Undrained shear strength and microstructural characterization of treated soft soil with recycled materials
Waste materials are being produced in huge quantities globally, and the usual practice is to dump them into legal or illegal landfills. Recycled tiles (RT) are being used in soil stabilisation which is considered as sustainable solution to reduce the amount of waste and solve the geotechnical proble...
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Techno Press
2019
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| author | Al-Bared, Mohammed A. M. Harahap, Indra S. H. Marto, Aminaton Abad, Seyed Vahid Alavi Nezhad Khalil Ali, Montasir O. A. |
| author_facet | Al-Bared, Mohammed A. M. Harahap, Indra S. H. Marto, Aminaton Abad, Seyed Vahid Alavi Nezhad Khalil Ali, Montasir O. A. |
| author_sort | Al-Bared, Mohammed A. M. |
| collection | ePrints |
| description | Waste materials are being produced in huge quantities globally, and the usual practice is to dump them into legal or illegal landfills. Recycled tiles (RT) are being used in soil stabilisation which is considered as sustainable solution to reduce the amount of waste and solve the geotechnical problems. Although the stabilisation of soil using RT improved the soil properties, it could not achieve the standard values required for construction. Thus, this study uses 20% RT together with low cement content (2%) to stabilise soft soil. Series of consolidated undrained triaxial compression tests were conducted on untreated and RT-cement treated samples. Each test was performed at 7, 14, and 28 days curing period and 50, 100, and 200 kPa confining pressures. The results revealed an improvement in the undrained shear strength parameters (cohesion and internal frication angle) of treated specimens compared to the untreated ones. The cohesion and friction angle of the treated samples were increased with the increase in curing time and confining pressure. The peak deviator stress of treated samples increases with the increment of either the effective confining pressures or the curing period. Microstructural and chemical tests were performed on both untreated and RT-cement treated samples, which included field emission scanning electron microscopic (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and energy dispersive X-ray spectrometer (EDX). The results indicated the formation of cementation compounds such as calcium aluminium hydrate (C-A-H) within the treated samples. Consequently, the newly formed compounds were responsible for the improvement observed in the results of the triaxial tests. This research promotes the utilisation of RT to reduce the amount of cement used in soil stabilisation for cleaner planet and sustainable environment. |
| first_indexed | 2024-03-05T20:43:54Z |
| format | Article |
| id | utm.eprints-88111 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:43:54Z |
| publishDate | 2019 |
| publisher | Techno Press |
| record_format | dspace |
| spelling | utm.eprints-881112020-12-14T23:07:03Z http://eprints.utm.my/88111/ Undrained shear strength and microstructural characterization of treated soft soil with recycled materials Al-Bared, Mohammed A. M. Harahap, Indra S. H. Marto, Aminaton Abad, Seyed Vahid Alavi Nezhad Khalil Ali, Montasir O. A. TA Engineering (General). Civil engineering (General) Waste materials are being produced in huge quantities globally, and the usual practice is to dump them into legal or illegal landfills. Recycled tiles (RT) are being used in soil stabilisation which is considered as sustainable solution to reduce the amount of waste and solve the geotechnical problems. Although the stabilisation of soil using RT improved the soil properties, it could not achieve the standard values required for construction. Thus, this study uses 20% RT together with low cement content (2%) to stabilise soft soil. Series of consolidated undrained triaxial compression tests were conducted on untreated and RT-cement treated samples. Each test was performed at 7, 14, and 28 days curing period and 50, 100, and 200 kPa confining pressures. The results revealed an improvement in the undrained shear strength parameters (cohesion and internal frication angle) of treated specimens compared to the untreated ones. The cohesion and friction angle of the treated samples were increased with the increase in curing time and confining pressure. The peak deviator stress of treated samples increases with the increment of either the effective confining pressures or the curing period. Microstructural and chemical tests were performed on both untreated and RT-cement treated samples, which included field emission scanning electron microscopic (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and energy dispersive X-ray spectrometer (EDX). The results indicated the formation of cementation compounds such as calcium aluminium hydrate (C-A-H) within the treated samples. Consequently, the newly formed compounds were responsible for the improvement observed in the results of the triaxial tests. This research promotes the utilisation of RT to reduce the amount of cement used in soil stabilisation for cleaner planet and sustainable environment. Techno Press 2019-07-20 Article PeerReviewed Al-Bared, Mohammed A. M. and Harahap, Indra S. H. and Marto, Aminaton and Abad, Seyed Vahid Alavi Nezhad Khalil and Ali, Montasir O. A. (2019) Undrained shear strength and microstructural characterization of treated soft soil with recycled materials. Geomechanics and Engineering, 18 (4). pp. 427-437. ISSN 2005-307X http://dx.doi.org/10.12989/gae.2019.18.4.427 DOI:10.12989/gae.2019.18.4.427 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Al-Bared, Mohammed A. M. Harahap, Indra S. H. Marto, Aminaton Abad, Seyed Vahid Alavi Nezhad Khalil Ali, Montasir O. A. Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title | Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title_full | Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title_fullStr | Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title_full_unstemmed | Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title_short | Undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| title_sort | undrained shear strength and microstructural characterization of treated soft soil with recycled materials |
| topic | TA Engineering (General). Civil engineering (General) |
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