COMPACTION CONTROL BY RATIO OF VOLUME OF GYRATORY SPECIMENS TO VOLUME OF TEST HOLES
EIGHTEEN SOIL MATERIALS VARYING FROM SUBGRADE SOILS TO FLEXIBLE BASE MATERIALS WERE INVESTIGATED FOR THE RELATIONSHIP BETWEEN THE COMMONLY USED TEXAS COMPACTION RATIO DENSITY AND THE DENSITY OBTAINED BY CERTAIN GYRATORY COMPACTION PROCEDURES. THE DEGRADATION OF THREE OTHER SOFT CRUSHED LIMESTONE SAMPLES CAUSED BY USE OF THE GYRATORY PROCEDURE WAS INVESTIGATED. THE DATA OBTAINED INDICATE THAT A METHOD HAS BEEN ESTABLISHED WHEREBY GYRATORY DENSITIES (WHEN MODIFIED WITH A COMPACTION K FACTOR) CAN BE RELATED TO THE COMPACTION RATIO DENSITIES THAT ARE COMMONLY SPECIFIED IN TEXAS. THE METHOD PROVIDES FOR TESTING THE SAME MATERIAL THAT IS OBTAINED IN DIGGING TEST HOLES, THEREBY ELIMINATING THE NECESSITY FOR PERFORMING PRELIMINARY MOISTURE-DENSITY CURVES AND ALSO THE "GUESSING GAME" FOR IDENTIFYING THE PROPER MOISTURE- DENSITY CURVE FOR USE. FOR MOST FLEXIBLE BASE MATERIALS, THE METHOD SHOULD BE FAIRLY RAPID IN THAT MOISTURE CONTENT DETERMINATIONS CAN BE ELIMINATED BECAUSE DRY WEIGHT IS A CONSTANT AND CANCELS OUT OF THE CALCULATIONS. RESULTS INDICATE THAT A RATHER LARGE AMOUNT OF DEGRADATION DOES OCCUR BUT ITS PRESENCE DOES NOT CAUSE THE SHAPE OR MAGNITUDE OF MOISTURE-DENSITY RELATIONSHIP CURVES TO CHANGE. /AUTHOR/
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Supplemental Notes:
- Sponsored by Committee on Compaction and presented at the 50th Annual Meeting. 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:
- McDowell, Chester
- Smith, Avery W
- Publication Date: 1971
Media Info
- Media Type: Digital/other
- Features: Figures; Tables;
- Pagination: pp 7-20
- Monograph Title: Soil: compaction, classification and laterites
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Serial:
- Highway Research Record
- Issue Number: 374
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Compaction; Density; Materials; Moisture content; Soil compaction; Soil tests; Soils
- Uncontrolled Terms: Gyratory compaction
- Subject Areas: Construction; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00215494
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: May 16 1972 12:00AM