HIGH-PRESSURE STEAM CURING OF HIGH-SLAG CEMENT I. COMPOSITION OF THE HYDRATED CEMENT

The phases formed in a high-slag cement on curing in saturated steam at 180 lbf/in2 have been investigated. X-ray diffraction revealed that in the presence of the suitable addition of fine quartz, 11-a tobermorite was the predominant phase formed in an autoclaving period of 5h at maximum pressure; the phases identified in neat slag cement were 11-a tobermorite and hillebrandite. The same phases were identified in the samples autoclaved for 6h, in addition to minor amount of xonotlite. Chemical analysis of the same hydrated samples has shown that the molar cao/sio2 ratio was 1.27 for the cement-quartz and 1.49 for the neat cement for the 5-h autoclaving period, and 1.35 and 1.57, respectively, for the 6-h period. /AUTHOR/

• Corporate Authors:

  Academic Press Incorporated

  24-28 Oval Road
  London NW1 7DX,   England 
• Authors:
  • Kamel, AAH
• Publication Date: 1973

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 483-488
• Serial:
  • Journal of Applied Chemistry
  • Volume: 23
  • Issue Number: 7

Subject/Index Terms

• TRT Terms: Cement; Chemical analysis; Chemical composition; Concrete curing; Hydration; Pressure; Quartz; Slag cement; Steam curing
• ITRD Terms: 4758: Cement; 7163: Chemical analysis; 4702: Curing (concrete); 7195: Hydration; 5412: Pressure; 4123: Quartz; 4561: Slag; 6713: Steam
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00083329
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 29 1975 12:00AM