HYDRATION OF FLY ASH CEMENT AND MICROSTRUCTURE OF FLY ASH CEMENT PASTES

The strength development and hydration of fly ash cement and the influence of addition of gypsum on those were studied at normal and elevated temperatures. It was found that an addition of a proper amount of gypsum to fly ash cement could accelerate the pozzolanic reaction between ch and fly ash, and as a result, increase the strength of fly ash cement pastes after 28 days. The changes in the microstructure of fly ash cement pastes with the curing time and temperatures were observed by scanning electron microscopy (SEM). An attempt was made to relate the strength properties to the microstructure of the fly ash cement paste by addition of a proper amount of gypsum and by elevation of the curing temperature. The concept of the fracture mechanism of fly ash cement paste was discussed. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03468240
• Corporate Authors:

  Cement and Concrete Research Institute

  Drottning Kristinas Vaeg 26
  Stockholm 70,   Sweden 
• Authors:
  • Shiyuan, H
• Publication Date: 1981

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 79 p.
• Serial:
  • Publication of: Cement and Concrete Research Institute
  • Publisher: Cement and Concrete Research Institute
  • ISSN: 0346-8240

Subject/Index Terms

• TRT Terms: Cement; Cement paste; Chemical compounds; Concrete curing; Curing agents; Electron microscopes; Electronics; Fly ash; Fracture mechanics; Gypsum; Hydration; Microscopes; Microstructure; Pozzolan; Pozzolanic action; Scanners; Strength of materials; Temperature; Temperature measurement
• Uncontrolled Terms: Fracture
• Old TRIS Terms: Scanning
• ITRD Terms: 4758: Cement; 4767: Cement paste; 4703: Curing agent; 6965: Electronics; 4580: Fly ash; 4175: Gypsum; 7195: Hydration; 6790: Microscope; 4185: Pozzolan; 5544: Strength (mater); 6710: Temperature measurement
• Subject Areas: Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00370773
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Report/Paper Numbers: No. 2:81 Monograph
• Files: ITRD, TRIS
• Created Date: Mar 31 1983 12:00AM