diplomska naloga
Anže Andrejka (Author), Violeta Bokan-Bosiljkov (Mentor), Janko Logar (Thesis defence commission member), Dejan Zupan (Thesis defence commission member), Tomo Cerovšek (Thesis defence commission member), Igor Planinc (Thesis defence commission member), Andraž Mezgec (Co-mentor)

Abstract

Učinkovitost izvedbe sanacij premostitvenih AB objektov pod prometno obremenitvijo

Keywords

diplomske naloge;gradbeništvo;sanacije;Pull-off;odtržna trdnost;

Data

Language: Slovenian
Year of publishing:
Source: Ljubljana
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [A. Andrejka]
UDC: 625.7/8:624.012.4(043.2)
COBISS: 5479777 Link will open in a new window
Views: 3252
Downloads: 488
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary title: Efficiency of RC bridges repair under traffic load
Secondary abstract: When repairing reinforced concrete bridges under traffic load contractors face high quality requirements of executing repairing works as requested by Principal. It is particulary hard to achieve appropriate bond strength of repair material when repair work are executed on underside of pavement with ongoing traffic. The first part of the diploma thesis describes a concept of repair of reinforced concrete structures and presents SIST EN 1504 standard, which covers the area of repair work. In the second, experimental part of the diploma thesis, the results of pull-of tests of repair material are presented and analyzed. Repair material was applied to the underside of concrete beams exposed to dynamic load. Concrete surface of beams, where the repair material was applied, was prepared in two different ways: with high pressure water blasting and with hand impact technique. Two repair mortars were used, both appropriate for repair work under dynamic load. Compression and flexural strength tests were also carried out on prisms prepared from repair mortars, in order to determine properties of hardened material, when it is exposed to dry or wet curing.
Secondary keywords: civil engineering;graduation thesis;repair work;Pull-Off;adhesion strength;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XII, 113 str., [2] f. zganj. pril.
Type (ePrints): thesis
Title (ePrints): Efficiency of rc bridges repair under traffic load
Keywords (ePrints): sanacija;Pull-off;odtržna trdnost
Keywords (ePrints, secondary language): repair work;Pull-Off;adhesion strength
Abstract (ePrints): Pri sanacijah armiranobetonskih premostitvenih objektov pod prometno obtežbo se izvajalci srečujejo z visokimi zahtevami glede kakovosti izvedbe, ki jih predpisuje naročnik. Ko sanacija poteka na spodnji strani voziščne konstrukcije, preko katere oziroma v bližini katere poteka promet, je še posebej težko doseči ustrezne vrednosti odtržnih trdnosti sanacijskega materiala. V prvem delu diplomske naloge je opisan pojem sanacij armiranobetonskih objektov in predstavljen standard SIST EN 1504, ki pokriva področje sanacij. V drugem, raziskovalnem delu diplomske naloge, je določena odtržna trdnost sanacijskega materiala, ki je apliciran na spodnjo stran betonskih nosilcev, ki so izpostavljeni dinamični obtežbi. Površina betonskih nosilcev, na katere je apliciran sanacijski material, je pripravljena na dva načina, z vodnim curkom pod visokim pritiskom in ročno, z udarno tehniko. Uporabljeni sta dve malti, primerni za sanacijska dela na objektih, izpostavljenih dinamični obtežbi. Opravljeni so tudi preizkusi tlačne in upogibne trdnosti sanacijskih malt, z namenom določiti lastnosti strjenega sanacijskega materiala, če je le ta izpostavljen suhi oziroma mokri negi.
Abstract (ePrints, secondary language): When repairing reinforced concrete bridges under traffic load contractors face high quality requirements of executing repairing works as requested by Principal. It is particulary hard to achieve appropriate bond strength of repair material when repair work are executed on underside of pavement with ongoing traffic. The first part of the diploma thesis describes a concept of repair of reinforced concrete structures and presents SIST EN 1504 standard, which covers the area of repair work. In the second, experimental part of the diploma thesis, the results of pull-of tests of repair material are presented and analyzed. Repair material was applied to the underside of concrete beams exposed to dynamic load. Concrete surface of beams, where the repair material was applied, was prepared in two different ways: with high pressure water blasting and with hand impact technique. Two repair mortars were used, both appropriate for repair work under dynamic load. Compression and flexural strength tests were also carried out on prisms prepared from repair mortars, in order to determine properties of hardened material, when it is exposed to dry or wet curing.
Keywords (ePrints, secondary language): repair work;Pull-Off;adhesion strength
ID: 8312154