APPLICATION OF PULSE VELOCITY TESTS TO SEVERAL LABORATORY STUDIES OF MATERIALS
THE FUNCTION OF THE SONISCOPE IN ITS VARIOUS APPLICATIONS TO THE STUDY OF MATERIALS IS DISCUSSED. THREE LABORATORY INVESTIGATIONS ARE REVIEWED. FIRST, THE SONISCOPE WAS USED TO MEASURE THE SETTING TIME OF CONCRETE. FOUR CEMENTS (ASTM TYPES I, II, III AND IV) WERE USED TO MAKE CONCRETES OF A RATHER STIFF CONSISTENCY. VELOCITY TESTS WERE MADE PERIODICALLY FROM SOON AFTER THE SPECIMANS WERE CAST UNTIL AT LEAST 8 HR HAD ELAPSED. IT WAS CONCLUDED THAT FOR THE SPECIMENS TESTED THE SETTING TIME OF CONCRETE COULD BE DETERMINED BY THE PULSE VELOCITY TECHNIQUE. SECOND, THE PULSE VELOCITY TECHNIQUE WAS COMPARED TO THE RESONANT FREQUENCY TECHNIQUE AS A MEANS OF FOLLOWING THE DETERIORATION OF CONCRETES SUBJECTED TO ALTERNATE FREEZING AND THAWING. IN ADDITION, TWO OF THE TEST SERIES INCLUDED DYNAMIC DETERMINATIONS OF POISSON'S RATIO WHICH, IN TURN, WERE USED TO CALCULATE E-VALUES FROM THE PULSE VELOCITY TESTS. THESE VALUES ARE COMPARED WITH VALUES OBTAINED FROM RESONANT FREQUENCY TESTS. IT WAS CONCLUDED THAT THE VELOCITY TESTS WERE LESS SENSITIVE THAN RESONANT FREQUENCY MEASUREMENTS AS A MEASURE OF THE DETERIORATION OF THE CONCRETE SPECIMENS. THIRD, THE SONISCOPE WAS USED TO MEASURE THE PROGRESSIVE DETERIORATION OF LIME-STABILIZED SOILS SUBJECTED TO ALTERNATE FREEZING AND THAWING. IN THIS CASE, THE TECHNIQUE EMPLOYED SEEMED TO BE AN ADEQUATE MEASURE OF DETERIORATION. THE CHANGES IN VELOCITY THAT WERE NOTED SEEMED HIGHLY INDICATIVE OF CHANGES IN THE QUALITY OF THE SPECIMENS TESTED. /AUTHOR/
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Supplemental Notes:
- No 206, pp 14-27, 9 FIG, 4 TAB, 10 REF 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:
- Woods, K B
- McLaughlin, J F
- Publication Date: 1959
Media Info
- Monograph Title: Effects of concrete characteristics on the pulse velocity
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Serial:
- Highway Research Board Bulletin
- Issue Number: 206
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Calcium oxide; Concrete; Concrete curing; Durability; Freeze thaw durability; Laboratory studies; Poisson ratio; Pulses; Resonance frequency; Soil stabilization; Velocity measurement
- Uncontrolled Terms: Pulse velocity tests
- Old TRIS Terms: Freezing thawing effects; Poissons ratio; Soniscope
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00213236
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Sep 12 1994 12:00AM