USE OF SILICONE ADMIXTURE IN BRIDGE DECK CONCRETE
THE SILICONE ADMIXTURE WAS USED AND EVALUATED IN CONJUNCTION WITH BLAST-FURNACE SLAG COARSE AGGREGATE, WITH LIMESTONE COARSE AGGREGATE, AND WITH GRAVEL COARSE AGGREGATE ON THREE BRIDGE DECKS. IT WAS FOUND THAT THE BASIC LIQUID SILICONE ADMIXTURE ALTERED PLAIN CONCRETE BY (1) ENTRAINING AIR; (2) EXCESSIVELY RETARDING THE SET; (3) SERVING AS AN INTERNAL LUBRICANT AND PERMITTING A REDUCTION IN MIX WATER; (4) RAISING THE UNIT STRENGTH; AND (5) INCREASING THE RESISTANCE TO FREE-THAW DETERIORATION. IT FUNCTIONED EQUALLY WELL WITH ANY OF THE THREE AGGREGATES. THE SILICONE RETARDED THE FORMATION OF SCALE AS OBSERVED ON ALL THREE TEST BRIDGES.
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Supplemental Notes:
- Sponsored by Committee on Chemical Additions and Admixtures for Concrete. 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:
- Patterson, H L
- Publication Date: 1971
Media Info
- Media Type: Digital/other
- Features: Figures; Photos; References; Tables;
- Pagination: pp 61-74
- Monograph Title: Concrete
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Serial:
- Highway Research Record
- Issue Number: 370
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Admixtures; Bridge decks; Coarse aggregates; Concrete; Field tests; Freeze thaw tests; Silicones; Weighing devices
- Uncontrolled Terms: Scale
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00214095
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Apr 23 1972 12:00AM