| EPSRC Reference: |
GR/L36451/01 |
| Title: |
SWELLING PRESSURE AND PORE WATER SUCTION IN COMPACTED BENTONITE AS USED IN ENGINEERED BARRIERS |
| Principal Investigator: |
Ridley, Dr A |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Civil & Environmental Engineering |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 1997 |
Ends: |
30 September 2000 |
Value (£): |
178,700
|
| EPSRC Research Topic Classifications: |
|
| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
|
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
Suction controlled oedometers, incorporating radial stress measurements, will be used to investigate the yield behaviour of compacted bentonite fill as used in the engineered barriers for the containment of leachate from waste disposal facilities. Samples will constitute a designated quantity of bentonite (high, medium or low), a suitable fine sand and water. Compaction curves will be used to identify appropriate starting conditions (density, water content and suction) for each mix. Soil fabric studies will be performed using a scanning electron microscope and carbowax impregnated thin sections of (1) the as-compacted samples and (2) after completing the stress path odometer tests. Mineralogy studies will also be performed on each chosen mix. These tests will help in interpreting the influence of the compaction fabric on the elastic-plastic behaviour of the material. The results of the oedometer tests will be represented on a three dimensional plot of net total stress (ie [O-v+20-h]/2), pore water suction and a volumetric parameter. The development of vertical stress, radial stress and pore water suction will also be analysed separately.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.imperial.ac.uk |