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Component

http://onlinepubs.trb.org...s/hrr/1972/412/412-001.pdf

THE TROXLER ASPHALT-CONTENT GAUGE, MODEL 2226, WAS EVALUATED IN THE LABORATORY AND TAKEN INTO THE FIELD WHERE ITS RESULTS WERE COMPARED TO CONVENTIONAL REFLUX VALUES. THE PRECISION AS EVALUATED IN THE LABORATORY WAS FOUND TO BE EXCELLENT, EQUIVALENT TO 0.06 PERCENT ASPHALT WITH A 45-SEC COUNT. THE GAUGE HAS TO BE RECALIBRATED FOR DIFFERENT AGGREGATES AND, AS A PRACTICAL MATTER, SHOULD BE RECALIBRATED FOR DIFFERENT MIX TYPES. SAMPLE PREPARATION IS IMPORTANT, AND THE SAMPLES SHOULD BE AS UNIFORM AS POSSIBLE. THE ACCURACY APPEARS TO BE AS GOOD AS THAT OF THE REFLUX EXTRACTOR.

Sponsored by Committee on Nuclear Principles and Applications. 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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pp 1-8

1972

Highway Research Record

51st Annual Meeting of the Highway Research Board

0309020840

Digital/other

Figures (5) ; References (7) ; Tables (8)

Aggregates; Asphalt content; Bituminous mixtures; Calibration; Laboratory tests; Measuring instruments; Nuclear engineering

Geotechnology; Highways; Materials

TRIS, TRB

Apr 17 1973 12:00AM

• COMPARATIVE INVESTIGATIONS OF INTERNATIONAL TEST METHODS FOR SMALL-SIZED COARSE AGGREGATES
• CONCRETE ANALYSIS BY NEUTRON-CAPTURE GAMMA RAYS USING CALIFORNIUM 252
• CORROSION AND SERVICE LIFE OF CORRUGATED METAL PIPE IN KANSAS
• GLASS BEADS IN PAINT
• MEASUREMENT OF AUTOMOBILE EXHAUST POLLUTANT CONCENTRATIONS BY USE OF SOLID KRYPTONATES
• WATER CONTENT OF FRESH CONCRETE MEASURED BY NEUTRON RADIATION