ALKALI-REACTIVE CARBONATE ROCKS IN INDIANA - A PILOT REGIONAL INVESTIGATION

A STUDY OF CARBONATE ROCKS EXPOSED IN INDIANA INDICATED THAT BY UTILIZING STANDARD GEOLOGIC FIELD TECHNIQUES COUPLED WITH SPECIALLY DEVELOPED SIMPLE, RAPID LABORATORY TESTS, THE DISTRIBUTION OF THE REACTIVE ROCKS WITHIN THE VERTICAL SEQUENCE OF BEDS AND THE GEOGRAPHIC AREAS IN WHICH THESE REACTIVE ROCKS WERE EXPOSED COULD BE RAPIDLY DELINEATED. THE REACTIVE ROCKS ARE WIDELY DISTRIBUTED IN INDIANA, WITH HIGHLY REACTIVE MATERIAL PRESENT IN AT LEAST FIVE OF THE FORMATIONS EXPOSED. ROCK FROM AT LEAST ONE OF THESE HORIZONS IS CONSIDERED TO HAVE CAUSED THE DISRUPTION OF FIELD CONCRETE. FORTUNATELY, HOWEVER, THE REACTIVE BEDS ARE NORMALLY THIN, THE GENERAL LEVEL OF REACTIVITY IS LOW, AND MOST OF THE HIGHLY REACTIVE MATERIALS ARE OF POOR PHYSICAL QUALITY AND CONSEQUENTLY ARE NOT USED FREQUENTLY AS CONCRETE AGGREGATE. STUDIES ON LABORATORY CONCRETES SHOW THAT MANY OF THE MARGINALLY REACTIVE MATERIALS COULD BE SAFELY USED AS CONCRETE AGGREGATE IF ADEQUATE PRECAUTIONS WERE TAKEN. /AUTHOR/

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  • Authors:
    • Hadley, David W
  • Publication Date: 1964

Language

  • English

Media Info

  • Media Type: Print
  • Features: Appendices; Figures; References; Tables;
  • Pagination: pp 196-221
  • Monograph Title: Symposium on Alkali-Carbonate Rock Reactions
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00228558
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:37AM