Qualitative characteristics of bauxite deposit „Oštrelj“ are defined through extensive laboratory testing of chemical and mineralogical-petrographic composition, and geomechanical characteristics. Chemical composition has shown that it is a relative poor bauxite with low Al/Si module (2,28). Low values of Al/Si module are result of lower Al2O3 conc...

By Elvir Babajić, Zehra Salkić, Alisa Babajić, Milan Stević, Miodrag Jovović

The paper present a review of the geotechnical characteristics of the terrain at the location of the bridge No. 1 of motorway Lašva – Donji Vakuf, subsection interchange Lašva – interchange Kaonik.Also, given the suggestion of foundation structures for each column, as well as the calculated bearing capacity...

By Zlatan Talić, Đenari Ćerimagić

In this article are presented the procedures and the results of open pit optimal contour "Delici" choice near Ugljevik, Republic of Srpska. By using of LG 3D algorithm for optimization in the Whittle FourXTM is determined a series of open pit shales based on the various income factors (Revenue factor) with iteration of 0.03 of change in coal prices...

By B. Lazar Stojanovic, J. Petar Tomic, Z. Mladen Stevic

Wells conditions are different in wide range of temperature and depth. Cement slurries in such conditions have to remain pumpable and after setting to stay homogenous in production well life. For cementing operations in wide range of temperature and pressure and to accommodate cement slurries for individual well requirements more than 50 additives ...

By Zvonimir Bošković, Vladimir Čebašek, Nebojša Gojković

The key problem of water utility companies in Bosnia and Herzegovina in the fight to reduce the level of non revenue water (NRW) is the lack of a unique methodology with clearly defined steps. The aim of this paper is to show the possibility of accepting the concept for the control of water loss in water supply systems, which provides the Internati...

By Dalibor Vlaški, Goran Orašanin

The composite materials prepared from clay and iron oxides in different weight ratios and temperatures denoted as A85 and E20 were heated at 300 °C in reductive atmosphere and up to 650 °C in inert atmosphere. The changes in the structure, surface and pore properties were examined by XRD, N2 adsorption method and TG, DTA method. The morphology was ...

By Annamária Mockovčiaková, Zuzana Danková, Jaroslav Briančin

The noise is meant by all unwanted sounds. As the years were passing by the noise has become more and more intense. European Union adopted Directive 2002/49/EC recognizing noise pollution problem. During the processes of planning and designing, and after the construction of new roads, it is of major importance to determine the level of traffic nois...

By Mirza Pozder

Economic analysis is the key requirement of EU Water Framework Directive. On a level of river basin area, economic analysis includes three dimensions: 1. economic characterization of water use: current and future projected economic importance of capacities and potentials of water resources; 2. program of measures for achieving good water status: co...

By Mesud Adžemović, Mirjana Bartula, Jordan Aleksić

Presence of certain polluting substances in the atmosphere causes disturbance of natural pH values that leads to acidic precipitation occurrence. Measurement of pH of precipitation in the area of the town of Bijeljina has been done since 2008 and the sampling has been performed at three points. This paper presents measurement results of surveys for...

By Mira Vidaković, Neđo Đurić, Petar Savković, Radenko Babić

The use of modern global navigation system (GPS-GNSS) is massively being used in the modern research. Therefore, the use of these methods in science can do much to facilitate scientific research work. In this scientific work we analyzed the database obtained by the GPS device and field testing engineers, and the data is used to produce maps of the ...

By Nermin Taletović, Dean Osmanović, Jasmin Isabegović