EXPANSIVE CEMENT

The results are reported of studies on an expansive cement prepared by blending portland cement, calcined metakaolinite and calcium sulfate. A hypothesis has been proposed for the mechanism of expansion associated with formation of ettringite. In a discussion of the hypothesis, attention is drawn to work that should be considered in evaluating the hypothesis; another mechanism is also proposed. A research effort relating to properties and type of K expansive cement of pure components, proposes a mechanicsm of ettringite formation in unrestrained paste of pure component. This involved a study of the reaction of an expansive cement paste which consisted of compounds in proportions required by the equation: C4A3S + 8CSH2 + 6CH + 71H = 3(C3A.3CS.31H).

• Corporate Authors:

  United States Gypsum Company

  Department No. 119-7, 101 South Wacker Drive
  Chicago, IL  United States  60606
• Publication Date: 1975-10

Media Info

• Pagination: p. 3-4
• Serial:
  • SO3 Abstracts and Newsletter
  • Volume: 12
  • Issue Number: 2
  • Publisher: United States Gypsum Company

Subject/Index Terms

• TRT Terms: Blending; Calcines; Calcium compounds; Chemical reactions; Equations; Ettringite; Expansive cement; Kaolinite; Portland cement; Research; Sulfates
• Subject Areas: Highways; Materials; Research;

Filing Info

• Accession Number: 00127952
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 10 1976 12:00AM