Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test
Soil improvement is often done through mixing the granular soils with fine-grained materials to obtain densified soil matrix and eventually increase the bearing capacity of the soil. In this paper, sand was mixed with three different quantities of bentonite. Then, the hydromechanical behaviour of sa...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523001328 |
| _version_ | 1827920606129029120 |
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| author | Wael M. Albadri Israa J. Alhani Hussein A. Shaia Mohanad Muayad Sabri Sabri Sin Mei LIM Mohanad Sameer Jabbar Murtadha Saeed Mohammed |
| author_facet | Wael M. Albadri Israa J. Alhani Hussein A. Shaia Mohanad Muayad Sabri Sabri Sin Mei LIM Mohanad Sameer Jabbar Murtadha Saeed Mohammed |
| author_sort | Wael M. Albadri |
| collection | DOAJ |
| description | Soil improvement is often done through mixing the granular soils with fine-grained materials to obtain densified soil matrix and eventually increase the bearing capacity of the soil. In this paper, sand was mixed with three different quantities of bentonite. Then, the hydromechanical behaviour of sand-bentonite mixtures was evaluated at different matric suctions. Suction-controlled triaxial test and the pressure plate extractor were used to obtain the experimental data needed to derive the stress-strain curves and the Soil Water Characteristics Curve (SWCC), respectively. The results showed that the apparent cohesion that developed due to the existence of matric suction was increasing with the bentonite content increase. Residual suction value was increasing as the bentonite content increasing. It was concluded that the increase of water retention capacity has made the sand-bentonite samples responds very significantly with changing of matric suction. Therefore, addition of fine materials to granular soils would make the soil prone to wetting collapse upon reaching the saturation condition during the rainy seasons. |
| first_indexed | 2024-03-13T04:12:01Z |
| format | Article |
| id | doaj.art-e82c80034b964d6aaea0cb72edf7e3b1 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:12:01Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-e82c80034b964d6aaea0cb72edf7e3b12023-06-21T06:53:55ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e01953Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial testWael M. Albadri0Israa J. Alhani1Hussein A. Shaia2Mohanad Muayad Sabri Sabri3Sin Mei LIM4Mohanad Sameer Jabbar5Murtadha Saeed Mohammed6Department of Mechanical Power Technical Engineering, Al-Amara University College, Misan, IraqFaculty of Civil Engineering, Mazaya University College, Thi-Qar, Iraq; Corresponding author.College of Engineering, University of Thi-Qar, Thi-Qar, IraqPeter the Great St. Petersburg Polytechnic University, St.Petersburg, RussiaFaculty of Engineering, Department of Civil and Environmental Engineering, National University of Singapore, 21 Lower Kent Ridge Rd, 109077, SingaporeTechnical College of Engineering, Albayan University, Baghdad, IraqDepartment of Mechanical Power Technical Engineering, Al-Amara University College, Misan, IraqSoil improvement is often done through mixing the granular soils with fine-grained materials to obtain densified soil matrix and eventually increase the bearing capacity of the soil. In this paper, sand was mixed with three different quantities of bentonite. Then, the hydromechanical behaviour of sand-bentonite mixtures was evaluated at different matric suctions. Suction-controlled triaxial test and the pressure plate extractor were used to obtain the experimental data needed to derive the stress-strain curves and the Soil Water Characteristics Curve (SWCC), respectively. The results showed that the apparent cohesion that developed due to the existence of matric suction was increasing with the bentonite content increase. Residual suction value was increasing as the bentonite content increasing. It was concluded that the increase of water retention capacity has made the sand-bentonite samples responds very significantly with changing of matric suction. Therefore, addition of fine materials to granular soils would make the soil prone to wetting collapse upon reaching the saturation condition during the rainy seasons.http://www.sciencedirect.com/science/article/pii/S2214509523001328SWCCMatric suctionSand-bentoniteTriaxial testUnsaturated soil |
| spellingShingle | Wael M. Albadri Israa J. Alhani Hussein A. Shaia Mohanad Muayad Sabri Sabri Sin Mei LIM Mohanad Sameer Jabbar Murtadha Saeed Mohammed Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test Case Studies in Construction Materials SWCC Matric suction Sand-bentonite Triaxial test Unsaturated soil |
| title | Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test |
| title_full | Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test |
| title_fullStr | Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test |
| title_full_unstemmed | Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test |
| title_short | Investigating the hydro-mechanical behaviour of unsaturated sand-bentonite mixtures using suction-controlled triaxial test |
| title_sort | investigating the hydro mechanical behaviour of unsaturated sand bentonite mixtures using suction controlled triaxial test |
| topic | SWCC Matric suction Sand-bentonite Triaxial test Unsaturated soil |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523001328 |
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