GAS ADSORPTION METHOD FOR TRUE SURFACE AREA OF CEMENT AND RELATED MATERIALS

Gas adsorption procedure based on the physical adsorption of gases/vapors on surfaces, as elaborated by Brunauer, Emmett and Teller (BET) gives the total or true surface area of any powdered material. Using the volumetric gas adsorption apparatus fabricated in CRI the amount of nitrogen gas adsorbed by the solid sample maintained at liquid nitrogen temperature (-195C) could be determined at different increasing equilibrium pressures and the data fitted into the BET equation. BET surface areas of selected samples, such as clay, limestone, portland cement, natural gypsum, fly ash and hydrated cement paste, as determined by CRI, are presented.

• Corporate Authors:

  Cement Research Institute of India

  M-10 South Extension II Ring Road
  New Delhi 1100049,   India 
• Authors:
  • Cisvesvaraya, H C
  • Subba Rao, V V
• Publication Date: 1975-1

Media Info

• Features: References;
• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Adsorption; Cement; Cement paste; Clay; Fly ash; Gases; Gypsum; Limestone; Methodology; Surfaces
• Uncontrolled Terms: Surface area
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00095751
• Record Type: Publication
• Report/Paper Numbers: SP-8
• Files: TRIS
• Created Date: Jul 2 1975 12:00AM