SHALE IN CONCRETE AGGREGATES
THE DISCUSSION OF THE ORIGIN, CHARACTERISTICS AND METAMORPHIC PHASES OF SHALE PRESENTED BY DR. BEAN AT THE ELEVENTH ANNUAL MEETING IS SUPPLEMENTED BY A DISCUSSION OF THE EFFECTS OF SHALE IN AGGREGAES UPON THE CHARACTERISTICS OF CONCRETE WITH PARTICULAR REFERENCE TO THE FORMULATION OF SPECIFICATIONS FOR AGGREGATES. SHALEY MATERIALS ARE OBJECTIONABLE IN CONCRETE BECAUSE OF THEIR LOW RESISTANCE TO THE ACTION OF THE WEATHER. THE DEGREE OF HARMFULNESS DEPENDS UPON THE SEVERITY OF THE EXPOSURE, THE NATURE AND AMOUNT OF SHALE AND THE QUALITY OF THE CONCRETE. OWING TO DIFFERENECES IN THE CHARACTERISTICS OF THE MATERIALS CALLED SHALE, AND IN THE SEVERITY OF CLIMATIC CONDITIONS, SPECIFICATION LIMITS IN USE IN DIFFERENT LOCALITIES VARY WIDELY. A TABLE OF THE REQUIREMENTS N DIFFERENT PLACES IS INCLUDED. METHODS OF TESTING FOR UNSOUND AND NON-DURABLE PARTICLES ARE DISCUSSED, AND THE RESULTS OF INVESTIGATIONS ARE SUMMARIZED. /AUTHOR/
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Supplemental Notes:
- Vol 12, Pt 1, PP 273-304, 8 FIG, 10 TAB, 40 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:
- WALKER, S
- Proudley, C E
- Lang, F C
- Publication Date: 1933
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Twelfth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 1-2, 1932. Part I: Reports of Research Committees and Papers
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Serial:
- Highway Research Board Proceedings
- Volume: 12
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Climate; Concrete; Concrete aggregates; Materials tests; Physical properties; Quality control; Shale; Specifications; Weathering
- Uncontrolled Terms: Aggregate testing; Concrete properties; Quality
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00217828
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jun 1 1971 12:00AM