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Title:

APPLICATION OF STRAIN MEASUREMENTS TO SOIL COMPACTION EVALUATION

Accession Number:

00215666

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309021693

Abstract:

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.

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

Monograph Accession #:

01418572

Authors:

Selig, Ernest T

Pagination:

pp 34-44

Publication Date:

1973

Serial:

Highway Research Record

Issue Number: 438
Publisher: Highway Research Board

Conference:

52nd Annual Meeting of the Highway Research Board

Location: Washington District of Columbia, United States
Date: 1973-1-22 to 1973-1-26

ISBN:

0309021693

Media Type:

Print

Features:

Figures (16) ; References (5)

Uncontrolled Terms:

Field measurements

Subject Areas:

Construction; Geotechnology; Highways

Files:

TRIS, TRB

Created Date:

Dec 22 1973 12:00AM

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