Compression characteristics of saturated re-compacted glacial tills in Tianmo Gully of Tibet,China |
| |
| Authors: | CHEN Lei-lei ZHOU Gordon GD MU Qing-yi CUI Kahlil Fredrick E SONG Dong-ri |
| |
| Abstract: | Glacial tills are highly compressible soils composed of loosely cemented sandy silt particles. Their role, for instance, as initial filler materials in geo-technical projects along temperate glacier regions warrant a systematic evaluation of their compressive characteristics. As such, we carry out a series of onedimensional compression tests on re-compacted glacial till samples obtained from Tianmo Gully, Tibet, with the aims of evaluating their compressive behavior under controlled initial stress conditions. The yield stress was determined from the void ratio versus consolidation pressure(e-log) planes. Its compression and swelling behaviors were observed during the primary and secondary compressions of the consolidation tests. From the compression curves, a correlation can be found between the consolidation stress and the void index. In addition, we find that the compression curves of glacial tills collapse into a single curve when normalized by the compression index. The experimental results in this study provide a basic understanding of the compression characteristics of the glacial tills in Tibet, China. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
