About: Effects of Water Jet on Heat-Affected Concretes

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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)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.sciencedirect.com/science/article/pii/S1877705813008643
Description	The paper is dealing with the effects of flat high-speed water jet on concretes affected by high temperature. Research should help to correct use of water jet technology in repair works on concrete structures especially after wildfires in tunnels, underground garages, etc., which are exposed to enormous thermal stress. Four concrete mixtures were prepared for tests of interaction of water jet with concrete. The samples were exposed to 200 °C and 600 °C and for comparison one third of samples were left unaffected. It was found, that both lower traversing velocity (cutting speed) and higher water pressure led to removal of higher amount of concrete. Higher temperature loading caused decrease of concrete strength and thus easier removal of surface layers by water jet. Concrete mixtures with basalt aggregate demonstrate higher resistance against water jet penetration regardless thermal loading compared to mixture with standard granodiorite aggregate. Presence of polypropylene fibres has substantial influence on concrete strength properties, however only marginal impact on resistance against water jet penetration. The paper is dealing with the effects of flat high-speed water jet on concretes affected by high temperature. Research should help to correct use of water jet technology in repair works on concrete structures especially after wildfires in tunnels, underground garages, etc., which are exposed to enormous thermal stress. Four concrete mixtures were prepared for tests of interaction of water jet with concrete. The samples were exposed to 200 °C and 600 °C and for comparison one third of samples were left unaffected. It was found, that both lower traversing velocity (cutting speed) and higher water pressure led to removal of higher amount of concrete. Higher temperature loading caused decrease of concrete strength and thus easier removal of surface layers by water jet. Concrete mixtures with basalt aggregate demonstrate higher resistance against water jet penetration regardless thermal loading compared to mixture with standard granodiorite aggregate. Presence of polypropylene fibres has substantial influence on concrete strength properties, however only marginal impact on resistance against water jet penetration. (en)
Title	Effects of Water Jet on Heat-Affected Concretes Effects of Water Jet on Heat-Affected Concretes (en)
skos:prefLabel	Effects of Water Jet on Heat-Affected Concretes Effects of Water Jet on Heat-Affected Concretes (en)
skos:notation	RIV/68145535:_____/13:00392345!RIV14-MSM-68145535
http://linked.open...avai/predkladatel	Ústav geoniky AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(ED2.1.00/03.0082), P(GAP104/12/1988), P(TA01010948)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Zeleňák, Michal Foldyna, Josef Sitek, Libor Klich, Jiří
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	Ústav geoniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	72013
http://linked.open...ai/riv/idVysledku	RIV/68145535:_____/13:00392345
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	concrete; heating; repair of structures; fireproof concretes; surface layers (en)
http://linked.open.../riv/klicoveSlovo	fireproof concretes repair of structures surface layers concrete heating
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[3994B8FF54E7]
http://linked.open...i/riv/nazevZdroje	Procedia Engineering
http://linked.open...in/vavai/riv/obor	JN
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Institute of clean technologies for mining and utilization of raw materials for energy use Improvement of adhesion of polypropylene fibers for concrete reinforcement by could plasma Study of interactions of components of cementitious composites exposed to high temperatures
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	57
http://linked.open...iv/tvurceVysledku	Bodnárová, L. Foldyna, Josef Novotný, M. Sitek, Libor Klich, Jiří Zeleňák, Michal Válek, J.
issn	1877-7058
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.proeng.2013.04.131

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