APPLICATION OF STRAIN MEASUREMENTS TO SOIL COMPACTION EVALUATION
THE PURPOSE OF THIS STUDY WAS TO INVESTIGATE THE USE OF SOIL STRAIN MEASUREMENTS FOR OBSERVING COMPACTION OF EARTH MATERIALS IN THE FIELD. THE SENSORS CONSISTED OF DISK-SHAPED COILS EMBEDDED IN THE MATERIAL; THE DISTANCE BETWEEN ADJACENT PAIRS WAS DETERMINED BY INDUCTANCE COUPLING. EXPERIMENTS WERE CONDUCTED ON PORTIONS OF AN INTERSTATE HIGHWAY IN NEW YORK AND ON A SPECIAL TEST SECTION AT THE WATERWAYS EXPERIMENT STATION IN VICKSBURG, MISSISSIPPI. TECHNIQUES FOR SENSOR INSTALLATION WERE DEVELOPED, POSSIBLE FIELD APPLICATIOHS WERE DEMONSTRATED, AND ADVANTAGES AND LIMITATIONS OF THE CONCEPT FOR COMPACTION EVALUATION WERE DETERMINED. THE INSTRUMENTATION SYSTEM PERFORMED SATISFACTORILY IN THE FIELD CONSTRUCTION ENVIRONMENT. THE SENSORS SURVIVED COMPACTION IN CRUSHED SLAG AND GRAVELLY BACKFILL. THE MEASUREMENT OF VERTICAL AND HORIZONTAL STRAINS PERMITTED CALCULATION OF PERCENTAGE OF DENSITY CHANGE. RESOLUTION WAS ABOUT 0.1 PERCENT STRAIN UNDER NORMAL CONDITIONS. A RECORDER DETECTED MUCH SMALLER CHANGES. STRAIN MEASUREMENTS WERE PARTICULARLY USEFUL FOR EVALUATING VARIATION OF COMPACTION WITH DEPTH, COMPACTION CHANGES WITH EACH ROLLER PASS, SECONDARY COMPACTION AS ADDITIONAL LAYERS WERE ADDED, VARIABILITY OF END RESULTS, AND DIFFERENCE IN CAPABILITY BETWEEN COMPACTORS.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/0309021693
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Supplemental Notes:
- Sponsored by Committee on Compaction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Selig, Ernest T
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Conference:
- 52nd Annual Meeting of the Highway Research Board
- Location: Washington District of Columbia, United States
- Date: 1973-1-22 to 1973-1-26
- Publication Date: 1973
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 34-44
- Monograph Title: Soil compaction and corrugations
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Serial:
- Highway Research Record
- Issue Number: 438
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Compactors; Evaluation; Field tests; Sensors; Soil compaction; Strain measurement
- Uncontrolled Terms: Field measurements
- Subject Areas: Construction; Geotechnology; Highways;
Filing Info
- Accession Number: 00215666
- Record Type: Publication
- ISBN: 0309021693
- Files: TRIS, TRB
- Created Date: Dec 22 1973 12:00AM