contains a relatively high amount of fine particles which are capable of stimulating the hydration process. (en)
Title	Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c (en)
skos:prefLabel	Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c (en)
skos:notation	RIV/68407700:21110/12:00194302!RIV13-GA0-21110___
http://linked.open...avai/predkladatel	Fakulta stavební
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GBP105/12/G059)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Černý, Robert Tydlitát, Vratislav Zákoutský, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	123329
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/12:00194302
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hydration heat; fillers; cement paste; cement mortar; w/c; isothermal heat flow calorimeter (en)
http://linked.open.../riv/klicoveSlovo	cement mortar cement paste hydration heat isothermal heat flow calorimeter w/c fillers
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[E913421A0A28]
http://linked.open...i/riv/nazevZdroje	Thermochimica Acta
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Cumulative time dependent processes in building materials and structures
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	546
http://linked.open...iv/tvurceVysledku	Černý, Robert Schmieder, M. Tydlitát, Vratislav Zákoutský, Jan
http://linked.open...ain/vavai/riv/wos	000309299500006
issn	0040-6031
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.tca.2012.07.028
http://localhost/t...ganizacniJednotka	21110
is http://linked.open...avai/riv/vysledek of	Application of large-volume calorimetry for monitoring the early-stage hydration heat development in cement-based composites as a function of w/c

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