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Vpliv kemijske agresije na beton pri različnih temperaturah : diplomska naloga
Ronkalj, Boris (Author), Bokan-Bosiljkov, Violeta (Mentor) More about this mentor... This link opens in a new window, Prinčič, Tina (Co-mentor), Bosiljkov, Vlatko (Thesis defence commission member), Lopatič, Jože (Thesis defence commission member), Logar, Janko (Thesis defence commission member)

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Abstract
V diplomski nalogi smo spremljali, kako se mikrostruktura betona spreminja zaradi izpostavljenosti kislinskemu okolju pri normalni in povišani temperaturi. Te spremembe smo ocenili s spreminjanjem dinamičnega modula elastičnosti s časom. Določili smo tudi tlačno trdnost betona in njegovo odpornost proti prodoru vode. Dobljeni rezultati so bili različni za različne vrste obravnavanih betonov. V študiji smo zajeli dve vrsti agregata ter štiri različna veziva, kar pomeni osem različnih sestav betona. Kot referenčno vezivo smo izbrali čisti Portland cement (CEM I), v ostalih primerih pa smo dodali še mikrosiliko, elektrofiltrski pepel in/ali žlindro. Eksperimentalni rezultati so pokazali, da je najbolj primerno vezivo za kislinsko agresijo, ki je bila predmet raziskav, žlindrin cement z dodatkom elektrofiltrskega pepela in mikrosilike.

Language:Slovenian
Keywords:diplomska dela, gradbeništvo, UNI, beton, elastični modul, korozija, trdnost, temperatura
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2012
Publisher:[B. Ronkalj]
Number of pages:XII, 51 str.
Place:Ljubljana
UDC:54:691.3(043.2)
COBISS.SI-ID:6122337 This link opens in a new window
Views:2591
Downloads:354
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Secondary language

Language:English
Title:The influence of chemical aggression on the concrete at different temperatures
Abstract:
In this thesis, we were following changes of the concrete microstructure due to its exposure to acidic environment at normal and elevated temperatures. These changes were estimated by the monitoring changes of concrete’s dynamic modulus of elasticity with time. We also determined compressive strength of concrete and its resistance to the penetration of water under pressure. The obtained results were different for different concrete mixtures under consideration. In the study we used two types of stone aggregate and four different binders which give eight different concrete mixtures. As a reference binder we selected pure Portland cement (CEM I), and to the other three binders we added silica fume, fly ash and/or slag to the clinker. Experimental results showed that the most adequate binder for an acidic environment under consideration is slag cement with the addition of fly ash and silica fume.

Keywords:graduation thesis, civil engineering, cobcrete, modulus of elasticity, corrosion, strengt, temperature

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