About: The use of concrete filler as mineral admixture in concrete

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone, energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone. One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone, energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone. (en)
Title	The use of concrete filler as mineral admixture in concrete The use of concrete filler as mineral admixture in concrete (en)
skos:prefLabel	The use of concrete filler as mineral admixture in concrete The use of concrete filler as mineral admixture in concrete (en)
skos:notation	RIV/46346741:_____/12:TEPOJ04!RIV13-MPO-46346741
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(FR-TI1/004)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Bílek, Vlastimil
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	ŽPSV a.s.
http://linked.open...dnocenehoVysledku	176332
http://linked.open...ai/riv/idVysledku	RIV/46346741:_____/12:TEPOJ04
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	concrete filler; fly ash; synergy; limestone (en)
http://linked.open.../riv/klicoveSlovo	synergy fly ash concrete filler limestone
http://linked.open...ontrolniKodProRIV	[A6B18174919A]
http://linked.open...in/vavai/riv/obor	JN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	The research on and development of concretes based on a new binder aimed at utilization of secondary raw materials together with improvement of quality and durability parameters of concrete.
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Bílek, Vlastimil

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