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Vpliv premera armaturne palice na sprijemnost z betonom : diplomska naloga
Kopač, Jan (Author), Saje, Drago (Mentor) More about this mentor... This link opens in a new window

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Abstract
Diplomsko delo obsega preiskave na področju sprijemnih napetosti med armaturnimi palicami in betonom. Preiskave smo opravili v skladu s standardom SIST EN 10080:2005 in sicer na betonu normalne in visoke trdnosti. V standardiziran kalup smo vstavili jekleno palico premera 20 mm ter s gumijasto cevjo zagotovili primerno sidrno dolžino. Kalupe smo nato zalili z obema vrstama betona. Preizkušance smo 28 dni hranili v vodi, nato pa smo opravili izvlečni preizkus. Armaturne palice smo s pomočjo preizkuševalne naprave izvlekli iz betona, ter sproti beležili podatke. Podatke smo uredili, ter jih prikazali v obliki grafa, ki prikazuje sprijemne napetosti v odvisnosti od zdrsa med palico in okoliškim betonom. Za zaključek pa smo rezultate primerjali s tistimi pridobljenimi na palicah s premerom 12 mm. Primerjava izvlečnih testov izvedenih na palicah 12 in 20 mm so pokazali, da pri uporabi betonov visokih trdnosti premer palice ne vpliva na sprijemnost med armaturo in betonom.

Language:Slovenian
Keywords:gradbeništvo, diplomska naloga, OG-MO, premer armaturne palice, beton visoke in normalne trdnosti, sprijemna napetost, preskušanci, izvlečni test
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2016
Publisher:[J. Kopač]
Number of pages:X, 36 str.
UDC:624.012.45(043.2)
COBISS.SI-ID:7733089 Link is opened in a new window
Views:1100
Downloads:337
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Secondary language

Language:English
Title:The influence of reinforcing bar diameter on bond between rebar and concrete
Abstract:
In this graduation thesis I captured investigation studies in the field of bond stress between reinforcement bars and concrete. Investigations were carried out in accordance with standard SIST EN 10080: 2005 on normal and high strength concrete. A steel reinforcing bar with a diameter of 20 mm was inserted into a standardized mold. We created an appropriate anchor length with a rubber tube. We then poured both types of concrete into molds. Test specimens were stored for 28 days in water and, after that, we made the pull-out test. With the help of the testing device we pulled the reinforcing bars out of the concrete and recorded the data at the same time. The data was edited and shown in a graph, which shows the bond stress according to the slip between the bar and the surrounding concrete. In conclusion, the results were compared with those obtained from the bars with diameters of 12 mm. A comparison of pull-out tests carried out on the bars of 12 and 20 mm have shown that, with the use of high strength concrete, the diameter of the bars does not affect the bond between the reinforcement and the concrete.

Keywords:diameter of the reinforcment bars, normal and high strenght concrete, bond stress, specimens, pull-out test

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