EVALUATION OF METHODS OF IDENTIFYING PHASES OF CEMENT PASTE

The utility (strengths and weaknesses) was examined of 3 methods (X-ray diffraction differential thermal analysis, and infrared spectroscopy) of analysis of hardened cement paste. Tests were performed on 37 samples in 11 laboratories in 3 countries. The seven hydrates considered were: Ettringite, tetracalcium aluminate monsulfuate-12- hydrate, tetracalcium aluminate carbonate-11-hydrate, tetracalcium aluminate hemicarbonate-12-hydrate, tetracalcium aluminate hydrate, alite hydrated for about 5.4 years at 70 F, and belite similarly hydrated. Details are outlined of the 30 partially hydrated cement pastes (prepared with 3 portland cements using varying water to cement (w/c) ratios and curing times) and the preparation of the cement paste samples.

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  • https://onlinepubs.trb.org/Onlinepubs/trcircular/176/176.pdf
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  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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• Publication Date: 1976-6

Media Info

• Media Type: Digital/other
• Pagination: 47 p.
• Serial:
  • Transportation Research Circular
  • Issue Number: 176
  • Publisher: Transportation Research Board
  • ISSN: 0097-8515

Subject/Index Terms

• TRT Terms: Aluminum compounds; Calcium compounds; Cement paste; Concrete curing; Differential thermal analysis; Diffraction; Ettringite; Evaluation; Hydrates; Infrared spectroscopy; Interviewing; Portland cement concrete; Samples; Testing; Water cement ratio; X rays
• Uncontrolled Terms: X-ray diffraction
• Old TRIS Terms: Phase
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00141047
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Oct 6 1976 12:00AM