Abstract
A new method to calculate the volumetric strain of collapsible loess considering microstructure instability is developed. In this method, loess is regarded as the compound of disturbed part and undisturbed part. The volumetric proportion of the both parts, which represents the state of microstructural damage and varies with the increase of effective load, can be calculated by the combination of an idealized microstructure model, the pore size distribution curve and the equilibrium criterion for microstructure. The method is verified by comparing the calculated results with the data of triaxial compression tests. In addition, some experiments show that compression curves of loess with different water contents are parallel with each other in the sections that represent progressive damage to microstructure. This phenomenon is successfully explained by the equilibrium criterion for microstructure.
| Original language | English |
|---|---|
| Pages (from-to) | 1023-1028 |
| Number of pages | 6 |
| Journal | Yantu Lixue/Rock and Soil Mechanics |
| Volume | 26 |
| Issue number | 7 |
| State | Published - Jul 2005 |
| Externally published | Yes |
Keywords
- Collapse
- Loess
- Microstructure
- Stability
ASJC Scopus subject areas
- Civil and Structural Engineering
- Geotechnical Engineering and Engineering Geology
- Soil Science