| Download | - View final version: Improved determination of preconsolidation pressure of a sensitive clay (PDF, 960 KiB)
|
|---|
| Author | Search for: Hamilton, J. J.; Search for: Crawford, C. B.1 |
|---|
| Affiliation | - National Research Council of Canada
|
|---|
| Format | Text, Article |
|---|
| Subject | sensitive clay; preconsolidation; soil consolidation; loads |
|---|
| Abstract | Poor agreement between calculated and measured consolidation settlement in the Leda (Laurentian) clay of eastern Canada suggested that either the classical consolidation theory might not apply to this soil or that present testing techniques were not yielding the correct consolidation characteristics of the soil. An underestimation of the preconsolidation load was found to result from tests using normal procedures. An investigation of various techniques to improve the determination of the preconsolidation pressure are outlined in this paper. Increment loading tests with various increment sizes and increment durations were investigated as well as continuous loading tests under various controlled rates of stress application and various controlled rates of strain. It was found that small increment tests best defined the pressure-void-ratio curve, but required much time. A method of determining the point of 100 per cent primary consolidation on the log time- deflection plot of small increment tests was developed. Constant rate of strain tests show promise as possible rapid testing techniques. |
|---|
| Publication date | 1960-12-01 |
|---|
| Publisher | American Society for Testing Materials |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| Identifier | DBR-RP-115 |
|---|
| NRC number | NRCC 5528
NRC-IRC-253 |
|---|
| NPARC number | 20374055 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | c9422f13-5ab8-47aa-a8d5-3da3ffaa1baa |
|---|
| Record created | 2012-07-23 |
|---|
| Record modified | 2023-12-22 |
|---|
