| Autor: |
Burkart Adamczyk, Katharina Schraut, Christian Adam, Dietmar Stephan, Birgit Meng, Sebastian Simon, Julia von Werder |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Cement and Concrete Research. 147:106518 |
| ISSN: |
0008-8846 |
| DOI: |
10.1016/j.cemconres.2021.106518 |
| Popis: |
Basic oxygen furnace slags (BOFS) are by-products of the steelmaking process. Several researchers have studied the production of Portland cement clinker and metallic iron from BOFS via a reductive treatment. In this study, we applied a carbothermal reduction of BOFS in a technical-scale electric arc furnace and characterised the clinker-like products. Those clinker-like non-metallic products (NMPs) had a chemical and mineralogical composition comparable to clinker for ordinary Portland cement (OPC) and contained large elongated alite crystals as major component. The pure NMPs reacted more slowly and achieved a lower degree of hydration compared with commercial OPC. If the reactivity of the products can be further increased by employing specific adaptations, it can be used as a full clinker substitute for OPC. Nevertheless, it is also an option to use the material without further modifications as a cement component or concrete addition, which contributes to the strength development in both cases. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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