A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Processed Municipal Solid Waste Incineration Ashes as Sustainable Binder for Concrete Products
https://orcid.org/http://orcid.org/0000-0001-7967-1955
https://orcid.org/http://orcid.org/0000-0002-9588-8561
https://orcid.org/http://orcid.org/0000-0002-0851-6242
After proper pre-treatment procedures, Municipal Solid Waste Incineration (MSWI) bottom ashes show all needed characteristics to substitute part of the Portland clinker in concrete. The use of these ashes greatly contributes to the establishment of a circular economy. As a by-product of waste-to-energy plants, they are abundantly and locally available. Ashes currently available after proprietary pre-treatment procedures contain elemental aluminium that deters their usability as supplementary cementitious material. An efficient pre-treatment option that is low-cost and avoids secondary pollution was recently proposed to remove elemental aluminium from ashes. This method consists of slow grinding and sieving, resulting in aluminium and other metals remaining in the coarse fraction facilitating their removal. In this research, the use of pre-treated Processed Incineration Ashes (PIA) in concrete was investigated. A concrete mix with replacement of 20% of the Portland cement CEM I 52.5 R by PIA was optimised to show similar compressive strength at 28 days to the CEM I 52.5 N reference, and even at 90 days compressive strength was 20% higher than for the CEM I reference concrete. Furthermore, equivalent performance with the benchmark concrete was found for the tested durability properties (open porosity, carbonation). Also leaching tests were performed to assess the potential use of PIA in the construction industry. Results provide evidence of the good overall performance of the PIA concrete.
Processed Municipal Solid Waste Incineration Ashes as Sustainable Binder for Concrete Products
https://orcid.org/http://orcid.org/0000-0001-7967-1955
https://orcid.org/http://orcid.org/0000-0002-9588-8561
https://orcid.org/http://orcid.org/0000-0002-0851-6242
After proper pre-treatment procedures, Municipal Solid Waste Incineration (MSWI) bottom ashes show all needed characteristics to substitute part of the Portland clinker in concrete. The use of these ashes greatly contributes to the establishment of a circular economy. As a by-product of waste-to-energy plants, they are abundantly and locally available. Ashes currently available after proprietary pre-treatment procedures contain elemental aluminium that deters their usability as supplementary cementitious material. An efficient pre-treatment option that is low-cost and avoids secondary pollution was recently proposed to remove elemental aluminium from ashes. This method consists of slow grinding and sieving, resulting in aluminium and other metals remaining in the coarse fraction facilitating their removal. In this research, the use of pre-treated Processed Incineration Ashes (PIA) in concrete was investigated. A concrete mix with replacement of 20% of the Portland cement CEM I 52.5 R by PIA was optimised to show similar compressive strength at 28 days to the CEM I 52.5 N reference, and even at 90 days compressive strength was 20% higher than for the CEM I reference concrete. Furthermore, equivalent performance with the benchmark concrete was found for the tested durability properties (open porosity, carbonation). Also leaching tests were performed to assess the potential use of PIA in the construction industry. Results provide evidence of the good overall performance of the PIA concrete.
Processed Municipal Solid Waste Incineration Ashes as Sustainable Binder for Concrete Products
https://orcid.org/http://orcid.org/0000-0001-7967-1955
https://orcid.org/http://orcid.org/0000-0002-9588-8561
https://orcid.org/http://orcid.org/0000-0002-0851-6242
After proper pre-treatment procedures, Municipal Solid Waste Incineration (MSWI) bottom ashes show all needed characteristics to substitute part of the Portland clinker in concrete. The use of these ashes greatly contributes to the establishment of a circular economy. As a by-product of waste-to-energy plants, they are abundantly and locally available. Ashes currently available after proprietary pre-treatment procedures contain elemental aluminium that deters their usability as supplementary cementitious material. An efficient pre-treatment option that is low-cost and avoids secondary pollution was recently proposed to remove elemental aluminium from ashes. This method consists of slow grinding and sieving, resulting in aluminium and other metals remaining in the coarse fraction facilitating their removal. In this research, the use of pre-treated Processed Incineration Ashes (PIA) in concrete was investigated. A concrete mix with replacement of 20% of the Portland cement CEM I 52.5 R by PIA was optimised to show similar compressive strength at 28 days to the CEM I 52.5 N reference, and even at 90 days compressive strength was 20% higher than for the CEM I reference concrete. Furthermore, equivalent performance with the benchmark concrete was found for the tested durability properties (open porosity, carbonation). Also leaching tests were performed to assess the potential use of PIA in the construction industry. Results provide evidence of the good overall performance of the PIA concrete.
Processed Municipal Solid Waste Incineration Ashes as Sustainable Binder for Concrete Products
RILEM Bookseries
M.C.F. Cunha, Vítor (editor) / Rezazadeh, Mohammadali (editor) / Gowda, Chandan (editor) / Joseph, Aneeta Mary (author) / Alderete, Natalia (author) / Matthys, Stijn (author) / De Belie, Nele (author)
RILEM Spring Convention and Conference ; 2020 ; Guimarães, Portugal
Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020) ; Chapter: 10 ; 103-110
RILEM Bookseries ; 35
2021-07-14
8 pages
Article/Chapter (Book)
Electronic Resource
English
The Immobilization of Municipal Solid Waste Incineration Ashes in Hardened Concrete
| British Library Conference Proceedings | 1999
Unconfined Compressive Strength of Municipal Solid Waste Incineration Bottom Ashes
| Online Contents | 2018
Unconfined Compressive Strength of Municipal Solid Waste Incineration Bottom Ashes
| Online Contents | 2018