Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-compacting architectural concrete production using red mud
https://orcid.org/0000-0002-1667-7812
https://orcid.org/0000-0001-6766-2736
Graphical abstract Display Omitted
Highlights Effective use of RM, also known as bauxite residue, in coloured concrete production. Fresh and hardened properties of SCC made with white cement are appraised. Several mixes containing RM as partial cement and filler replacement are investigated. Mixes made with low RM content had similar properties to the control concrete.
Abstract Red mud (RM) is a toxic waste, rich in coloured pigments, which affects landfills and surrounding environments due to its high alkalinity. But it is suitable for architectural coloured concrete production since it contains a high volume of ferric oxide (Fe2O3), aluminium oxide (Al2O3), and Silicon dioxide (SiO2). Therefore, the application of RM in concrete production not only may benefit the construction industry but also helps mitigating the environmental effects of alumina refineries. In addition, using RM can help to achieve a green coloured concrete with similar properties to current concrete made with white cement. This study intends to appraise the effects of RM in self-compacting architectural concrete (SCAC) production as cement and filler replacement. For that purpose, seven concrete mixes incorporating various ratios of RM as partial cement (2.5%, 5.0%, and 7.5%) and filler (25%, 50%, and 75%) replacement were produced in the laboratory. The results revealed that RM does not significantly affect the performance of concrete, as the variations of the results were mostly lower than 5% in relation to the reference concrete. Moreover, incorporating RM in SCAC can improve the durability to sulphate attack in terms of weight loss, a very important parameter when evaluating the performance of architectural concrete, by about 27%. In addition, using RM can help achieve a green coloured concrete with similar properties to current concrete made with white cement.
Self-compacting architectural concrete production using red mud
https://orcid.org/0000-0002-1667-7812
https://orcid.org/0000-0001-6766-2736
Graphical abstract Display Omitted
Highlights Effective use of RM, also known as bauxite residue, in coloured concrete production. Fresh and hardened properties of SCC made with white cement are appraised. Several mixes containing RM as partial cement and filler replacement are investigated. Mixes made with low RM content had similar properties to the control concrete.
Abstract Red mud (RM) is a toxic waste, rich in coloured pigments, which affects landfills and surrounding environments due to its high alkalinity. But it is suitable for architectural coloured concrete production since it contains a high volume of ferric oxide (Fe2O3), aluminium oxide (Al2O3), and Silicon dioxide (SiO2). Therefore, the application of RM in concrete production not only may benefit the construction industry but also helps mitigating the environmental effects of alumina refineries. In addition, using RM can help to achieve a green coloured concrete with similar properties to current concrete made with white cement. This study intends to appraise the effects of RM in self-compacting architectural concrete (SCAC) production as cement and filler replacement. For that purpose, seven concrete mixes incorporating various ratios of RM as partial cement (2.5%, 5.0%, and 7.5%) and filler (25%, 50%, and 75%) replacement were produced in the laboratory. The results revealed that RM does not significantly affect the performance of concrete, as the variations of the results were mostly lower than 5% in relation to the reference concrete. Moreover, incorporating RM in SCAC can improve the durability to sulphate attack in terms of weight loss, a very important parameter when evaluating the performance of architectural concrete, by about 27%. In addition, using RM can help achieve a green coloured concrete with similar properties to current concrete made with white cement.
Self-compacting architectural concrete production using red mud
https://orcid.org/0000-0002-1667-7812
https://orcid.org/0000-0001-6766-2736
Graphical abstract Display Omitted
Highlights Effective use of RM, also known as bauxite residue, in coloured concrete production. Fresh and hardened properties of SCC made with white cement are appraised. Several mixes containing RM as partial cement and filler replacement are investigated. Mixes made with low RM content had similar properties to the control concrete.
Abstract Red mud (RM) is a toxic waste, rich in coloured pigments, which affects landfills and surrounding environments due to its high alkalinity. But it is suitable for architectural coloured concrete production since it contains a high volume of ferric oxide (Fe2O3), aluminium oxide (Al2O3), and Silicon dioxide (SiO2). Therefore, the application of RM in concrete production not only may benefit the construction industry but also helps mitigating the environmental effects of alumina refineries. In addition, using RM can help to achieve a green coloured concrete with similar properties to current concrete made with white cement. This study intends to appraise the effects of RM in self-compacting architectural concrete (SCAC) production as cement and filler replacement. For that purpose, seven concrete mixes incorporating various ratios of RM as partial cement (2.5%, 5.0%, and 7.5%) and filler (25%, 50%, and 75%) replacement were produced in the laboratory. The results revealed that RM does not significantly affect the performance of concrete, as the variations of the results were mostly lower than 5% in relation to the reference concrete. Moreover, incorporating RM in SCAC can improve the durability to sulphate attack in terms of weight loss, a very important parameter when evaluating the performance of architectural concrete, by about 27%. In addition, using RM can help achieve a green coloured concrete with similar properties to current concrete made with white cement.
Self-compacting architectural concrete production using red mud
Ghalehnovi, Mansour (Autor:in) / Asadi Shamsabadi, Elyas (Autor:in) / Khodabakhshian, Ali (Autor:in) / Sourmeh, Farbod (Autor:in) / de Brito, Jorge (Autor:in)
Construction and Building Materials ; 226 ; 418-427
20.07.2019
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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