diplomska naloga
Blaž Juvanec (Author), Drago Saje (Mentor), Jože Lopatič (Thesis defence commission member)

Abstract

Diplomsko delo obsega preiskave na področju sprijemnih napetosti med visokotrdnim vlaknastim betonom in armaturo. Za potrebe preiskave smo zasnovali izvlečni test armaturne palice iz betona po navodilih, ki jih podaja standard SIST EN 10080:2005 v dodatku D. Držali smo se navodil za izdelavo preizkušancev ter samega poteka preizkusa. V lesenem kalupu smo izdelali kocke z robom 20 cm, ki smo jim skozi sredino vgradili armaturno palico s premerom 12 mm. 28 dni po betoniranju smo palico s pomočjo preizkuševalne naprave izvlekli iz betona, sproti pa smo beležili rezultate. Sprijemno napetost smo določili kot strižno napetost, ki deluje na obodu armaturne palice sidrane v betonu. Preizkusili smo tri različne mešanice visokotrdnega betona z različnim prostorninskim deležem jeklenih ali polipropilenskih vlaken. Za vsako mešanico smo izdelali po tri preizkušance. Eksperimentalni rezultati raziskave so pokazali, da vsebnost vlaken v betonu povečuje sprijemno trdnost med betonom in armaturo.

Keywords

gradbeništvo;diplomska naloga;VSŠ;sprijemna napetost;vlaknasti beton;visokotrden beton;izvlečni test;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [B. Juvanec]
UDC: 624.012.4(043.2)
COBISS: 7255905 Link will open in a new window
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Downloads: 554
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Other data

Secondary language: English
Secondary title: Bond between fibre reinforced concrete and reinforcing bars
Secondary abstract: The following thesis covers the researches on bonds between fibre reinforced high strength concrete and reinforcing bars. For the purpose of research we had conceived a pull-out test specified on directions in standard SIST EN 10080:2005 in annex D. This standard defines how the specimens and the test are conducted. In a wooden mold we made a cube-shaped concrete specimens with an edge of 20 cm and a rebar with a diameter of 12 mm embedded through the middle. After 28 days the pull-out tests were carried out on hardened concrete specimens using a special testing machine. The bond stress was determined as the stress acting on the circumference of a reinforcing bar. We tested three different types of highstrength concrete which were made with different proportion of steel and polypropylene fibres. Three specimens were made for each type of concrete. The experimental results showed that the fibre reinforcment significantly increased the bond strength between concrete and reinforcement bars.
Secondary keywords: bond stress;fibre reinforced concrete;high strength concrete;pull-out test;
File type: application/pdf
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 52 str.
ID: 9057016