DEVELOPMENT OF DURABILITY TESTS FOR SHALES IN EMBANKMENTS AND SWAMP BACKFILLS
A total of 43 samples were collected from all exposed shale units in Ontario. Fresh road-cuts or quarry faces were sampled where possible; however, some samples represent whethered outcrops. The shale samples were subjected to some modified standard tests as well as newly-devised tests. The tests included the Freeze/Thaw Test, Franklin Slake Durability Test, Wet/Dry Deterioration Test, modified Rate of Slaking Test, Water Adsorption Test, Dielectric Heating Test, Abrasion Loss Test, and Dry Bulk Density determination. The results of the various tests were compared using statistical methods of regression and correlation to determine which tests gave the most comparable and reproducible results. Statistical methods were also used to arrive at classification limits in the various tests for the following shale types: (1) rock-like; (2) low loss; (3) intermediat loss; and (4) high loss. The Franklin Slake Durability Test and Wet/Dry Test were found to give similar results, and either is recommended for determination of slake durability where the shale is used for embankment or swamp fill purposes. In addition, the Freeze/Thaw is recommended for shales used within the frost zone. Other tests can be used as umpire tests as needed.
- This report gives the findings of the Ontario Joint Transportation and Communications Research Program, Project 1313.
Ontario Ministry of Transportation & Communic, CanResearch and Development Division, 1201 Wilson Avenue
Downsview, ONo M3M 1J8, Canada
- Hudec, P P
- Publication Date: 1978-4
- Features: Appendices; Figures; Tables;
- Pagination: 51 p.
- TRT Terms: Abrasion tests; Adsorption; Backfilling; Density; Deterioration; Durability; Embankments; Freeze thaw tests; Mathematical models; Shale
- Old TRIS Terms: Backfills
- Subject Areas: Geotechnology; Highways;
- Accession Number: 00178857
- Record Type: Publication
- Report/Paper Numbers: RR 216
- Files: TRIS
- Created Date: Jul 29 1978 12:00AM