A study is reported that shows that using silica fume in Type K expansive cement mortar helps to minimize, and possibly prevent, the damaging action of excessive expansion, while allowing the necessary expansion and prestress development. The details of the experimental program are described, including materials, mixing, casting, curing and testing, and mix proportions. Expansion modulus-curing time relationships are described as well as shrinkage-water loss-drying time relationships, compressive strength, and microstructure. Addition of silica fume to expansive mortar helps to develop a greater early-age stiffness. When using silica fume, the expansion time of expansive cement mortar can be more easily controlled. These and other findings are presented and discussed.

Media Info

  • Features: Figures; References;
  • Pagination: p. 31-37
  • Serial:
    • Concrete International
    • Volume: 13
    • Issue Number: 3
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00603357
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Feb 28 1991 12:00AM