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/

  • Supplemental Notes:
    • Vol 12, Pt 1, PP 273-304, 8 FIG, 10 TAB, 40 REF
  • Authors:
    • WALKER, S
    • Proudley, C E
    • Lang, F C
  • Publication Date: 1933

Media Info

  • 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
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00217828
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 1 1971 12:00AM