SODIUM-GYPSUM MIXTURE, SCOPE AND SHORTCOMINGS

LE GYPSE SODE, SES POSSIBILITIES, SES LIMITES

Adding sodium to gypsum or to previously dried phosphogypsum produces a material which can be used as an activator for granulated slag. The effect of the gypsum and sodium mixture can be described through the chemical theory of setting. The sodium-gypsum system is similar to the gypsum-lime system. The slag hydration products formed are qualitatively different from those which develop through simple calcic, sodic or sulfatic activation. Compared with the normal lime activation, the potential quantity of hydrates is higher, provided the activating agent is used in greater quantities than those normally used in gravel and sand-slag techniques. /TRRL/

• Corporate Authors:

  Laboratoire Central des Ponts et Chausees (LCPC)

  Boulevard Lefebvre 58
  Paris Cedex 15,   France  F-75732
• Authors:
  • DRON, R
  • Voinovitch, I
• Publication Date: 1975-7-8

Language

• Undetermined

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 45-52
• Serial:
  • Bulletin de Liaison des Lab des Ponts et Chaussees
  • Issue Number: 78
  • Publisher: Laboratoire Central des Ponts et Chausees (LCPC)

Subject/Index Terms

• TRT Terms: Activation (Chemistry); Concrete curing; Granular materials; Granulated slag; Gypsum; Hydration; Setting (Concrete); Slag; Sodium
• Old TRIS Terms: Activation
• Subject Areas: Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00149645
• Record Type: Publication
• Source Agency: Central Laboratory of Bridges & Highways, France
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Jun 22 1977 12:00AM