CHEMICAL EXPANSION OF FRESH CONCRETE BY USE OF ALUMINUM POWDER AND ITS EFFECT ON STRENGTH
LABORATORY EVALUATION OF THE EXPANSION OF FRESH CONCRETE RESULTING FROM THE ADDITION OF POWDERED ALUMINUM IS DESCRIBED. THE RESULTS SHOW THAT THE RESTRAINING OF THE FRESH CONCRETE IS AS IMPORTANT AS THE AMOUNT OF EXPANSION AGENT IN DETERMINING THE COMPRESSIVE STRENGTH OF THE HARDENED MATERIAL. IT WAS FOUND THAT THE INCREASE IN VOLUME DUE TO THE EXPANSION AGENT REDUCES THE STRENGTH OF THE HARDENED MIXTURE, WHEREAS CONFINEMENTS OF THE FRESH MIXTURE TO RETARD EXPANSION RESTORES THE STRENGTH ACCORDING TO THE FINAL VOLUME ACHIEVED BY FRESH MIXTURE. RESULTS ARE PRESENTED THAT SHOW THE CHANGE IN VOLUME THAT CAN BE EXPECTED FOR VARIOUS AMOUNTS OF EXPANSION AGENT AND THE EFFECT OF UNIAXIAL CONFINING PRESSURE ON THE EXPANSION AND STRENGTH. /AUTHOR/
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Supplemental Notes:
- Paper sponsored by Committee on Mechanical Properties of Concrete and presented at the 47th Annual Meeting. 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:
- Linger, D A
- Publication Date: 1968
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: pp 34-39
- Monograph Title: Mechanical properties of plastic concrete and pavement thickness measurement
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Serial:
- Highway Research Record
- Issue Number: 218
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aluminum; Compressive strength; Concrete hardening; Expansion; Polymer concrete; Powders; Volume changes
- Uncontrolled Terms: Confinement; Hardened concrete
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00212649
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 5 1994 12:00AM