DURABILITY OF SELF-CONSOLIDATING CONCRETE INCORPORATING HIGH-VOLUME REPLACEMENT COMPOSITE CEMENTS

Self-consolidating concrete (SCC) is a material that can flow under its own weight, so that it can be easily placed, without need for additional mechanical compaction, in complicated formwork, congested reinforced structural elements, and hard-to-reach areas. However, because SCC usually requires a larger content of binder and chemical admixtures compared to ordinary concrete, its material cost is generally 20-50% higher. This article reports on a study of the use of high volumes of mineral admixtures and microfillers as partial replacement for portland cement in SCC, in order to make it cost effective. The authors investigate the rapid chloride ion penetrability, sulfate expansion and deicing salt surface scaling resistance of SCC mixtures made with high-volume replacement binary, ternary, and quaternary cements. The fresh concrete properties and compressive strength at 1, 7, 28 and 91 days of such SCC mixtures were measured. The study also considered rapid chloride ion penetrability, deicing salt surface scaling, and sulfate expansion. The results indicate that SCC can be made with high-volume replacement composite cements and achieve good workability, high long-term strength, good deicing salt surface scaling resistance, low sulfate expansion and very low chloride ion penetrability. The authors conclude that high-volume replacement SCC has not only the workability and ease of construction benefits associated with conventional SCC, but can also achieve much enhanced long-term durability.

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• Corporate Authors:

  Elsevier

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  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Nehdi, M
  • Pardhan, M
  • Koshowski, S
• Publication Date: 2004-11

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 2103-2112
• Serial:
  • Cement and Concrete Research
  • Volume: 34
  • Issue Number: 11
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Admixtures; Chloride content; Cost effectiveness; Durability; Freeze thaw durability; Portland cement; Rheology; Self compacting concrete; Sulfate resisting cement
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00986478
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 8 2005 12:00AM