Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash
This study investigated the use of superabsorbent polymers (SAPs) as an internal curing and crack-healing material in self-compacting concrete (SCC) made with high-volume ground bottom ash (GBA). With a total binder content of 600 kg/m3 and a water-to-binder (w/b) ratio of 0.27, ordinary Portland ce...
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524013482 |
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| author | Siwakorn Chitthawornmanee Harsimranpreet Kaur Trinh Nhat Ho Tran Pattharaphon Chindasiriphan Pitcha Jongvivatsakul Weerachart Tangchirapat |
| author_facet | Siwakorn Chitthawornmanee Harsimranpreet Kaur Trinh Nhat Ho Tran Pattharaphon Chindasiriphan Pitcha Jongvivatsakul Weerachart Tangchirapat |
| author_sort | Siwakorn Chitthawornmanee |
| collection | DOAJ |
| description | This study investigated the use of superabsorbent polymers (SAPs) as an internal curing and crack-healing material in self-compacting concrete (SCC) made with high-volume ground bottom ash (GBA). With a total binder content of 600 kg/m3 and a water-to-binder (w/b) ratio of 0.27, ordinary Portland cement (OPC) was replaced with pozzolanic materials by up to 70 % by weight of the binder. The pozzolanic blend comprised high-volume GBA, original fly ash (FA), and nano-silica (NS) in three weight ratios: 70:0:0, 60:10:0, and 58:10:2 (GBA:FA:NS). Additionally, pre-absorption with SAP and a saturated calcium hydroxide (Ca(OH)₂) solution was employed, and the crack-healing ability of SCC with SAP was observed. The results demonstrated that SAP significantly controlled the slump flow and T50 while reducing the required dosage of superplasticizer. However, an increase in SAP content led to a decrease in compressive strength. Reduced water flow rate through the cracked concrete was observed for the first two weeks in SCC mixes containing 0.6–1.8 % of SAP by weight of the binder, decreasing by over 90 % after curing for 28 days. In SCC mixes incorporating SAP saturated with Ca(OH)2, a 98 % reduction in water flow rate was achieved, in addition to a slight increase in compressive strength, due to the additional formation of calcium-silicate-hydrate (CSH) gels and calcium carbonate (CaCO3) precipitation. Furthermore, the inclusion of SAP or SAP saturated with Ca(OH)2 significantly reduced chloride penetration in SCC. Microstructure analysis revealed the presence of crack-healing products including CSH gels and CaCO3 precipitation. |
| format | Article |
| id | doaj-art-ef9d49dc4783441697476202396ad73b |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-ef9d49dc4783441697476202396ad73b2025-01-06T04:08:40ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04196Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ashSiwakorn Chitthawornmanee0Harsimranpreet Kaur1Trinh Nhat Ho Tran2Pattharaphon Chindasiriphan3Pitcha Jongvivatsakul4Weerachart Tangchirapat5Construction Innovations and Future Infrastructures Research Center (CIFIR), Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, Bangkok, ThailandConstruction Innovations and Future Infrastructures Research Center (CIFIR), Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, Bangkok, ThailandConstruction Innovations and Future Infrastructures Research Center (CIFIR), Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, Bangkok, ThailandDepartment of Civil and Environmental Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom, ThailandCenter of Excellence in Innovative Construction Materials, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand; GreenTech Nexus: Research Center for Sustainable Construction Innovation, Faculty of Engineering, Chulalongkorn University, Bangkok, ThailandConstruction Innovations and Future Infrastructures Research Center (CIFIR), Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, Bangkok, Thailand; Corresponding author.This study investigated the use of superabsorbent polymers (SAPs) as an internal curing and crack-healing material in self-compacting concrete (SCC) made with high-volume ground bottom ash (GBA). With a total binder content of 600 kg/m3 and a water-to-binder (w/b) ratio of 0.27, ordinary Portland cement (OPC) was replaced with pozzolanic materials by up to 70 % by weight of the binder. The pozzolanic blend comprised high-volume GBA, original fly ash (FA), and nano-silica (NS) in three weight ratios: 70:0:0, 60:10:0, and 58:10:2 (GBA:FA:NS). Additionally, pre-absorption with SAP and a saturated calcium hydroxide (Ca(OH)₂) solution was employed, and the crack-healing ability of SCC with SAP was observed. The results demonstrated that SAP significantly controlled the slump flow and T50 while reducing the required dosage of superplasticizer. However, an increase in SAP content led to a decrease in compressive strength. Reduced water flow rate through the cracked concrete was observed for the first two weeks in SCC mixes containing 0.6–1.8 % of SAP by weight of the binder, decreasing by over 90 % after curing for 28 days. In SCC mixes incorporating SAP saturated with Ca(OH)2, a 98 % reduction in water flow rate was achieved, in addition to a slight increase in compressive strength, due to the additional formation of calcium-silicate-hydrate (CSH) gels and calcium carbonate (CaCO3) precipitation. Furthermore, the inclusion of SAP or SAP saturated with Ca(OH)2 significantly reduced chloride penetration in SCC. Microstructure analysis revealed the presence of crack-healing products including CSH gels and CaCO3 precipitation.http://www.sciencedirect.com/science/article/pii/S2214509524013482High-volume bottom ashSelf-compacting concreteCrack-healingSuperabsorbent polymer |
| spellingShingle | Siwakorn Chitthawornmanee Harsimranpreet Kaur Trinh Nhat Ho Tran Pattharaphon Chindasiriphan Pitcha Jongvivatsakul Weerachart Tangchirapat Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash Case Studies in Construction Materials High-volume bottom ash Self-compacting concrete Crack-healing Superabsorbent polymer |
| title | Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash |
| title_full | Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash |
| title_fullStr | Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash |
| title_full_unstemmed | Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash |
| title_short | Influences of superabsorbent polymer (SAP) on the compressive strength and crack-healing ability of self-compacting concrete containing high-volume ground bottom ash |
| title_sort | influences of superabsorbent polymer sap on the compressive strength and crack healing ability of self compacting concrete containing high volume ground bottom ash |
| topic | High-volume bottom ash Self-compacting concrete Crack-healing Superabsorbent polymer |
| url | http://www.sciencedirect.com/science/article/pii/S2214509524013482 |
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