Developing Specifications for Shale Breakdown
In many parts of Kansas, sufficient quantities of soil are not available for compaction, and excavated shale is used for filling. This shale often contains lumps of substantial size, which can lead to problems with achieving an acceptable level of compaction. Furthermore, shale lumps from many formations will break down over time. The resulting fills can experience substantial settlement and may develop weak planes that can result in slope failures. A better specification for shale breakdown is needed, however the degree of shale breakdown required to reduce these problems to an acceptable level is not understood with a sufficient degree of accuracy. Research is needed to more accurately identify the degree of shale breakdown required to achieve the desired performance with regard to compaction, degradation rate (slaking), settlement and soil strength, and the influence of factors such as the fines content and plasticity index, and the influence of naturally cemented shales vs shales resulting from natural compaction only. It will then be possible to develop a specification based on the results of that research.
Language
- English
Project
- Status: Active
- Funding: $79,881.00
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Contract Numbers:
K-TRAN: KU-25-3
RE-0900-01
C2243
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Sponsor Organizations:
Kansas Department of Transportation
Eisenhower State Office Building
700 SW Harrison Street
Topeka, KS United States 66603-3754 -
Performing Organizations:
University of Kansas Center for Research, Incorporated
2291 Irving Hill Drive, Campus West
Lawrence, KS United States 66045 -
Principal Investigators:
Parsons, Robert
Han, Jie
- Start Date: 20240701
- Expected Completion Date: 20260630
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Compaction; Crushing; Fillers (Materials); Shale
- Geographic Terms: Kansas
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 01942499
- Record Type: Research project
- Source Agency: Kansas Department of Transportation
- Contract Numbers: K-TRAN: KU-25-3, RE-0900-01, C2243
- Files: RIP, STATEDOT
- Created Date: Jan 13 2025 3:12PM