A Study to Determine the Effects of Organics on the Results of Quicklime Slurries Treatment of Clay Soils |
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Sequential Number | R76 |
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Matching Research Agency | Chemical Lime Company |
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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 |
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Student Involvement | One student on partial support, 1/4 FTE total |
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Project Objective | To determine how various percentages of organic soil matter in clay soils can affect the process of improving selected engineering properties of these soils using quicklime slurries. |
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Project Abstract | | 1. | Select and sample subject clay soil(s) for improvement, and locate a source of suitable heavily organic soil(s). | | 2. | | Determine the basic physical properties of both the subject soil and organic soil: | | a. | % Volatile Organics | | b. | Index Properties | | c. | Chemical Properties | | d. | Inspection by SEM of Compacted Specimens |
| | 3. | Select mixtures of the natural soil and organic soil for testing: suggest 0, 5, 10, 15, 20 and 25 % organic soil as percent of whole sample mixture. | | 4. | Make the mixture of soils and sufficient water to bring to approximately the mixture's plastic limit and allow to equilibrate moisture. | | 5. | Determine the untreated properties of the soil mixtures. | | 6. | Conduct standard lime treatment testing regimen on the natural clay soil and the soil mixtures. | | 7. | Conduct 3-D swell potential tests and wet-dry tests on specimens at LMO and LSO percents lime for each soil mixture. | | 8. | Conduct SEM study of materials tested and taken from the compacted specimens of untreated and treated soil mixtures. | | 9. | Analyze results of testing and provide project report to funding company. |
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Anticipated Benefits | Better understanding of how lime can improve the behavior of expansive clay soils containing significant organics. This will potentially reduce the cost of construction of all types of transportation structures and redue the damage potential of these problematic soils. |
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Modal Orientation | All transportation facilities |
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Milestones | | Project Start Date: | 09/01/2002 | | Project End Date: | 08/31/2003 |
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Relationship to other Research/Projects | Related to other chemical stabilization projects |
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Technology Transfer Activities | Final report and publications through TRB |
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Transportation Research Board Keywords | Expansive soils, clays, chemical stabilization |
