About: High strength concrete with carbon nanotubes

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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	High strength concrete with strengths exceeding 80 MPa can only be manufactured with fine grained active additions. Amorphous microsilica is the most frequently used one; its specific surface is over 25 000 m2/kg and average size of grain between 0,5 and 1. This addition has been used for manufacture of high strength concrete for at least 30 years. However, ultra fine active particles with average size around 10-50 nm are more effective, like nanosilica with at least 90 % of amorphous SiO2. Carbon nanotubes with diameter 2-5 nm also seem to be very promising for high strength and high performance concrete. The advantage of carbon nanotubes is low dosing and high effectivity increasing not only compressive strength and tensile bending strength but also durability of concrete exposed to cyclical freezing. Positive effect on reduction of carbonataion and increased resistance to chemically aggressive environments were also observed. The paper presents possibilities of use of carbon nanotubes for production of HPC. Experimental verification of application of carbon nanotubes is described including problems of their redispersion and mixing in cement components are described. High strength concrete with strengths exceeding 80 MPa can only be manufactured with fine grained active additions. Amorphous microsilica is the most frequently used one; its specific surface is over 25 000 m2/kg and average size of grain between 0,5 and 1. This addition has been used for manufacture of high strength concrete for at least 30 years. However, ultra fine active particles with average size around 10-50 nm are more effective, like nanosilica with at least 90 % of amorphous SiO2. Carbon nanotubes with diameter 2-5 nm also seem to be very promising for high strength and high performance concrete. The advantage of carbon nanotubes is low dosing and high effectivity increasing not only compressive strength and tensile bending strength but also durability of concrete exposed to cyclical freezing. Positive effect on reduction of carbonataion and increased resistance to chemically aggressive environments were also observed. The paper presents possibilities of use of carbon nanotubes for production of HPC. Experimental verification of application of carbon nanotubes is described including problems of their redispersion and mixing in cement components are described. (en)
Title	High strength concrete with carbon nanotubes High strength concrete with carbon nanotubes (en)
skos:prefLabel	High strength concrete with carbon nanotubes High strength concrete with carbon nanotubes (en)
skos:notation	RIV/62156489:43410/13:00212639!RIV14-TA0-43410___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(FR-TI2/350), P(TA01011030), P(TA01020326)
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Ševelová, Lenka
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Lesnická a dřevařská fakulta
http://linked.open...dnocenehoVysledku	77367
http://linked.open...ai/riv/idVysledku	RIV/62156489:43410/13:00212639
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Compressive strength.; Physicalmechanical properties; concrerte (en)
http://linked.open.../riv/klicoveSlovo	Compressive strength. Physicalmechanical properties concrerte
http://linked.open...ontrolniKodProRIV	[D6EED763230E]
http://linked.open...v/mistoKonaniAkce	USA
http://linked.open...i/riv/mistoVydani	Singapore
http://linked.open...i/riv/nazevZdroje	7th International Structural Engineering and Construction Conference
http://linked.open...in/vavai/riv/obor	JN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Optimization of design and realization of low capacity roads pavements. *Green Cement and Evironmentally Friendly Concrete Products: Development and technological support of introducing new types of economical and ecological cements intended for complex application in production of environmentally friendly concrete in CR Photocatalytic precast concrete elements based on TiO2 with selfcleaning effects
http://linked.open...UplatneniVysledku	2013
http://linked.open...iv/tvurceVysledku	Hela, Rudolf Ševelová, Lenka Florian, Aleš
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2013-01-01 (xsd:date)
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Neuveden
https://schema.org/isbn	978-981-07-5354-2
http://localhost/t...ganizacniJednotka	43410

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