Vpliv kemijske agresije na beton pri različnih temperaturah

diplomska naloga

Boris Ronkalj (Author), Violeta Bokan-Bosiljkov (Mentor), Vlatko Bosiljkov (Thesis defence commission member), Jože Lopatič (Thesis defence commission member), Janko Logar (Thesis defence commission member), Tina Prinčič (Co-mentor)

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.

Keywords

diplomska dela;gradbeništvo;UNI;beton;elastični modul;korozija;trdnost;temperatura;

Data

Language:	Slovenian
Year of publishing:	2012
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[B. Ronkalj]
UDC:	54:691.3(043.2)
COBISS:	6122337
Views:	2957
Downloads:	407
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	ǂThe ǂinfluence of chemical aggression on the concrete at different temperatures
Secondary 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.
Secondary keywords:	graduation thesis;civil engineering;cobcrete;modulus of elasticity;corrosion;strengt;temperature;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XII, 51 str.
ID:	8726563