<p>U disertaciji su prikazani rezultati sopstvenog eksperimentalnog<br />istraživanja sulfatne otpornosti betona sa recikliranim agregatom.<br />Istraživanje je zasnovano na komparativnoj analizi dve grupe betona koje<br />se razlikuju u krupnom agregatu, a u okviru kojih su varirani dve vrste<br />cementa i dva vodocementna faktora. Sulfatna otpornost je proveravana<br />nakon 3 i 6 meseci boravka u 5% Na2SO4 i u 5% MgSO4. Na očvrslom betonu<br />ispitivani su kapilarno upijanje vode, promena dužine uzoraka, čvrstoća<br />pri pritisku i urađene su mikrostrukturne analize: MIP, SEM, BSE/EDS,<br />XRD i FTIR. Istaknuto je da se primenom krupnog agregata od recikliranog<br />betona i veziva odgovarajućeg mineraloškog sastava mogu dobiti<br />konstrukcijski betoni, odnosno betoni sa zadovoljavajućim mehaničkim<br />karakteristikama, ali i sa zadovoljavajućom trajnošću sa aspekta<br />sulfatne korozije.</p> / <p>This paper presents the experimental research results of the sulphate resistance of<br />concrete with recycled aggregate. The research is based on a comparative analysis of<br />two groups of concrete that differ in coarse aggregate types. Within these two concrete<br />groups, two types of cement of the same class and two water/cement ratios have been<br />varied. Sulphate resistance was examined after 3 and 6 months of immersion in 5%<br />Na2SO4 and 5% MgSO4. Capillary water absorption, sample length change and<br />compressive strength were studied in hardened concrete and the following<br />microstructural analyzes were performed: MIP, SEM, BSE/EDS, XRD and FTIR. It has<br />been found that structural concrete with apppropriate mechanical properties as well as<br />with satisfactory durability from the aspect of sulphate corrosion can be obtained by<br />combination of a coarse recycled concrete aggregate and a binder of an appropriate<br />mineralogical composition.</p>
| Identifer | oai:union.ndltd.org:uns.ac.rs/oai:CRISUNS:(BISIS)104955 |
| Date | 24 October 2017 |
| Creators | Bulatović Vesna |
| Contributors | Malešev Mirjana, Radeka Miroslava, Radonjanin Vlastimir, Topličić-Ćurčić Gordana, Grdić Zoran |
| Publisher | Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, University of Novi Sad, Faculty of Technical Sciences at Novi Sad |
| Source Sets | University of Novi Sad |
| Language | Serbian |
| Detected Language | English |
| Type | PhD thesis |
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