A Study of the Effects of Injected Chemical Soil Stabilizers on Expansive Clays and Claystones |
| |
Status | |
| |
Sequential Number | R92 |
| |
Matching Research Agency | Hayward Baker Incorporated |
| |
Principal Investigator | Thomas M. Petry
Professor of Civil Engineering
University of Missouri-Rolla
1870 Miner Circle
Rolla, Missouri 65409-0030 | | p | 573-341-4472 | | f | 573-341-4729 | | petryt@mst.edu |
|
| |
Student Involvement | Two students on partial support, 1/2 FTE total |
| |
Project Objective | To determine the rate and extent of how injected clay soil chemical stabilization agents improve selected properties of expansive clay soils and claystones. Further study ways to improve the measurement of soil suction in treated clays and improve determination of beneficial reduction in shrinkage as a result of treatment. |
| |
Project Abstract | | 1. | Select and sample subject clay soil(s) and claystone(s) for improvement. | | 2. | Determine the basic physical and chemical properties of both the subject soil(s) and claystone(s). | | 3. | Treat the subject materials with chemical agents, using simulated injections. | | 4. | Determine the changes to physical and chemical properties of the subject materials after treatment. | | 5. | Continue research into the use of a new device for measurement of clay soil suction as applied to determine improvements to behavior caused by treatments. | | 6. | Investigate ways to effectively monitor the improvements of clay soil shrinkage that occur as a result of chemical treatments. | | 7. | Provide final project report to Hayward Baker. |
|
| |
Anticipated Benefits | Better understanding of how injected chemical agents can improve the behavior of expansive clay soils and claystones. This will potentially reduce the cost of construction of all types of transportation structures and reduce the damage potential of these problematic soils. |
| |
Modal Orientation | All transportation facilities |
| |
Milestones | | Project Start Date: | 09/01/2002 | | Project End Date: | 08/31/2003 |
|
| |
Relationship to other Research/Projects | Related to other chemical stabilization projects. |
| |
Technology Transfer Activities | Final report and publications through TRB |
| |
Transportation Research Board Keywords | Expansive soils, clays, chemical stabilization |
