Materijali na bazi cementa i gipsa za pasivnu zaštitu od požara

master's thesis

• Title (english): Cement and gypsum - based materials for passive fire protection
• Author: Kristina Ravlić
• Mentor: Marija Jelčić Rukavina (mentor)
• Committee member: Ivana Banjad Pečur (predsjednik povjerenstva)
• Committee member: Ana Baričević (član povjerenstva)
• Committee member: Marija Jelčić Rukavina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2023-02-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Požarom se smatra svako sagorijevanje koje nije pod kontrolom i pri kojem može doći do ozljede ljudi i uništavanja materijalnih dobara. Prema europskim normama koje je Hrvatska prihvatila ulaskom u Europsku uniju, klasificiran je kao izvanredno opterećenje. Jedan od temeljnih zahtjeva za građevinu jest sigurnost u slučaju požara. Zbog tog je potrebno promišljati o mogućim požarnim opterećenjima već u vrijeme projektiranja konstrukcija. Kako bi se konstrukcije zaštitile od požara koriste se aktivni i pasivni sustavi zaštite. Pasivni sustavi zaštite, u vrijeme kada su konstrukcijski elementi izravno izloženi požarnom opterećenju, to opterećenje umanjuju. Pasivni sustavi zaštite na bazi cementa i gipsa funkcioniraju na način da oslobađaju zadržanu vodu u obliku vodene pare čime umanjuju temperaturu kojoj je konstrukcijski element izložen (endotermna reakcija). Na njihovo ponašanje utječe sastav, kao i dodaci materijalu. Svaki zaštićeni konstrukcijski element se ispituje prema europskim normama i definira mu se razred vatrootpornosti prema kriterijima nosivosti, cjelovitosti i izolacije. Pasivni sustavi zaštite od požara na bazi cementa i gipsa dijele se na žbuke, premaze i ploče. Ovisno o vanjskim čimbenicima, ekonomskim faktorima i mogućnostima odabire se sustav koji najviše odgovara potrebnim uvjetima, a neki od primjera mogu se pronaći u daljnjem tekstu.

Abstract (english)

A fire is considered as burning that is out of control and can cause death of people and destruction of material goods. According to the European norms that Croatia accepted upon joining the European Union, fire is classified as extraordinary load. One of the basic requirements for a building is safety in case of fire. For this reason, it is necessary to think about possible fire loads already at the start of every project. In order to protect structures from fire, active and passive fire protection systems are used. Passive protection systems, when structural elements are directly exposed to fire load, reduce that load for some time. Passive protection systems based on cement and gypsum function in such a way that they release water in the form of water vapor, thereby reducing the temperature at which the structural element is exposed (endothermic reaction). Their behavior is influenced by the composition, as well as by additions to the material. Each protected structural element is tested according to European standards and its fire resistance class is defined according to the criteria of load-bearing capacity, integrity and insulation. Passive fire protection systems based on cement and gypsum are divided into plasters, coatings and panels. Depending on external factors, economic factors and possibilities, the system that best suits the necessary conditions is selected. Some of the examples can be found in the following text.

• Keywords: cement; gips; pasivna zaštita; žbuke; premazi; ploče
• Keywords (english): cement; gypsum; passive fire protection; plasters; coatings; boards
• Language: croatian
• URN:NBN: urn:nbn:hr:237:025209
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-03-16 10:03:07