The paper presents one aspect of the analysis of energy consumption and productivity of the manufacturing operation. As an example of the operation, the operation of turning with a single-blade tool was taken. Sustainable development in its general concept implies sustainable materials, sustainable design, and sustainable manufacturing. This paper ...

By Edin Begovic, Ibrahim Plancic, Sabahudin Ekinovic, Vedran Mizdrak

This paper presents the results of an experimental investigation into the effect of nano-silica addition on the mechanical properties and durability of concrete. Three mixes of concrete containing 0%, 2%, and 4% nano-silica by weight of cement were tested. The slump of fresh concrete as well as compressive strength, dynamic modulus of elasticity at...

By Adnan Mujkanovic, Anesa Bitić, Marina Jovanović, Nevzet Merdić, Amel Zahirović, Amna Karić

Fly ash class F from Thermal Power Plant “Stanari” was used in combination with highly plastic brick clay from Busovača to develop building bricks. The brick clay and fly ash were characterized for chemical and mineralogical composition, grain size distribution, and specific gravity. The fly ash has a higher proportion of larger particl...

By Marina Jovanović, Adnan Mujkanović, Nadira Bušatlić, Elma Selimović

Austenitic stainless steel is mostly used at high temperatures. It is known that during heating of the austenitic stainless steel with increasing temperature and time of annealing a microstructure is changed i.e. there is the precipitation of carbides followed by precipitation of secondary phases as a sigma phase. The presence of the delta ferrite ...

By Amna Hodžić, Dejana Kasapović, Almaida Gigović-Gekić, Farzet Bikić, Raza Sunulahpašić, Hasan Avdušinović

Due to the fast process of urbanization and the increase in the development of transport infrastructure, there is an increase in noise levels caused by road and railway traffic in urban areas, which represents one of the most important today's problems. The goal of this paper is to find out the current noise levels of road and railway traffic. Meas...

By Nusret Imamović, Zijad Selimović, Haris Puščul, Emina Kadušić

Due to the very complex composition of leachate wastewater, combining two or more physical, chemical, or biological processes, carried out simultaneously or sequentially, is highly needed in order to obtain effluent suitable for further discharge into sewage. In this paper, electrocoagulation coupled with synthetic zeolite (EC-NaX), electrocoagulat...

By Nediljka Vukojević Medvidović, Ladislav Vrsalović, Sandra Svilović, Mirjana Cestarić

The effect of partial replacement of natural filler by ground waste sulfur originated from the oil refining process on fresh and hardened properties of self-compacting concrete was investigated. Properties investigated were slump flow, V-funnel, L-box, and sieve segregation of fresh concrete mixes; and compressive, flexural, and bond (pull off) str...

By Milica Vlahović, Aleksandar Savić, Sanja Martinović, Tatjana Volkov Husović

Gallic acid is a phenolic acid widely spread in various plants, where it is present either in free form or as part of tannins, called gallotannins. It shows several positive effects on human health. It has different biological effects: antibacterial, antiviral, anti-inflammatory. Many scientists are showing great interest in gallic acid precisely b...

By Dejana Kasapović, Fehim Korać, Farzet Bikić

Aluminium and its alloys have excellent corrosion resistance. When aluminium is exposed to the atmosphere, a thin invisible oxide Al2O3 is formed, protecting the metal from further oxidation. Compared to pure metals, alloys can have higher corrosion resistance depending on the content of certain alloying elements. Various substances such as organic...

By Safija Herenda, Selma Burović, Jelena Šćepanović, Darko Vuksanović

Some specific aspects in the state of art regarding the improvements related to I-beams and parallel flanged I-beams production are presented in this paper. One practical solution in the variety of the conversions of the classical to the universal rolling stands is described in some more detail, as well as an overview of the latest improvements in ...

By Faik Uzunović, Omer Beganović, Lamija Sušić