PETROGRAPHIC EXAMINATION OF NATURAL CONCRETE AGGREGATES
METHODS USED IN THE PETROGRAPHIC EXAMINATION OF COARSE AND FINE NATURAL CONCRETE AGGREGATE ARE DESCRIBED. FEATURES OF AGGREGATES, BASED ON THEIR COMPOSITION, STRUCTURE, AND TEXTURE, INFLUENCING THE QUALITY OF A CONCRETE ARE DISCUSSED. IN ADDITION TO STANDARD PETROGRAPHIC METHODS THE COPPER NITRATE STAINING TEST HAS BEEN FOUND USEFUL FOR BOTH IDENTIFICATION AND APPRAISAL OF CARBONATE MATERIALS. ATTENTION IS ALSO DRAWN TO THE NEED FOR FURTHER TESTING OF SPECIAL AGGREGATES, SUCH AS THE ALKALI-SILICA-REACTIVE OR THE ALKALI-CARBONATE ROCK-REACTIVE AGGREGATES AND THOSE CONTAINING CLAY MINERALS. THE ROLE OF THE PETROGRAPHER IS STRESSED IN COMPLEMENTING AND INTERPRETING STANDARD ACCEPTANCE TESTS DESIGNED TO DETERMINE THE SUITABILITY OF A GIVEN MATERIAL AS CONCRETE AGGREGATE. /AUTHOR/
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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.
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Authors:
- Dolar-Mantuani, L
- Publication Date: 1966
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 7-17
- Monograph Title: Aggregate characteristics and examination
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Serial:
- Highway Research Record
- Issue Number: 120
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Alkali aggregate reactions; Carbonates; Clay minerals; Coarse aggregates; Concrete aggregates; Fine aggregates; Geological surveying; Identification systems; Materials selection; Natural aggregates; Petrography; Quality control; Structures; Test procedures; Texture
- Uncontrolled Terms: Identification; Quality
- Old TRIS Terms: Cement-aggregate reaction; Copper nitrate test; Petrographic investigations; Stain test
- Subject Areas: Bridges and other structures; Geotechnology; Highways;
Filing Info
- Accession Number: 00217443
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Nov 18 1994 12:00AM