Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing
This article presents an investigation into the potential use of ground granulated blast-furnace slag (addressed as Slag cement or ‘SC’) as a replacement to Ordinary Portland Cement (OPC) in hybrid (carbonation and hydration) cured cement-based materials. To investigate the effects of carbonation on...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Cement |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666549223000348 |
| _version_ | 1797384994161688576 |
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| author | Rakibul I. Khan Muhammad Intesarul Haque Adhora Tahsin Warda Ashraf |
| author_facet | Rakibul I. Khan Muhammad Intesarul Haque Adhora Tahsin Warda Ashraf |
| author_sort | Rakibul I. Khan |
| collection | DOAJ |
| description | This article presents an investigation into the potential use of ground granulated blast-furnace slag (addressed as Slag cement or ‘SC’) as a replacement to Ordinary Portland Cement (OPC) in hybrid (carbonation and hydration) cured cement-based materials. To investigate the effects of carbonation on mechanical performances and microstructures, 0 %–100 % OPC was replaced with slag cement (SC). Thermogravimetric analysis (TGA) and Fourier transformed infrared (FTIR) spectra were utilized to investigate the carbonation reaction extent, rate, and microstructural phase formations. Slag cement was found to improve the efficiency and rate of carbonation. This study revealed that a minimum of 72 h of carbonation in a CO2-containing environment yields better mechanical performance compared to the traditional curing method. Specifically, the incorporation of 72 h of carbonation curing was observed to increase the strength of concrete up to 30 % after 28 days of total curing duration (carbonation and hydration). The chloride permeability of the carbonation cured samples was observed to reduce by 80 % due to the addition of SC. Finally, it was observed that, the carbonated concrete sample with slag has nearly 60 % lower global warming potential compared to the carbonated and non-carbonated concrete sample with 100 % OPC binder. |
| first_indexed | 2024-03-08T21:47:42Z |
| format | Article |
| id | doaj.art-02648cf77fff4afd8b8a3b3d32d623db |
| institution | Directory Open Access Journal |
| issn | 2666-5492 |
| language | English |
| last_indexed | 2024-03-08T21:47:42Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cement |
| spelling | doaj.art-02648cf77fff4afd8b8a3b3d32d623db2023-12-20T07:38:47ZengElsevierCement2666-54922023-12-0114100088Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curingRakibul I. Khan0Muhammad Intesarul Haque1Adhora Tahsin2Warda Ashraf3Department of Civil Engineering, University of Texas at Arlington, TX, 76010, USA; Laticrete International Inc, Bethany, CT, 06524-3423, USADepartment of Civil Engineering, University of Texas at Arlington, TX, 76010, USADepartment of Civil Engineering, University of Texas at Arlington, TX, 76010, USADepartment of Civil Engineering, University of Texas at Arlington, TX, 76010, USA; Corresponding author.This article presents an investigation into the potential use of ground granulated blast-furnace slag (addressed as Slag cement or ‘SC’) as a replacement to Ordinary Portland Cement (OPC) in hybrid (carbonation and hydration) cured cement-based materials. To investigate the effects of carbonation on mechanical performances and microstructures, 0 %–100 % OPC was replaced with slag cement (SC). Thermogravimetric analysis (TGA) and Fourier transformed infrared (FTIR) spectra were utilized to investigate the carbonation reaction extent, rate, and microstructural phase formations. Slag cement was found to improve the efficiency and rate of carbonation. This study revealed that a minimum of 72 h of carbonation in a CO2-containing environment yields better mechanical performance compared to the traditional curing method. Specifically, the incorporation of 72 h of carbonation curing was observed to increase the strength of concrete up to 30 % after 28 days of total curing duration (carbonation and hydration). The chloride permeability of the carbonation cured samples was observed to reduce by 80 % due to the addition of SC. Finally, it was observed that, the carbonated concrete sample with slag has nearly 60 % lower global warming potential compared to the carbonated and non-carbonated concrete sample with 100 % OPC binder.http://www.sciencedirect.com/science/article/pii/S2666549223000348Carbonation curingPortland cementSlag cementMicrostructureLife cycle analysis |
| spellingShingle | Rakibul I. Khan Muhammad Intesarul Haque Adhora Tahsin Warda Ashraf Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing Cement Carbonation curing Portland cement Slag cement Microstructure Life cycle analysis |
| title | Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing |
| title_full | Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing |
| title_fullStr | Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing |
| title_full_unstemmed | Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing |
| title_short | Multiscale performance and environmental impact assessment of slag and Portland blended cement for optimum carbonation curing |
| title_sort | multiscale performance and environmental impact assessment of slag and portland blended cement for optimum carbonation curing |
| topic | Carbonation curing Portland cement Slag cement Microstructure Life cycle analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2666549223000348 |
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