The analysis and use of black steel slag in bituminous mixtures

摘要

In my diploma thesis I dealt with the use of black steel slag in road construction. In the introductory part of my work I discussed the general characteristics of the materials used in road construction and later on in the paper I focused exclusively on black steel slag. I described the history of the use of slag in the construction industry, various types of iron and steel slags, and the processing of black and white steel slag. I was interested in positive and negative characteristics of slag and its influence on the properties of asphalt roads. In exploring these properties I used technical articles from Slovenia as well as from abroad and they were of tremendous help to me. In addition, I described and analyzed the good practices from Germany, Great Britain and Croatia.udThe main part of the thesis was the analysis of the results of bituminous mixes with the slag grains. Data were acquired in the company Gorenjska gradbena družba (hereinafter GGD) and its subsidiary Cestno podjetje Kranj. I separated the data into two groups. In the first set, I compared and analyzed bituminous mixtures with natural eruptive and carbonate grains and grains of slag. In the second part I dealt with bituminous mixtures with grains of slag, for which I used two different types of bitumen. Inudboth sets I analyzed the basic properties of bituminous mixtures and properties of the mixture resistance to permanent transformation. In the conclusion of the thesis I checked the differences between the prices of different bituminous mixtures.