diplomska naloga
Nejc Gašperič (Avtor), Violeta Bokan-Bosiljkov (Mentor), Janko Logar (Član komisije za zagovor), Janez Žmavc (Član komisije za zagovor)

Povzetek

Vpliv zrnavostne sestave agregata in vrste superplastifikatorja na reološke lastnosti svežega betona

Ključne besede

gradbeništvo;diplomska dela;UNI;samozgoščevalni beton;polikarboksilatni superplastifikator;polifosfonatni superplastifikator;zrnavostna sestava;vodo-cementno razmerje;reologija;koaksialni reometer;strižna napetost na meji tečenja;plastična viskoznost;razlez s posedom;izotermna kalorimetrija;hidratacijska toplota;naraščanje tlačne trdnosti s starostjo;

Podatki

Jezik: Slovenski jezik
Leto izida:
Izvor: Ljubljana
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: [N. Gašperič]
UDK: 539.411:620.173:691.3(043.2)
COBISS: 6261345 Povezava se bo odprla v novem oknu
Št. ogledov: 2208
Št. prenosov: 615
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 aggregate grain size distribution and superplasticizer type on fresh concrete rheology
Sekundarni povzetek: This thesis presents the investigation of the rheological properties of fresh self-compacting concrete and heat development due to binder hydration. Heat of hydration was also correlated with the increase of compressive strength in concrete. Rheological investigations were performed using a ConTec Viscometer 5 coaxial rheometer and a standard and modified slump-flow test method. The purpose of the investigation was to determine the influence of the aggregate grain size distribution, water-cement ratio and the amount and type of superplasticizer on the properties of fresh self-compacting concrete mixtures. We strived to obtain a concrete mixture with the best self-compacting properties in fresh state by varying the input components according to a predetermined rule (parametric study). In the framework of the study two different types of superplasticizers were used – the polycarboxylate ether based and the polyphosphonate based superplasticizer. A comparison of their effects on the properties of fresh concrete and its hydration and hardening process was made. Using a C3 Analysentechnique MC - Cal/100 isothermal calorimeter the hydration heat flux and the total amount of released hydration heat were observed. The obtained results are shown in relation to the results of compressive strength tests of concrete at a certain age.
Sekundarne ključne besede: graduation thesis;civil engineering;self-compacting concrete;polycarboxylate ether based superplasticizer;polyphosphonate based superplasticizer;grain size distribution;water-cement ratio;rheology;coaxial rheometer;yield value;plastic viscosity;slump-flow;isothermal calorimetry;heat of hydration;increase of compressive strength with time;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Diplomsko delo
Komentar na gradivo: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani: XI, 74 str.
Ključne besede (UDK): mathematics;natural sciences;naravoslovne vede;matematika;physics;fizika;physical nature of matter;fizikalna zgradba snovi;strength;resistance to stress;trdnost;trdnost pri obremenitvah;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;materials testing;commercial materials;power stations;economics of energy;preiskava materiala;blagoznanstvo;energetske centrale;energetika;applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;building (construction) trade;building materials;building practice and procedure;gradbeništvo;gradbeni materiali;gradbene obrti in dela;building materials;building components;gradiva;gradbeni [konstrukcijski] deli;
ID: 81096