Concept of design, construction method and performance evaluation of small reservoirs with surface lining | |
| Author | Rungrote Chuthong |
| Call Number | AIT Thesis no.WM-03-10 |
| Subject(s) | Reservoirs--Linings Water quality |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of the Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | In the past, construction of reservoirs especially in the northeast of Thailand faced serious problems due to leakage of water or large infiltration through dispersive soil that has high permeability. To stop or reduce infiltration, various alternatives of reservoir lining were considered such as clay, plastic sheet, concrete and conventional asphalt concrete, etc. Research works indicate that use conventional asphalt concrete is more acceptable because it is impermeable and flexible material but found to subject to temperature susceptibility at water surface. This leads to micro - cracking at surface of the asphalt liner and finally leakage. The use of crumb rubber (reclaimed rubber) obtained from used rubber tire scrap as a mixing ingredient of conventional asphalt that can be eliminated some undesirable properties such as bleeding and micro - cracking. Furthermore, crumb rubber can be achieved at low cost. Results of initial study by School of Civil Engineering, AIT based on laboratory tests show that the optimal composition of rubberized asphalt for small reservoir lining contains a mixture of 15% of crumb rubber and 85% of asphalt. There are two types of asphalt concrete mixing such as hot mixes and cold mixes. Cold mixes is selected to use in small reservoir lining due to it is practically applied for small pavement works, no heating and compaction roller are required hence it is suitable for farmer villages in Thailand. The lining work can be done by villagers. In this study, two reservoirs were constructed in Muang District, Salmon - Nakorn Province, Thailand; one with rubberized asphalt lining and another without lining for comparison purpose. The parameters consider for comparison were infiltration, slope stability, surface cracking, groundwater flux and water quality. The data cue collected during construction such as field density of soil bedding compaction, maximum dry density and optimum moisture content of soil sample in laboratory, average permeability coefficient of soil sampler in laboratory. After completion of construction of the two reservoirs the measurements were made on daily water level, evaporation, rainfall and water quality. Also field observation of cracks or other form of damages on surface lining were done. It was found that reservoir with rubberized asphalt lining can stop infiltration and another reservoir without lining had high infiltration. Visual observation on surface of lining was not found bleeding and cracking. Measurement of water quality in the lined reservoir indicates that water quality in the lined reservoir can be safely used for agricultural purpose. |
| Year | 2004 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Tawatchai Tingsanchali ;Clemente, Roberto S. ; |
| Examination Committee(s) | Sak Kongsuwan; |
| Scholarship Donor(s) | Royal Thai Government (RTG); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |