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Title: ALKALI-REACTIVE CARBONATE ROCKS IN INDIANA - A PILOT REGIONAL INVESTIGATION
Accession Number: 00228558
Record Type: Component
Abstract: 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/
Supplemental Notes: 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
Monograph Title: Monograph Accession #: 01410012
Language: English
Authors: Hadley, David WPagination: pp 196-221
Publication Date: 1964
Serial: Media Type: Print
Features: Appendices
(1)
; Figures
(20)
; References
(12)
; Tables
(8)
TRT Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways
Files: TRIS, TRB
Created Date: Aug 15 2004 2:37AM
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