| Effect of Bentonite Content on Hydraulic Conductivity of Sand-Bentonite Mixtures Used in Landfill Liners as an Alternative to Clay Liner in Egypt |
| Paper ID : 1073-ICCAE (R2) |
| Authors: |
|
Amr Mohamed Barrima *1, Nabil Amer2, Ibrahim M. Mashhour3 1Construction and Building, Engineering ,Arab Academy for Science and Technology 2Professor of Construction and Building, Arab Academy for Science and Technology 3Construction and Building, Arab Academy for Science and Technology |
| Abstract: |
| Compacted clays are commonly utilized as landfill liners due to their impermeable properties, however, the availability of natural clay soil may be difficult or prohibitively expensive in some regions thanks to the expense of transportation, the local soil availability or regulation. As an alternative hydraulic barrier, a compacted mixture of sand with a low percentage of bentonite (6% to 14%) was used. The purpose of this research is to investigate the applicability of bentonite available in the Egyptian market for controlling the hydraulic conductivity of sand-bentonite mixtures to be used in landfill liners. The study was divided into two phases: first, laboratory tests were conducted to identify the optimum bentonite percentage and bentonite types, using local commercial bentonite products. Then, in two distinct landfill liners layers, full-scale measurements were obtained. The experimental program demonstrated that Bentonite produced and found in the Egyptian market may be utilized in landfill liners with an acceptable quality control procedure to prevent any outcome deviation. |
| Keywords: |
| Waste containment liner systems , Landfill , Sand Bentonite mixtures , Atterberg limits, Hydraulic conductivity |
| Status : Paper Accepted (Oral Presentation) |
