Određivanje trajnosti betona u maritimnoj okolini

undergraduate thesis

• Title (english): Concrete durability in marine environment
• Author: Filip Ivančić
• Mentor: Marijan Skazlić (mentor)
• Committee member: Ivana Banjad Pečur (predsjednik povjerenstva)
• Committee member: Ivan Gabrijel (član povjerenstva)
• Committee member: Marijan Skazlić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Materials); Zagreb
• Defense date and country: 2022-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Tema ovog završnog rada je određivanje svojstava trajnosti betona u maritimnoj okolini. rad je podijeljen na teoreski dio i eksperimentalni rad. U uvodnom dijelu obrađena problematika trajnosti betona. U idućem poglavlju objašnjene su karakteristike morskog okoliša i njegov utjecaj na beton. Nadalje, opisani su pojavni oblici klorida u betonu mehanizmi transporta klorida u betonusa posebnim naglasom na difuziju. Također je opisan proces korozije armature i formiranja pasivnog sloja na površini čelika kako bi bolje razumjeli ulogu klorida i ugljikova dioksida u koroziji čelične armature. Opisani su procesi degradacije betona i armature uzrokovani kloridima iz mora, te proces karbonatizacije betona. Obrađene su norme, postupci i aparatura za određivanje otpornosti betona na prodor klorida i prolazak plinova kroz njegovu poroznu strukturu. Na kraju, u eksperimentalnom radu ispitana svojsta trajnosti, konkretnije plinopropusnosti i difuzije klorida na 23 uzorka betona koji koristiti u izgradnji buduće trajektne luke, te su analizirani rezultati ispitivanja.

Abstract (english)

The topic of this thesis is determination of durability properties of concrete in the marine environment. This paper is divided
into theoretical part and experimental work. The introductory part deals with the issue of concrete durability. The next chapter explains characteristics of the marine environment and its impact on concrete. Furthermore, the of chlorides in concrete and the mechanisms of transport of chlorides in concrete with special emphasis on diffusion are described. Also, the process of armature corrosion and formation of passive layer on steel surface are described in order to better understand the chlorides and carbon dioxide in steel armature corrosion. The processes of degradation concrete and armature caused by chlorides from the sea are described, as well as the process of carbonation of concrete. Standards, procedures and apparatus for determining the resistance of concrete to the penetration of chlorides and the passage of gases through porous structure arediscussed. Finally, in the experimental work, the properties of durability, more specifically gas permeability and chloride diffusion on 23 samples of concrete that be used in the construction of the future ferry port were examined, and the test results analyzed.

• Keywords: trajnost betona; maritimna okolina; korozija armature; plinopropusnost; difuzija klorida.
• Keywords (english): concrete durability; marine environment; armature corrosion; gas permeability; diffusion of chlorides.
• Language: croatian
• URN:NBN: urn:nbn:hr:237:600674
• Study programme: Title: Civil Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-09-12 09:00:41