diplomska naloga
Maša Kušar (Author), Violeta Bokan-Bosiljkov (Mentor), Tomo Cerovšek (Thesis defence commission member), Aleksander Srdič (Thesis defence commission member)

Abstract

Mehanske lastnosti lahkovgradljivega in samozgoščevalnih betonov

Keywords

gradbeništvo;VSŠ;diplomska dela;samozgoščevalni beton;lahkovgradljivi beton;sovisnosti med napetostmi in deformacijami;tlačna trdnost betona;natezna trdnost betona;elastični modul betona;

Data

Language: Slovenian
Year of publishing:
Source: Ljubljana
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [M. Kušar]
UDC: 69:625.821.5(043.2)
COBISS: 5746273 Link will open in a new window
Views: 2080
Downloads: 605
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Other data

Secondary language: English
Secondary title: Mechanical properties of highly flowable and self-compacting concrete mixtures
Secondary abstract: The purpose of the research in the diploma work was to determine the characteristisc of fresh concrete and mechanical properties of hardened concrete for one highly flowable and two self-compacting concrete mixtures. Self-compacting concrete mixtures were prepared from two types of aggregates, chrused aggregate and the natural river gravel, both with added limestone powder. Highly flowable mixture was prepared with chrused aggregate and with fly ash, which replaced part of the cement. All three mixtures were prepared by adding same type of superplasticizer. Characteristics of fresh highly flowable mixture was tested by slump-flow test. Properties of fresh self-compacting mixtures were evaluated by slump-flow test and L-box test. Compressive and tensile tests were cerried out on hardened concrete specimens of age 7 and 28 days. We also evaluated the stress-strain relationship at uniaxial compression and modulus of elasticity. From the tests results, we evaluated the influence of different types of aggregates and different types of added powder particles on the properties of fresh and hardened concrete.
Secondary keywords: graduation thesis;self-compacting concrete;highly flowable concrete;interaction between stress and strain;compressive strenght of concrete;modulus of elasticity of concrete;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 66 str.
Type (ePrints): thesis
Title (ePrints): Mechanical properties of highly flowable and self-compacting concrete mixtures
Keywords (ePrints): samozgoščevalni beton;lahkovgradljivi beton;sovisnosti med napetostmi in deformacijami;tlačna trdnost betona;natezna trdnost betona;elastični modul betona
Keywords (ePrints, secondary language): Self-compacting concrtete;highly flowable concrete;interaction between stress and strain;compressive strenght of concrete;tensile strenght of concrete;modulus of elasticity of concrete
Abstract (ePrints): Namen opravljenih raziskav v okviru diplomske naloge je bil določiti karakteristike svežega betona in mehanske lastnosti strjenega betona ene lahkovgradljive in dveh samozgoščevalnih betonskih mešanic. Samozgoščevalni mešanici sta bili pripravljeni iz dveh vrst agregatov, z drobljenim agregatom in z naravnim separiranim prodom, ter z dodanim deležem apnenčeve moke. Lahkovgradljiva mešanica je bila pripravljena z drobljenim agregatom in je vsebovala elektrofiltrski pepel, ki je zamenjal del cementa v vezivu. Vse tri mešanice so bile pripravljene z dodanim istim superplastifikatorjem. Karakteristike sveže lahkovgradljive mešanice smo preverili z metodo razleza s posedom, Samozgoščevalne lastnosti svežih betonov pa smo ocenili s preiskavami razleza s posedom in z L-zabojem. V strjenem stanju smo na betonskih preskušancih starosti 7 in 28 dni opravili preiskave tlačne, upogibne in cepilne natezne trdnosti, sovisnosti med napetostmi in deformacijami pri enoosni tlačni obremenitvi ter določili statični modul elastičnosti. Iz dobljenih rezultatov preiskav smo ocenjevali vpliv vključitve različnih vrst agregata in različnih vrst dodanih praškastih delcev na karakteristike svežih in strjenih betonov.
Abstract (ePrints, secondary language): The purpose of the research in the diploma work was to determine the characteristisc of fresh concrete and mechanical properties of hardened concrete for one highly flowable and two self-compacting concrete mixtures. Self-compacting concrete mixtures were prepared from two types of aggregates, chrused aggregate and the natural river gravel, both with added limestone powder. Highly flowable mixture was prepared with chrused aggregate and with fly ash, which replaced part of the cement. All three mixtures were prepared by adding same type of superplasticizer. Characteristics of fresh highly flowable mixture was tested by slump-flow test. Properties of fresh self-compacting mixtures were evaluated by slump-flow test and L-box test. Compressive and tensile tests were cerried out on hardened concrete specimens of age 7 and 28 days. We also evaluated the stress-strain relationship at uniaxial compression and modulus of elasticity. From the tests results, we evaluated the influence of different types of aggregates and different types of added powder particles on the properties of fresh and hardened concrete.
Keywords (ePrints, secondary language): Self-compacting concrtete;highly flowable concrete;interaction between stress and strain;compressive strenght of concrete;tensile strenght of concrete;modulus of elasticity of concrete
ID: 8312296