Fuels are substances that release heat energy during combustion due to the oxidation process that occurs. In order for a substance to serve as fuel, it is important that it has a high calorific value, which is most affected by the carbon content. Sulfur has a very small effect on this characteristic of the fuel but is considered as a negative compo...

By Lamija Mujkanović, Nadira Bušatlić, Nedžad Haračić, Nevzet Merdić

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

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

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

This paper presents an experimental study to evaluate the possibility of CEM IV 42,5N producing by increasing the specific cement surface from 3180 to 3850 cm2 /g. In this paper, fly ash is used as a cement admixture because fly ash possesses both hydraulic and pozzolanic properties. If one part of the clinker, as a major cement admixture, is repla...

By Nevzet Merdić, Nedžad Haračić, Ilhan Bušatlić, Nadira Bušatlić, Amna Karić

This article talks about the possibility of production of portland-composite cement in cement plant Kakanj in accordance with the requirements of EN 197-1. By that standard cement class 52,5N must have a compressive strenght greater or equal 20MPa after 2 days, and after 28 days greater or equal 52,5MPa. Portland-composite cement is ...

By Nevzet Merdić, Ilhan Bušatlić, Nedžad Haračić, Nadira Bušatlić

Cement is a mineral hydraulic binder which is formed by sintering (heat treatment) primary minerals of cement clinker at a sintering temperature. In the cement composite only cement releases heat by reaction with water, and image about the amount of heat or about temperature of solid concrete is obtained by determination of the heat of hydration of...

By Ilhan Bušatlić, Nevzet Merdić, Nedžad Haračić, Amna Karić, Sumeja Hibović

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 paper the possibility of using wood paulownia (lat. Paulownia elongata) as a completely new type of alternative fuel has been analyzed. Its applicability in cement industry in...

By Zehrudin Osmanović, Nedžad Haračić, Jelica Zelić

When considers about design/development of products then it must be objectify one of the following aspects, development of completely new products, development of new product lines, addition of existing product lines, improvements and revisions of existing products, repositioning and cost reduction. When you design a product, it is necessary to mak...

By Zehrudin Osmanović, Nedzad Haračić

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