Dr. Olivera M Đokić
Laboratory for stone and stone aggregates, Highway Institute Belgrade, Belgrade, Beograd, Serbia
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Academic Career Length
15Years (2012-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 December 2015 in Construction and Building Materials
Journal Article
Olivera M ĐokićVMVesna Matović
Vesna MatovićSESuzana Erić
Suzana Erić
KŠKristina Šarić
Kristina Šarić
Journal Article
Olivera M Đokić
Aleksandar Radević
Dimitrije Zakić
Bozidar DjokicThis study investigates the feasibility of using recycled concrete aggregate (RCA) as a partial substitution of natural aggregate in pavement engineering. Despite RCA’s good properties, such as polishing value and freeze-thaw resistance, its use is limited by low resistance to fragmentation and high-water absorption. This paper parent the experimental results of mineralogical-petrographic and physical-mechanical properties of RCA, natural stone (dolerite) and their combination (RCA content—15%, 30%, 45%, and 60%). The tested granular mixtures showed good resistance to fragmentation and wear (LA 22–27%, MDE 14–15%), as well as satisfactory Polished Stone Value of 55–57, which means they can be used in different layers of pavement structures. According to the obtained testing results, the application of RCA is possible in different flexible and rigid pavement layers and for various traffic loads.
Journal Article
SFSandra Filipović
Sandra FilipovićOlivera M ĐokićAleksandar RadevićDimitrije ZakićCopper slag, a by-product of the pyrometallurgical process used for obtaining copper from copper ore in Bor, Serbia, contains mainly silicon, iron, calcium, and aluminium oxides. Due to such properties, it is disposed of in landfills. Despite the favourable technical properties copper slag aggregates possess, such as low-water absorption (WA24 0.6%), low resistance to fragmentation (LA 10%), and low resistance to wear (MDE 4%), its use in the construction industry is still limited. The results of testing the technical properties of copper slag aggregates (CSAs) as a potential replacement for natural river aggregate (RA) are presented in this paper. The experiments included tests on three concrete mixtures with partial replacement of coarse natural aggregate with copper slag. The replacement of RA particle sizes of 8/16 mm and 16/31.5 mm with CSA in the amount of 20% + 50% and 50% + 50% resulted in an increase in the compressive strength of 12.4% and 10.5%, respectively. The increase of CSA content led to a decrease in water penetration resistance and salt-frost resistance of concrete, whereas the resistance to chloride ion penetration did not change significantly.
1 January 2013 in Mining and Metallurgy Engineering Bor
Journal Article
Tailing dump of the mine Grot mine with more than 5.5 million tons of floated material is the highest altitude dump in Serbia. Vegetation is not developed on it at all. The behavior of heavy metals in the flotation tailing dump has recently been analyzed in the literature. Mineralized dust is observed on the surrounding soil demonstrating its recent pollution. This land is tilled in a primitive way. The analysis of soil shows the presence of heavy metals of anthropogenic origin. The concentrations of these materials vary with the configuration of terrain and weather conditions. Lead is the most toxic of found heavy metals in soil.
30 October 2012 in Bulletin of Engineering Geology and the Environment
Journal Article
Olivera M ĐokićVMVladimir Milicevic
Vladimir Milicevic13 December 2018 in Bulletin of Engineering Geology and the Environment
Journal Article
Olivera M ĐokićMIMarijana Nikolić Ivanović
Marijana Nikolić IvanovićSTSimo Tošović
Simo Tošović
SSSuzana Stefanović
Suzana Stefanović
BMBratislav Milić
Bratislav Milić
ARAleksandra Rosić
Aleksandra RosićAbout Me
Since 1996, I have worked at the Highway Institute, Belgrade, as a geologist and senior engineer specialising in natural stone and aggregates for road, railway, and other construction applications. I have prepared approximately 3,500 expert reports covering the petrographic and technical assessment of stone resources, aggregates for asphalt and concrete, unbound mixtures, railway ballast, armourstone, architectural stone, and cores from potential new deposits.
My work combines laboratory testing, petrographic analysis, interpretation of engineering properties, technical consultancy, problem-solving, interlaboratory comparisons, and proficiency testing. I have authored and co-authored peer-reviewed scientific papers and presented research at national and international conferences.
Since 2017, I have served as an expert evaluator for the European Commission under Horizon 2020 and Horizon Europe, through EISMEA and CINEA, focusing on transport infrastructure, construction materials, sustainability, circular economy, and project implementation.
Selected publications:
https://www.researchgate.net/profile/Olivera-Dokic
Professional presentations:
https://www.youtube.com/@OliveraDjokicGeolog
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