SYINERGISTIC ROLES OF SLAG AND SILICA FUME IN VERY HIGH-STRENGTH CONCRETE
A study was made of the microstructure of concrete in order to examine the characteristics of hydration progressing from 1 to 28 days. The microstructural changes occurring during this period are discussed. A very high-strength concrete (10% silica fume and 30% slag for cement replacement, HRWRA (high-range water-reducing admixtures), W/C = 0.20) was found to attain 94 MPa compressive strength at 28 days. The process of silica fume dissolution appears to begin early, within 1 day, and it is followed by the formation of a silica-rich gel at 7 days, and a final transformation into dense C-S-H (calcium-silicate-hydrate) within 28 days. Other study findings are also discussed.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
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Corporate Authors:
American Society for Testing and Materials (ASTM)
100 Barr Harbor Drive, P.O. Box C700
West Conshohocken, PA United States 19428-2957 -
Authors:
- Sarkar, S
- Aitcin, P-C
- Djellouli, H
- Publication Date: 1990
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 32-37
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Serial:
- Cement, Concrete and Aggregates
- Volume: 12
- Issue Number: 1
- Publisher: American Society for Testing and Materials (ASTM)
- ISSN: 0149-6123
- Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html
Subject/Index Terms
- TRT Terms: Calcium silicate; High strength concrete; Hydration; Microstructure; Silica fume; Slag; Synergism (Ecology); Water reducing agents
- Old TRIS Terms: Synergistic
- Subject Areas: Environment; Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 00496196
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 31 1990 12:00AM