Ojuri, OO and Oluwatuyi, Opeyemi E. (2017) Strength and Hydraulic Conductivity Characteristics of Sand-Bentonite Mixtures Designed as a Landfill Liner. Jordan Journal of Civil Engineering, 11 (4). pp. 614-622.
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Strength and Hydraulic Conductivity Characteristics of Sand-Bentonite Mixtures Designed As a Landfill Liner.pdf Download (221kB) |
Abstract
Compacted sandy soils with addition of bentonite have been used in a variety of geotechnical structures as engineered barriers, such as in landfill liners and hydraulic containment structures. In this study, Igbokoda sand was mixed with bentonite at varying percentages of 0%, 2%, 4%, 6%, 8% and 10% by weight of sand. Strength tests, which include compaction test, California Bearing Ratio (CBR) test and direct shear test, were performed on various sand-bentonite mixtures using standard methods. Hydraulic conductivity tests were also performed on various sand-bentonite mixtures in order to determine their suitability as landfill liner. Results from the tests showed that 8% of bentonite with sand mixture had a hydraulic conductivity below 1×10-7 cm/s, a cohesion value of 250 kN/m3 and a reasonable strength (CBR) value of 54.07% using the West Africa standard compactive method, hence being the safest of the selected varying percentages for the design of a landfill liner.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | Opeyemi Oluwatuyi |
| Date Deposited: | 30 Nov 2018 17:46 |
| Last Modified: | 30 Nov 2018 17:46 |
| URI: | https://eprints.lmu.edu.ng/id/eprint/1631 |
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