Abstract
The swell or compression characteristics of compacted soils are typically studied in the laboratory by means of one-dimensional or triaxial tests. Because of the practical limitations on the size of the testing equipment, often the coarse (oversize) fraction of the soil is not included in the test specimens. In this study, the effect of oversize particles on the swell and collapse of unsaturated fills is examined analytically and by means of laboratory experiments. It is concluded that theoretical analysis coupled with laboratory tests on the fine fraction may provide reliable data only for soils with small gravel contents, probably not exceeding 15 to 25%. This is because the interference of the oversize particles with swell/compression of the fine fraction becomes significant as gravel content increases and cannot be quantified by means of tests on the fine fraction alone. Large-scale or field tests are necessary for obtaining reliable data for the heave/settlement analysis of soils containing significant amounts of gravel and cobble, especially in the case of wetting-induced compression.
| Original language | English (US) |
|---|---|
| Title of host publication | Geotechnical Special Publication |
| Publisher | ASCE |
| Pages | 107-121 |
| Number of pages | 15 |
| Edition | 56 |
| State | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the Conference of the Geotechnical Engineering Division of the ASCE in Conjunction with the ASCE Convention - San Diego, CA, USA Duration: Oct 22 1995 → Oct 26 1995 |
Other
| Other | Proceedings of the Conference of the Geotechnical Engineering Division of the ASCE in Conjunction with the ASCE Convention |
|---|---|
| City | San Diego, CA, USA |
| Period | 10/22/95 → 10/26/95 |
ASJC Scopus subject areas
- Soil Science
- Building and Construction
- Architecture