Flotation tailings represent the sources of pollution due to degradation of the areas in the vicinity of industrial facilities, raising dust that pollutes the air and penetration of contaminated water into water courses. Flotation tailings Bor, which was the subject of research in this paper, contains copper and is, therefore, a pote...

By Nada Štrbac, Aleksandra Mitovski, Miroslav Sokić, Ivan Mihajlović, Dragana Živković, Ljubiša Balanović

The study presents the results of researching and conquering the technology of gravity bottom pouring of cooper alloys in water cooled moulds. The new approach in this procedure is a specially projected gating system which enables the gating of liquid metal without any interruptions. Thanks to the skimmer inside the gating system, as...

By Bogić Vlaović, Zagorka Aćimović, Marko Pavlović, Ljubiša Andrić

During the solidification of continuously cast ingots, thermally induced stresses generate casting errors as hot cracks, bending or residual stresses. Contraction mechanism and shrinkage due to solidification of the alloy which is in a pasty state induce occurrence of the above mentioned defects. Simulation of thermo - mechanical pro...

By Ana Beroš, Ivica Buljeta

Finite element simulations of a fixed-ratio mode-mixity test (single configuration) are performed using cohesive zone model. Different simulation parameters are varied: automatic stabilisation, cohesive element viscosity and mesh size. A global and local approach are presented and used for calculation of energy release rate contribution from mode I...

By Josip Kačmarčik, Aleksandar Karač

In this paper is presented influence way of preparing steel reinforcement on rate of corrosion steel reinforcement in cement mortar. Reinforcements were prepared mechanically and chemically. Testing of corrosion of reinforcing steel in cement mortar is executing on the measuring device which consists of an electrochemical cell and potentiostat/galv...

By Farzet Bikić, Mirsada Rizvanovic

The paper discusses the 3D printing technology and its impact on current industry practice. These are the advantages and the problems that must be solved to make this technology has become the new industry practices, as well as its impact on the development of materials for this technology with a special focus on metallic materials, respectively me...

By Diana Ćubela, Almaida Gigović-Gekić

The changes of optical properties under boundary presence in molecular crystal nanofilm were theoretically investigated in this work. The dispersion law and states of excitons as well as their space distribution along boundary direction have been determined using adjusted Green’s function method and also by combined analytical and numerical c...

By S.M. Vučenović, B. Škipina, S.S. Pelemiš Pelemiš, D. Rodić, I.J. Šetrajčić, S. Armaković, J.P. Šetrajčić

This paper presents results that prove the existence reactions of chlorides binding to aluminates, analyzing monochloroaluminate-hydrate product of these reactions. It is also proven to increase the temperature been moving the balance of this reactions to the right. The obtained results are significant, considering the aspect of preventing corrosio...

By Farzet Bikić, Mirsada Rizvanovic

One of the first tension resistant materials that is used to build structures is wood. It is highly anisotropic material. The strength of wood in the fiber direction is relevant for dimesioning. From the economic point of view necessity of strengthening the damaged wooden structures is questionable. Given that this is a light material, suitable for...

By Amir Čaušević, Nerman Rustempašić, Nadira Kuljuh-Bolić

The problem of deteriorated air quality in the area of Zenica is primarily due to the emission of harmful substances from industrial and thermal power plants, local boilers, and then from road traffic, which has initiated various studies to analyze and evaluation of emissions and their impact on air quality, and finding solutions for improve and pr...

By Jusuf Borić, Šefket Goletić