diplomska naloga
Nejc Andrejka (Avtor), Violeta Bokan-Bosiljkov (Mentor), Tomo Cerovšek (Član komisije za zagovor), Sebastjan Bratina (Član komisije za zagovor), Andraž Hočevar (Komentor)

Povzetek

Vpliv mineralnih dodatkov na reološke lastnosti svežega betona

Ključne besede

gradbeništvo;diplomska dela;VSŠ;OG-MK;reologija;viskoznost;strižna napetost na meji tečenja;plastična viskoznost;posed;razlez;

Podatki

Jezik: Slovenski jezik
Leto izida:
Izvor: Ljubljana
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: [N. Andrejka]
UDK: 666.97.031(043.2)
COBISS: 6029921 Povezava se bo odprla v novem oknu
Št. ogledov: 2508
Št. prenosov: 602
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Influence of mineral additives on rheological properties of fresh concrete
Sekundarni povzetek: The purpose of the research was to examine the influence of mineral admixture on the rheological properties of fresh concrete mixtures. Rheological properties of fresh concrete mixtures were obtained in three ways, with well known methods slump test and flow table test and with yet fairly non-established coaxial cylindrical rheometer ConTec Viscometer 5. Rheometer is a better and modern way to detect such properties of fresh concrete. Recently the approach has become indispensable, due to growing demands for quality of cast concrete and for adequate design of self-compacting and highly-flowable concrete mixtures. Slump test and flow table test do not provide enough information about rheological properties for this kind of special concrete. We researched the impact of three mineral additives: micro silica, tuff and granulated blast furnace slag, as well as the impact of water-cement ratio, which is a key factor in concrete. We also researched the influence of super-plasticizer, because concrete needs to be in proper workability, which is necessary for proper measurements. We analyzed the influence of mineral admixtures on the rheological properties of concrete over time and their effect on mechanical properties according to their share in the concrete.
Sekundarne ključne besede: graduation thesis;civil engineering;rheology;plastic viscosity;yield value;slump;flow;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Diplomsko delo/naloga
Komentar na gradivo: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani: XII, 64 str.
Vrsta dela (ePrints): thesis
Naslov (ePrints): Influence of mineral additives on rheological properties of fresh concrete
Ključne besede (ePrints): reologija;viskoznost;strižna napetost na meji tečenja;plastična viskoznost;posed;razlez
Ključne besede (ePrints, sekundarni jezik): rheology;plastic viscosity;yield value;slump;flow
Povzetek (ePrints): Namen opravljenih preiskav je bil raziskati vpliv mineralnih dodatkov na reološke lastnosti svežih betonskih mešanic. Lastnosti svežih betonskih mešanic smo pridobili na tri načine, s klasičnima metodama preizkusa z razlezom in preizkusa s posedom ter s še dokaj neuveljavljenim koaksialnim valjastim reometrom ConTec Viscometer 5. Reometer predstavlja boljši in modernejši način za ugotavljanje lastnosti svežih betonov. To je v zadnjem času ob vse večjih zahtevah po kakovostni vgradnji betona ter ustreznem projektiranju samozgoščevalnih in lahkovgradljivih betonov nujno potrebno, saj uveljavljeni metodi razleza in poseda ne podata dovolj informacij. Obravnavali smo vpliv treh mineralnih dodatkov: mikrosilike, tufa in granulirane plavžne žlindre, poleg tega pa tudi vpliv vodo-cementnega razmerja, ki je ključni faktor v betonu in vpliv super-plastifikatorja, ker smo ga zaradi boljše obdelavnosti betona, ki je potrebna za ustrezno meritev dodali vsem mešanicam z mineralnimi dodatki. Analizirali smo vpliv mineralnih dodatkov na mehanske lastnosti sveže betonske mešanice po času ter njihov vpliv na reološke lastnosti glede na njihov delež v betonu.
Povzetek (ePrints, sekundarni jezik): The purpose of the research was to examine the influence of mineral admixture on the rheological properties of fresh concrete mixtures. Rheological properties of fresh concrete mixtures were obtained in three ways, with well known methods slump test and flow table test and with yet fairly non-established coaxial cylindrical rheometer ConTec Viscometer 5. Rheometer is a better and modern way to detect such properties of fresh concrete. Recently the approach has become indispensable, due to growing demands for quality of cast concrete and for adequate design of self-compacting and highly-flowable concrete mixtures. Slump test and flow table test do not provide enough information about rheological properties for this kind of special concrete. We researched the impact of three mineral additives: micro silica, tuff and granulated blast furnace slag, as well as the impact of water-cement ratio, which is a key factor in concrete. We also researched the influence of super-plasticizer, because concrete needs to be in proper workability, which is necessary for proper measurements. We analyzed the influence of mineral admixtures on the rheological properties of concrete over time and their effect on mechanical properties according to their share in the concrete.
Ključne besede (ePrints, sekundarni jezik): rheology;plastic viscosity;yield value;slump;flow
ID: 8312545