Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete
| Autor: | Sanja Martinović, Milica Vlahović, N. Djordjevic, Tatjana Volkov-Husović, Gordana Broćeta, Aleksandar Savić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Slump flow
Materials science Self-Compacting Concrete Thermal power station 02 engineering and technology Fly ash Mixture design engineering.material lcsh:Chemical technology 7. Clean energy Durability Flexural strength Filler (materials) Materials Chemistry lcsh:TP1-1185 mixture design 020502 materials Metallurgy Metals and Alloys self-compacting concrete (scc) Sem analysis mechanical strength Condensed Matter Physics Permeability (earth sciences) fly ash 0205 materials engineering Self-compacting concrete (SCC) Air content Ceramics and Composites engineering durability Mechanical strength |
| Zdroj: | Science of Sintering Science of Sintering, Vol 52, Iss 3, Pp 307-327 (2020) |
| Popis: | This study analyzes the feasibility of valorizing industrial by-product, fly ash from a thermal power plant as a partial replacement of mineral filler-limestone for the production of self-compacting concrete (SCC). Three types of SCC mixtures with different portions of fly ash and the reference mixture with limestone were designed. The synthesized SCCs in the fresh state were examined for density, entrained air content, flowability (Slump flow, Slump flow time (t500), V-funnel time (tv)), passing ability (L-box), and segregation resistance, while hardened state testing included: density, compressive and flexural strength, static modulus of elasticity, water permeability, resistance against freezing in the presence of de-icing salt, and SEM analysis. Taking into account the obtained results it can be concluded that the addition of fly ash has a positive impact on the concrete properties and that the optimal content of fly ash is 20 % with respect to the total filler mass. |
| Databáze: | OpenAIRE |
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