A NEW ADDITION TO ACCELERATE THE SETTING AND HARDENING OF 'SPRITZBETON' (SHOTCRETE)

THE ADDITION OF SODIUM FLUORIDE (1-3% OF THE CEMENT WEIGHT) THAT IS INJECTED INTO "SPRITZBETON" (SHOTCRETE) IS SUGGESTED IN THIS PAPER. THIS ADDITION ACCELERATES CONCRETE SETTING CAPACITY FROM 1-3 MINUTES. THUS IT HELPS TO FORM THE STRUCTURE OF HARDENING CONCRETE AND INCREASE ITS COMPRESSION STRENGTH. THE SODIUM FLUORIDE ADDITION IS GOOD FOR CONCRETES HARDENED BELOW ZERO DEGREES C. THE HIGHEST EFFECT OF SODIUM FLUORIDE IS OBTAINABLE WHEN IT IS USED WITH CEMENT THAT HAS A HIGH PERCENTAGE OF TRICALCIUM ALUMINATE 3 (NOT LESS THAN 7% AND 3 TRICALCIUM SILICATE (HIGHER THAN 45-50%). /CRIC/ FESR/RRL/A/

• Supplemental Notes:
  • pp 105-113, 1 FIG, 1 TAB, 3 REFS
• Authors:
  • Satalkin, A V
  • Solntsev, V A
• Conference:
  • Intl Symp Admix Mortar & Concr /Belg/
• Publication Date: 1967

Subject/Index Terms

• TRT Terms: Accelerating agents; Admixtures; Aluminates; Calcium compounds; Cement additives; Compressive strength; Concrete curing; Concrete hardening; Fluorides; Hardness; Shotcrete; Silicates; Sodium compounds
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00212956
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: May 4 1970 12:00AM