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

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

Today there is a growing research activity in order to investigate the possibility of using various waste or alternative materials in the cement and other industries. In this regard, granulated blast furnace slag is a significant addition to the metallurgical cement type CEM III. Cements based on blast furnace slag consist of a mixture of cement cl...

By Nedzad Haračić, Nevzet Merdic, Ilhan Bušatlić, Zehrudin Osmanović, Jelica Zelić

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

The expansion of the transport sector has produced a number of negative factors that constantly threaten the quality of life and economy of the country. Studies have shown that motor vehicles can pollute the environment and economy of country with more than 50% compared to other pollutants. Also, automobile traffic reduces the quality of the enviro...

By Dragana Agić, Fuad Klisura, Muhamed Barut

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