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Sustainable Utilisation of Lead-Smelter Slag and Copper Slag Aggregate in One-Part Geopolymer for Enhanced High-Temperature Performance
https://orcid.org/http://orcid.org/0000-0002-4654-0403
The increasing amount of metallurgy waste in the landfill has reached an alarming rate, posing an environmental and economic threat. One potential solution is the incorporation of metallurgy waste in alkali-activated materials (AAMs), which is a sustainable alternative to traditional Portland cement-based materials. One-part mixing method together with ambient curing also offers a promising approach for the mass production of sustainable AAMs, contributing to decarbonise the construction industry. This study aims to develop and characterise sustainable AAMs incorporating metallurgy waste aggregate with enhanced thermo-mechanical properties. River sand is substituted by 100% either lead-smelter slag (LSS) aggregate or copper slag (CS) aggregate. The fly ash, ground granulated blast-furnace slag and electrolytic copper powder are used at a ratio of 3:6:1. Solid sodium metasilicate is used at 10% of the total precursor, meanwhile, the use of graphene oxide (0.1 wt.% of precursor) is adopted for all mixes. Thermal properties and strength of specimens are tested and compared. The pore structure of samples is characterised by SEM/EDS and X-ray micro-CT to understand the correlation between microstructure and thermo-mechanical behaviour. The outcome of this study is to demonstrate the sustainable utilisation of metallurgical waste in enhancing the performance of one-part geopolymer. This study also provides new insight into the microstructure of a one-part geopolymer incorporating metallurgical waste for high-temperature applications such as thermal energy storage (TES).
Sustainable Utilisation of Lead-Smelter Slag and Copper Slag Aggregate in One-Part Geopolymer for Enhanced High-Temperature Performance
https://orcid.org/http://orcid.org/0000-0002-4654-0403
The increasing amount of metallurgy waste in the landfill has reached an alarming rate, posing an environmental and economic threat. One potential solution is the incorporation of metallurgy waste in alkali-activated materials (AAMs), which is a sustainable alternative to traditional Portland cement-based materials. One-part mixing method together with ambient curing also offers a promising approach for the mass production of sustainable AAMs, contributing to decarbonise the construction industry. This study aims to develop and characterise sustainable AAMs incorporating metallurgy waste aggregate with enhanced thermo-mechanical properties. River sand is substituted by 100% either lead-smelter slag (LSS) aggregate or copper slag (CS) aggregate. The fly ash, ground granulated blast-furnace slag and electrolytic copper powder are used at a ratio of 3:6:1. Solid sodium metasilicate is used at 10% of the total precursor, meanwhile, the use of graphene oxide (0.1 wt.% of precursor) is adopted for all mixes. Thermal properties and strength of specimens are tested and compared. The pore structure of samples is characterised by SEM/EDS and X-ray micro-CT to understand the correlation between microstructure and thermo-mechanical behaviour. The outcome of this study is to demonstrate the sustainable utilisation of metallurgical waste in enhancing the performance of one-part geopolymer. This study also provides new insight into the microstructure of a one-part geopolymer incorporating metallurgical waste for high-temperature applications such as thermal energy storage (TES).
Sustainable Utilisation of Lead-Smelter Slag and Copper Slag Aggregate in One-Part Geopolymer for Enhanced High-Temperature Performance
https://orcid.org/http://orcid.org/0000-0002-4654-0403
The increasing amount of metallurgy waste in the landfill has reached an alarming rate, posing an environmental and economic threat. One potential solution is the incorporation of metallurgy waste in alkali-activated materials (AAMs), which is a sustainable alternative to traditional Portland cement-based materials. One-part mixing method together with ambient curing also offers a promising approach for the mass production of sustainable AAMs, contributing to decarbonise the construction industry. This study aims to develop and characterise sustainable AAMs incorporating metallurgy waste aggregate with enhanced thermo-mechanical properties. River sand is substituted by 100% either lead-smelter slag (LSS) aggregate or copper slag (CS) aggregate. The fly ash, ground granulated blast-furnace slag and electrolytic copper powder are used at a ratio of 3:6:1. Solid sodium metasilicate is used at 10% of the total precursor, meanwhile, the use of graphene oxide (0.1 wt.% of precursor) is adopted for all mixes. Thermal properties and strength of specimens are tested and compared. The pore structure of samples is characterised by SEM/EDS and X-ray micro-CT to understand the correlation between microstructure and thermo-mechanical behaviour. The outcome of this study is to demonstrate the sustainable utilisation of metallurgical waste in enhancing the performance of one-part geopolymer. This study also provides new insight into the microstructure of a one-part geopolymer incorporating metallurgical waste for high-temperature applications such as thermal energy storage (TES).
Sustainable Utilisation of Lead-Smelter Slag and Copper Slag Aggregate in One-Part Geopolymer for Enhanced High-Temperature Performance
Lecture Notes in Civil Engineering
Barros, Joaquim A. O. (editor) / Cunha, Vítor M. C. F. (editor) / Sousa, Hélder S. (editor) / Matos, José C. (editor) / Sena-Cruz, José M. (editor) / Tran, Nghia P. (author) / Nguyen, Tuan N. (author) / Ngo, Tuan D. (author)
FIB International Conference on Concrete Sustainability ; 2024 ; Guimarães, Portugal
4th fib International Conference on Concrete Sustainability (ICCS2024) ; Chapter: 35 ; 282-289
2025-01-09
8 pages
Article/Chapter (Book)
Electronic Resource
English
Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns
| Online Contents | 2017
Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns
| British Library Online Contents | 2017
Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns
| British Library Online Contents | 2017
Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns
| British Library Online Contents | 2017
Experimental study on fly ash and lead smelter slag-based geopolymer concrete columns
| British Library Online Contents | 2017