Soil stabilisation using binary blend of hospital waste ash and cement for pavement application
Abstract Global waste has experienced substantial growth, posing risks to health and the environment, with small but significant portion emanating from medical activities. The management of hospital waste has become a significant global issue due to its detrimental effects on the environment. By add...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2025-08-01
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| Series: | Discover Civil Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s44290-025-00310-z |
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| Summary: | Abstract Global waste has experienced substantial growth, posing risks to health and the environment, with small but significant portion emanating from medical activities. The management of hospital waste has become a significant global issue due to its detrimental effects on the environment. By addressing the adverse impacts on the environment and public health, this study explores using hospital waste ash (HWA) and Ordinary Portland cement (OPC) for road infrastructure through soil stabilisation, aiming to enhance the properties of pavement subgrade. The HWA was varied from 0 to 15% with 5% increment while the cement was maintained at 5%. Laboratory tests, including Atterberg limit, compaction, unconfined compressive strength (UCS), and California bearing ratio (CBR), were conducted on the modified lateritic soil mixtures. Results indicated an increase in the values of optimum moisture content (OMC) and maximum dry density (MDD). The Atterberg limit shows the modified soil upgrading from A-2-7 to A-2-6 and A-2-4 according to the AASHTO soil classification. Furthermore, the values of UCS and CBR increased as the content of HWA and cement increased; indicating an improved soil performance for pavement applications. However, the combination of 10%HWA + 5%OPC exhibits superior strength characteristics, displaying a significant increase of 50.3%, 192.1% and 11.24% compared to the un-stabilized soil for UCS, CBR and MDD, respectively, indicating its potential as a suitable stabilizer for pavement application and generating value from waste and enhanced road infrastructure. |
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| ISSN: | 2948-1546 |