A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis
Foam concrete, as a common road fill material, has long been widely studied. This paper examined the compressive strength, water absorption rate, freeze-thaw resistance, Young's modulus, erosion resistance, and thermal conductivity of foam concrete with various densities and sludge contents. SE...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of CO2 Utilization |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221298202400341X |
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| author | Weihao Li Jiapeng Yang Ming Sun Fengxia Xu Yan Zhao Handuo Xia |
| author_facet | Weihao Li Jiapeng Yang Ming Sun Fengxia Xu Yan Zhao Handuo Xia |
| author_sort | Weihao Li |
| collection | DOAJ |
| description | Foam concrete, as a common road fill material, has long been widely studied. This paper examined the compressive strength, water absorption rate, freeze-thaw resistance, Young's modulus, erosion resistance, and thermal conductivity of foam concrete with various densities and sludge contents. SEM and XRD images were utilized to study the impact of different sludge levels on hydration products. Environmental impacts were analyzed using life cycle assessment, and the optimal mix ratios were determined using the TOPSIS method. Results showed that incorporating a small amount of sludge (10 %) does not significantly impact the performance of foam concrete and can even slightly enhance compressive strength at a density of 800 kg/m3. The addition of sludge altered the internal pore structure, reduced thermal conductivity, decreased freeze-thaw resistance and Young's modulus, but improved erosion resistance and promoted the formation of AFt and AFm. Foam concrete with a density of 800 kg/m3 and 10 % sludge content exhibited the best overall performance. Substituting sludge for cement in foam concrete production effectively reduces carbon emissions. |
| format | Article |
| id | doaj-art-6f0bb641cfc942bca6dc5893a966b62d |
| institution | Kabale University |
| issn | 2212-9839 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of CO2 Utilization |
| spelling | doaj-art-6f0bb641cfc942bca6dc5893a966b62d2025-01-13T04:18:51ZengElsevierJournal of CO2 Utilization2212-98392025-01-0191103006A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysisWeihao Li0Jiapeng Yang1Ming Sun2Fengxia Xu3Yan Zhao4Handuo Xia5School of Civil Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Traffic and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China; Corresponding author.Chemical Application Technology Research Center, School of Biological and Environmental Engineering, Tianjin Vocational Institute, Tianjin 300410, ChinaChina 22nd Metallurgical Group Co., Ltd., Tangshan 063000, ChinaChina 22nd Metallurgical Group Co., Ltd., Tangshan 063000, ChinaFoam concrete, as a common road fill material, has long been widely studied. This paper examined the compressive strength, water absorption rate, freeze-thaw resistance, Young's modulus, erosion resistance, and thermal conductivity of foam concrete with various densities and sludge contents. SEM and XRD images were utilized to study the impact of different sludge levels on hydration products. Environmental impacts were analyzed using life cycle assessment, and the optimal mix ratios were determined using the TOPSIS method. Results showed that incorporating a small amount of sludge (10 %) does not significantly impact the performance of foam concrete and can even slightly enhance compressive strength at a density of 800 kg/m3. The addition of sludge altered the internal pore structure, reduced thermal conductivity, decreased freeze-thaw resistance and Young's modulus, but improved erosion resistance and promoted the formation of AFt and AFm. Foam concrete with a density of 800 kg/m3 and 10 % sludge content exhibited the best overall performance. Substituting sludge for cement in foam concrete production effectively reduces carbon emissions.http://www.sciencedirect.com/science/article/pii/S221298202400341XFoam concreteRoad fill materialSludgeLife cycle assessmentCarbon emission |
| spellingShingle | Weihao Li Jiapeng Yang Ming Sun Fengxia Xu Yan Zhao Handuo Xia A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis Journal of CO2 Utilization Foam concrete Road fill material Sludge Life cycle assessment Carbon emission |
| title | A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis |
| title_full | A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis |
| title_fullStr | A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis |
| title_full_unstemmed | A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis |
| title_short | A sludge-modified foam concrete for road fill material: Performance evaluation and carbon footprint analysis |
| title_sort | sludge modified foam concrete for road fill material performance evaluation and carbon footprint analysis |
| topic | Foam concrete Road fill material Sludge Life cycle assessment Carbon emission |
| url | http://www.sciencedirect.com/science/article/pii/S221298202400341X |
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