Kalinovskaya N., Al-Musavi K., Kuznetsov D.
https://doi.org/10.35579/2076-6033-2020-12-08
ABSTRACT
In the process of enrichment and smelting of metals, technological wastes (slags, sludge, dust, scale and others) are generated, the amount of which is calculated in hundreds of millions of tons. One of the local metallurgical waste is granulated blast-furnace slag, which, after grinding, acquires the hydraulic properties and can be used as a component of a binder. The results of studying the properties of blast-furnace slag of Severstal Iron and Steel Works (Cherepovets, Russia), namely the chemical and phase composition of the provided slag samples, as well as the index of its activity according to EN 15167, depending on the fineness of grinding are presented. At this stage of slag research, there are no obstacles to using slag from Severstal as a binder component in cement systems. It is shown that from the point of view of compressive and bending strength, as well as the spreading of a standard cone, which indirectly characterizes the water-holding capacity of the binder, the fineness of grinding 3500...4000 cm2/g is preferable. The use of a binder consisting of 100 % slag is not recommended without the use of an activator.
Keywords: slag, binder for cement systems, chemical and phase composition, activity index
For citation: Kalinovskaya N., Al-Musavi K., Kuznetsov D. O vozmozhnosti primeneniya molotogo domennogo granulirovannogo shlaka PAO “Severstal” v tsementnykh sisitemakh [About the possibility of application of grind blast furnace granulated slag PJSC “Severstal” in cement systems]. In: Contemporary Issues of Concrete and Reinforced Concrete: Collected Research Papers. Minsk. Institute BelNIIS. Vol. 12. 2020. pp. 120-130. https://doi.org/10.35579/2076-6033-2020-12-08 (in Russian)
Full text in Russian:
References:
- Khaidarov B. B., Mazov I. N., Kuznetsov D. V., Suvorov D. S. Razrabotka energoeffektivnoy tekhnologii pererabotki metallurgicheskikh shlakov [Development of energy efficient technology for processing metallurgical slags]. In: Actual scientific, technical and environmental problems of preserving the environment: Scientific Articles of International Scientific-Practical Conf., Brest 6-8 Apr. 2016. Part II. 348 p. (rus)
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- EN 15167-1:2006 Ground granulated blast furnace slag for use in concrete, mortar and grout. Part 1. Definitions, specifications and conformity criteria.
- EN 196-1:1994 Methods of testing cement - Part 1: Determination of strength
- DIN EN 197-1:2011 Cement - Part 1: Composition, specifications and conformity criteria for common cements.
ISSN 2664-567X (Online)
ISSN 2076-6033 (Print)
ISSN 2076-6033 (Print)