DETERMINATION OF ASPHALT CONTENT IN HOT BITUMINOUS MIXES WITH A PORTABLE NEUCLEAR ASPHALT CONTENT GAGE
THIS STUDY WAS INITIATED AS A PRELIMINARY EVALUATION OF A PORTABLE NUCLEAR GAGE DEVELOPED TO DETERMINE ACCURATELY THE ASPHALT CONTENT OF HOT BITUMINOUS CONCRETE. STATISTICS INVOLVED IN THE RANDOM DECAY OF THE SOURCE AND THE BACKGROUND COUNT PREVIOUSLY HAD TENDED TO PLACE A LIMIT ON SENSITIVITY OF NUCLEAR DEVICES, USUALLY ON THE ORDER OF PLUS OR MINUS 0.25 PERCENT OF ACTUAL CONTENT. THE SENSITIVITY OF THE NEWLY DEVELOPED GAGE WAS SHOWN TO BE MUCH BETTER THAN THIS, USING INITIAL CALIBRATION RESULTS. SAMPLES OF HOT BITUMINOUS CONCRETE WERE PREPARED TO DEVELOP AN INITIAL SYSTEM CALIBRATION. MIXES WERE TESTED WITH THE NUCLEAR GAGE AND THE NUCLEAR TEST RESULTS WERE THEN PAIRED WITH ACTUAL DESIGN ASPHALT CONTENTS TO YIELD A REGRESSION CURVE. STANDARD DEVIATIONS WERE COMPUTED AND SOME RESULTS WERE COMPARED WITH RESULTS FOR THE SAME SAMPLES USING ASTM (1) METHODS. /AUTHOR/
- Digital Copy:
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Supplemental Notes:
- No 248, pp 77-81, 4 TAB, 3 REF
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Authors:
- Grey, R L
- Publication Date: 1968
Media Info
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Serial:
- Highway Research Record
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Alternatives analysis; Asphalt content; Bituminous mixtures; Hot mix asphalt; Nuclear engineering; Portable equipment; Regression analysis; Testing equipment
- Old TRIS Terms: Nuclear applications; Test results
- Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00211366
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jan 23 1994 12:00AM