| Author | Jaroonsit Chantrathada |
| Call Number | AIT Thesis no.GE-95-16 |
| Subject(s) | Geosynthetics
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-95-16 |
| Abstract | Geosynthetics commonly utilized in landfill applications are geotextiles in conjunction with geomembranes. Often when they are placed adjacent to each other in the side slope liner configuration, the dynamic frictional characteristics of the resulting interfaces can become a very important factor affecting the design, construction and operation of a landfill. An experimental investigation for the dynamic interface shear strength properties of a geosynthetic system, therefore, was conducted in this study by using the shaking table apparatus. A total of twenty nine tests were performed in different types of geosynthetics for at least two different normal loads in order to investigate the influence of these parameters on the dynamic interface strength. Geosynthetics used in this study consist of the high density polyethylene (HDPE) geomembrane, linear low density polyethylene (LLDPE) geomembrane and nonwoven needlepunched polyester geotextile. The thickness of 1.0, 1.5, 2.0, and 2.5 mm for HDPE geomembrane and 1.0 mm for LLDPE geomembrane together with 200 g/m2 (1.85 mm thickness) and 550 g/m2 (5.12 mm thickness) geotextiles were selected to be a testing materials in this study. The results of this study include dynamic friction angle between geomembrane and geotextile, table acceleration time histories, block acceleration time histories and relative displacement between table and block during shaking period. These results are in good agreement with the previous studies on HDPE geomembranes and nonwoven geotextiles. Base on the results, it was found that the shear stress that can be transmitted from geomembrane to geotextile was limited under dynamic loading. Beyond this stress, slip deformations along the interface have been occurred. Additionally, the LLDPE geomembrane seems to have a dynamic interface friction angle somewhat greater than the HDPE geomembrane. The result also implied that the geomembrane thickness has no influence in the dynamic angle of friction as well as the normal stress. The 550 g/m2 geotextile, eventually, has shown the lower of the dynamic friction angle than the 200 g/m2 geotextile when the type of geomembrane, thickness of geomembrane and the normal load were kept to be constant. |
| Year | 1995 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-95-16 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Ashford, Scott A.; |
| Examination Committee(s) | Prinya Nutalaya;Balasubramaniam, A. S.;Pennung Warnitchai; |
| Scholarship Donor(s) | Airports Authority of Thailand; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1995 |