POSSIBILITY OF PRODUCTION OF METALLURGICAL CEMENT TYPE CEM III/A 42.5N IN CEMENT PLANT KAKANJ
This paper examines the possibility of producing metallurgical cement type CEM III/A 42.5N at theKakanj Cement Factory. The tested samples contain respectively 46%, 41%, and 38% of granulatedblast furnace slag and the rest is clinker. According to the test results, all cement samples meet theEN 197-1 standard in terms of physical-mechanical propert...
By Nevzet Merdić, Nedžad Haračić, Ilhan Bušatlić, Nadira Bušatlić, Adnan Mujkanovic
SOME ASPECTS OF A METALLURGY CONSULTING IN THE INDUSTRIAL TRANSITION OF B&H
Some specific aspects of metallurgy consulting in the industrial transition of Bosnia andHerzegovina are presented in this paper. The theoretical part of the paper is mostly concerned witha short overview of ZELJEZARA ZENICA cum ARCELORMITTAL-ZENICA (AMZ) product-mixand the facilities transition, as an example of the a.m. transition, although these...
By Faik Uzunović
NDT TESTING AND DETERMINATION OF THE STATE OF THE MATERIALS OF THE HEADERS OF THE BOILER UNIT 5 IN THE THERMAL POWER PLANT KAKANJ
In order to examine the state of critical components of the boiler of Unit 5 of Kakanj Thermal Prema wer Plant, headers were tested in order to undertake appropriate technological measures and activities on the basis of insight into the current state of affairs, and to make recommendations for further exploitation. From first commiss...
By Armin Husika, Belma Fakić, MIlenko Rimac
PARTIAL REPLACEMENT OF CEMENT WITH CALCINED CLAYS FROM CENTRAL BOSNIA
Two clays from deposits located in the region of Central Bosnia, and kaolin obtained from a localspark plug and technical ceramics factory were calcined at 800, 900, and 1000 ºC. The pozzolanicactivity of calcined raw materials was determined using the P test. Calcined clay from the depositBilalovac showed slightly better reactivity compared t...
By Marina Jovanović, Adnan Mujkanovic, Nadira Bušatlić, Nedžad Haračić, Amina Čaušević
DEVELOPMENT OF NEW CEMENT TYPE CEM II/C-M ACCORDING TO EN 197-5
According to new EN 197-5 is possible to combine clinker with blast furnace slag, silica fume,pozzolana, fly ash, burnt shale, and limestone from 36 – 50% while clinker content should be from50 – 64%. In this paper are presented results of laboratory testing concerning CEM II/C-M(S+W) production where a sample is prepared by mixing 50% ...
By Nedžad Haračić, Nevzet Merdić, Ilhan Bušatlić, Nadira Bušatlić
CALCULATION OF THERMAL CONDUCTIVITY FOR CRYSTALLINE NANOSTRUCTURES
We have introduced a theory for the calculation of thermodynamic characteristics for somecharacteristic nanostructures (ultrathin films and superlattices), using the adapted method of twotimetemperature Green's functions. In this paper, we have determined the coefficient of thermalconductivity using the definition of free energy and then compared t...
By Siniša M. Vučenović, Jovan P. šetrajčić
ELECTRICAL PROPERTIES OF GRANULAR METALS
Metallic materials in granular packings show different electrical properties from their bulkcounterparts. In this paper, we investigate the temporal evolution of the electrical conductivity ofgranular metals. We use metallic beads arranged in different one-, two- and three-dimensionalensembles through which different constant currents are injected....
By Maja Đekić, Ajla Karić, Amra Salčinović-Fetić, Melisa Baždar, Belma Husković, Dijana Dujak, Diana Ćubela
THE EFFECT OF CYSTEINE ON THE CORROSION CHARACTERISTICS OF BIOALLOY
Many alloys exhibit the shape memory effect, but only the Cu-Al-Zn, Cu-AI-Ni, and Ni-Ti alloysare presentand of commercial importance. The greatest use of these alloys is in biomedicine(filters, orthodontic implants, guide wires for catheters, etc.). Shape-memory alloys may be foundin sensors in automobiles, consumer products, and generally in smar...
By Safija Herenda, Merima Begović, Edhem Hasković, Vanja Asanović
INVESTIGATION OF CUTTING CONDITIONS INFLUENCE ON SURFACE ROUGHNESS DURING MQL MACHINING OF STEEL
In the paper, the influence of the cutting conditions (cutting speed, feed, and depth of cut) duringthe machining of the cylindrical steel part on the surface roughness (average surface roughness-Ra) is analysed using experimental investigation. The material used in the full factorialexperimental investigation was C45 steel, a diameter of 50 mm, ma...
By Tarik Gazić, Sabahudin Ekinovic, Edin Begović, Ibrahim Plančić
INFLUENCE OF Na2SiO3/NaOH RATIOS ON THE COMPRESSIVE STRENGTH OF FLY ASH BASED GEOPOLYMERS FROM THERMAL POWER PLANT STANARI IN BIH
In this paper, the influence of Na2SiO3 /NaOH ratio on the compressive strength of fly ash - based geopolymers was tested. The fly ash from thermal power plant Stanari near Doboj, BiH is used.The ratio of alkali activator to fly ash (AA / FA ratio) was constant in all samples and it was 0.8. A 12M NaOH solution was used. The heat treatment temperat...
By Nadira Bušatlić, Ilhan Bušatlić, Nevzet Merdić, Dženana Smajić-Terzić