Mehanske lastnosti lahkovgradljivega in samozgoščevalnih betonov

diplomska naloga

Maša Kušar (Avtor), Violeta Bokan-Bosiljkov (Mentor), Tomo Cerovšek (Član komisije za zagovor), Aleksander Srdič (Član komisije za zagovor)

Povzetek

Ključne besede

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

Podatki

Jezik:	Slovenski jezik
Leto izida:	2012
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[M. Kušar]
UDK:	69:625.821.5(043.2)
COBISS:	5746273
Št. ogledov:	2080
Št. prenosov:	605
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Mechanical properties of highly flowable and self-compacting concrete mixtures
Sekundarni povzetek:	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.
Sekundarne ključne besede:	graduation thesis;self-compacting concrete;highly flowable concrete;interaction between stress and strain;compressive strenght of concrete;modulus of elasticity of concrete;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	X, 66 str.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Mechanical properties of highly flowable and self-compacting concrete mixtures
Ključne besede (ePrints):	samozgoščevalni beton;lahkovgradljivi beton;sovisnosti med napetostmi in deformacijami;tlačna trdnost betona;natezna trdnost betona;elastični modul betona
Ključne besede (ePrints, sekundarni jezik):	Self-compacting concrtete;highly flowable concrete;interaction between stress and strain;compressive strenght of concrete;tensile strenght of concrete;modulus of elasticity of concrete
Povzetek (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.
Povzetek (ePrints, sekundarni jezik):	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.
Ključne besede (ePrints, sekundarni jezik):	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