Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag
The increasing production of waste glass fiber reinforced polymer (GFRP) is causing severe environmental pollution, highlighting the need for an effective treatment method. This study explores recycling waste GFRP powder to substitute ground granulated blast furnace slag (GGBS) in synthesizing geopo...
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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/S2214509525000038 |
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| author | Zhenying Xie Dan Yu Jun Wang |
| author_facet | Zhenying Xie Dan Yu Jun Wang |
| author_sort | Zhenying Xie |
| collection | DOAJ |
| description | The increasing production of waste glass fiber reinforced polymer (GFRP) is causing severe environmental pollution, highlighting the need for an effective treatment method. This study explores recycling waste GFRP powder to substitute ground granulated blast furnace slag (GGBS) in synthesizing geopolymers, aiming to rapidly stabilize clayey soil. The impact of GFRP powder replacement, alkali solution concentration, alkaline activator/precursor (A/P) ratio, and binder content on the geomechanical properties and permeability of stabilized soil was thoroughly examined. The findings revealed that replacing GFRP powder from 20 wt% to 40 wt% lowered the unconfined compressive strength (UCS). However, soil stabilized with 30 wt% GFRP powder displayed the highest shear strength. This indicates that the incorporation of an appropriate amount of GFRP powder elevates clay cohesion. Furthermore, an increase in GFRP powder replacement improved permeability coefficient in the early stages, with minimal impact observed after 28 days. Scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis revealed a microstructural evolution of the stabilized soil, transitioning from a porous to a denser, more homogeneous composition over the curing period, which can be attributed to the formation of cluster gels enveloping the soil particles. Life cycle assessment (LCA) analysis indicated that the GFRP powder/GGBS geopolymer presents an alternative option to traditional Ordinary Portland Cement (OPC) binder, featuring a global warming potential (GWP)/strength ratio reduction of 6 %-40 %. This research offers a practical solution for effectively utilizing GFRP waste in a sustainable manner, with minimal energy consumption and pollution, thereby contributing to the sustainable development of soil stabilization. |
| format | Article |
| id | doaj-art-82c5e46226d54797aba5b16320cb5f6c |
| 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-82c5e46226d54797aba5b16320cb5f6c2025-01-07T04:17:25ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04204Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slagZhenying Xie0Dan Yu1Jun Wang2College of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaThe fourth construction engineering company Ltd. of China construction second engineering bureau, Tianjin 300000, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, China; Corresponding author.The increasing production of waste glass fiber reinforced polymer (GFRP) is causing severe environmental pollution, highlighting the need for an effective treatment method. This study explores recycling waste GFRP powder to substitute ground granulated blast furnace slag (GGBS) in synthesizing geopolymers, aiming to rapidly stabilize clayey soil. The impact of GFRP powder replacement, alkali solution concentration, alkaline activator/precursor (A/P) ratio, and binder content on the geomechanical properties and permeability of stabilized soil was thoroughly examined. The findings revealed that replacing GFRP powder from 20 wt% to 40 wt% lowered the unconfined compressive strength (UCS). However, soil stabilized with 30 wt% GFRP powder displayed the highest shear strength. This indicates that the incorporation of an appropriate amount of GFRP powder elevates clay cohesion. Furthermore, an increase in GFRP powder replacement improved permeability coefficient in the early stages, with minimal impact observed after 28 days. Scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) analysis revealed a microstructural evolution of the stabilized soil, transitioning from a porous to a denser, more homogeneous composition over the curing period, which can be attributed to the formation of cluster gels enveloping the soil particles. Life cycle assessment (LCA) analysis indicated that the GFRP powder/GGBS geopolymer presents an alternative option to traditional Ordinary Portland Cement (OPC) binder, featuring a global warming potential (GWP)/strength ratio reduction of 6 %-40 %. This research offers a practical solution for effectively utilizing GFRP waste in a sustainable manner, with minimal energy consumption and pollution, thereby contributing to the sustainable development of soil stabilization.http://www.sciencedirect.com/science/article/pii/S2214509525000038Waste glass fiber reinforced polymerAlkaline activationSlagSoil stabilizationLife cycle assessment |
| spellingShingle | Zhenying Xie Dan Yu Jun Wang Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag Case Studies in Construction Materials Waste glass fiber reinforced polymer Alkaline activation Slag Soil stabilization Life cycle assessment |
| title | Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag |
| title_full | Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag |
| title_fullStr | Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag |
| title_full_unstemmed | Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag |
| title_short | Engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali-activated GFRP waste powder and slag |
| title_sort | engineering properties and life cycle assessment of a rapidly clayey soil stabilizer utilizing alkali activated gfrp waste powder and slag |
| topic | Waste glass fiber reinforced polymer Alkaline activation Slag Soil stabilization Life cycle assessment |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525000038 |
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