Utilizing expansive soil treated with phosphogypsum and lime in pavement construction
This study investigated the use of phosphogypsum (PG) in the long term as a construction material, especially in pavement structures. This study aimed to investigate the effect of increasing PG percentages on the geotechnical parameters of Expansive Soil. Extensive laboratory tests were conducted on...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023003833 |
| _version_ | 1797682485445787648 |
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| author | Dima A. Malkawi Samer R. Rabab'ah Malak M. AlSyouf Hussein Aldeeky |
| author_facet | Dima A. Malkawi Samer R. Rabab'ah Malak M. AlSyouf Hussein Aldeeky |
| author_sort | Dima A. Malkawi |
| collection | DOAJ |
| description | This study investigated the use of phosphogypsum (PG) in the long term as a construction material, especially in pavement structures. This study aimed to investigate the effect of increasing PG percentages on the geotechnical parameters of Expansive Soil. Extensive laboratory tests were conducted on both natural and PG-stabilized soil mixtures to examine their compaction properties, consistency limitations, swelling and linear shrinkage, pH values, and unconfined compressive strength (UCS), California bearing ratio (CBR), scanning electron microscopy (SEM), and X-ray Diffraction (XRD). The results showed that the PG addition would significantly reduce soil plasticity, linear shrinkage, and swell potential. Despite these improvements, the study concluded that treating the soil using PG only did not affect its physical properties sufficiently to be considered as a pavement subbase. As an alternative, lime was supplemented to the soil-PG mixture and noticed that a blend of 30% PG and 4% lime significantly improved soil strength, thereby rendering it appropriate for utilization as a pavement subbase layer. The Mechanistic-Empirical Pavement Design Guide (MEPDG) was utilized to assess the performance of pavement sections formed with PG-treated and untreated soils. As a result, this study contributes to the development of an environmentally sustainable PG waste management system while also demonstrating its potential uses in roadway construction. |
| first_indexed | 2024-03-12T00:00:24Z |
| format | Article |
| id | doaj.art-c07285c815804fc8abd91cedaad98922 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-12T00:00:24Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-c07285c815804fc8abd91cedaad989222023-09-18T04:30:33ZengElsevierResults in Engineering2590-12302023-09-0119101256Utilizing expansive soil treated with phosphogypsum and lime in pavement constructionDima A. Malkawi0Samer R. Rabab'ah1Malak M. AlSyouf2Hussein Aldeeky3School of Natural Resources Engineering & Management, Department of Civil & Environmental Engineering German Jordanian University, Deutsch Jordanische Hochschule, JordanDept. of Civil Engineering, Jordan University of Science &Technology, P.O. Box 3030, Irbid, 22110, Jordan; Corresponding author.Dept. of Civil Engineering, Jordan University of Science &Technology, P.O. Box 3030, Irbid, 22110, JordanDepartment of Civil Engineering, Faculty of Engineering, The Hashemite University, Zarqa, JordanThis study investigated the use of phosphogypsum (PG) in the long term as a construction material, especially in pavement structures. This study aimed to investigate the effect of increasing PG percentages on the geotechnical parameters of Expansive Soil. Extensive laboratory tests were conducted on both natural and PG-stabilized soil mixtures to examine their compaction properties, consistency limitations, swelling and linear shrinkage, pH values, and unconfined compressive strength (UCS), California bearing ratio (CBR), scanning electron microscopy (SEM), and X-ray Diffraction (XRD). The results showed that the PG addition would significantly reduce soil plasticity, linear shrinkage, and swell potential. Despite these improvements, the study concluded that treating the soil using PG only did not affect its physical properties sufficiently to be considered as a pavement subbase. As an alternative, lime was supplemented to the soil-PG mixture and noticed that a blend of 30% PG and 4% lime significantly improved soil strength, thereby rendering it appropriate for utilization as a pavement subbase layer. The Mechanistic-Empirical Pavement Design Guide (MEPDG) was utilized to assess the performance of pavement sections formed with PG-treated and untreated soils. As a result, this study contributes to the development of an environmentally sustainable PG waste management system while also demonstrating its potential uses in roadway construction.http://www.sciencedirect.com/science/article/pii/S2590123023003833California bearing ratio (CBR)Expansive soilsMechanistic-empirical pavement design guide (MEPDG)Phosphogypsum (PG)Soil stabilizationSustainable construction materials |
| spellingShingle | Dima A. Malkawi Samer R. Rabab'ah Malak M. AlSyouf Hussein Aldeeky Utilizing expansive soil treated with phosphogypsum and lime in pavement construction Results in Engineering California bearing ratio (CBR) Expansive soils Mechanistic-empirical pavement design guide (MEPDG) Phosphogypsum (PG) Soil stabilization Sustainable construction materials |
| title | Utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| title_full | Utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| title_fullStr | Utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| title_full_unstemmed | Utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| title_short | Utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| title_sort | utilizing expansive soil treated with phosphogypsum and lime in pavement construction |
| topic | California bearing ratio (CBR) Expansive soils Mechanistic-empirical pavement design guide (MEPDG) Phosphogypsum (PG) Soil stabilization Sustainable construction materials |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023003833 |
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