THE ROLE OF AGGREGATES IN OPEN-VOID FORMATION IN EPOXY RESIN SEALCOATS
A LABORATORY INVESTIGATION WAS INITIATED TO ESTABLISH WHAT ROLE AGGREGATES PLAY IN PRODUCING OPEN VOIDS IN EPOXY RESIN SEALCOATS. THE NUMBER OF VOIDS WAS OBTAINED USING A PHOTOGRAPHIC TECHNIQUE EMPLOYING A SPARKING DEVICE. SIZES AND CONFIGURATIONS WERE IDENTIFIED UTILIZING A LIGHT BOX. VOID FORMATION WAS FOUND TO BE A FUNCTION OF BOTH AGGREGATE PARTICLE SHAPE AND SIZE. IN GENERAL, AS PARTICLE SHAPE CHANGED FROM ANGULAR TO ROUND AND PARTICLE SIZE DECREASED, THE NUMBER AND SIZE OF OPEN VOIDS DECREASED. SINGLE FRACTIONS PRODUCED SEALCOATS WITH FEWER OPEN VOIDS THAN COMPOSITE BLENDS CONTAINING TWO OR MORE OF THOSE FRACTIONS. SEALCOATS THAT WERE ESSENTIALLY FREE OF OPEN VOIDS WERE CONSTRUCTED WITH ROUNDED AGGREGATES, PARTICULARLY WHEN SIZES SMALLER THAN 0.033 IN. /NO. 20 SIEVE/ WERE EMPLOYED. /AUTHOR/
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Supplemental Notes:
- Paper sponsored by Committee on Maintenance of Structures and presented at the 46th 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:
- Kubitschek, H E
- Publication Date: 1967
Media Info
- Media Type: Print
- Features: Figures; Photos; Tables;
- Pagination: pp 1-14
- Monograph Title: Aggregates and concrete durability
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Serial:
- Highway Research Record
- Issue Number: 196
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Epoxy resins; Forming; Laboratory tests; Particles; Photography; Seal coats; Shape; Size; Void ratios
- Old TRIS Terms: Light box; Particle shapes; Void
- Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Materials;
Filing Info
- Accession Number: 00218146
- Record Type: Publication
- Report/Paper Numbers: HS-000 708
- Files: TRIS, TRB
- Created Date: Mar 2 1994 12:00AM