Solvent exchange in sulfoaluminate phases. Part II: Monosulfate

  1. Get@NRC: Solvent exchange in sulfoaluminate phases. Part II: Monosulfate (Opens in a new window)
DOIResolve DOI:
AuthorSearch for: ; Search for: ; Search for: ; Search for:
Journal titleAdvances in Cement Research
Pages322331; # of pages: 10
AbstractThe influence of organic solvent exchange techniques on the microstructure and the dimensional stability of monosulfate (3CaO.Al2O 3.CaSO4.12H2O) was critically investigated. Monosulfate samples were treated with methanol, ethanol and isopropanol, and examined by different analytical techniques including X-ray diffraction, Fourier transform infrared spectroscopy, thermal gravimetric analysis and scanning electrom microscopy. Nitrogen surface area measurements (Brunauer-Emmett-Teller (BET) method) and length-change of the monosulfate samples in the solvents were also recorded. Evidence was obtained that indicates monosulfate was readily dehydrated from 12 water molecules to ten water molecules once it was treated by the investigated alcohols. The alcohol molecules, however, likely intercalated into the monosulfate structure, limiting an expected decrease in the interlayer distance of the monosulfate structure. Methanol had the greatest damaging effect on the monosulfate microstructure. Ethanol, however, resulted in higher long-term expansion owing to its intermediate molecular size and reactivity with monosulfate compared to methanol and isopropanol.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21270926
Export citationExport as RIS
Report a correctionReport a correction
Record identifieref2f90f1-b3ca-42fd-ba83-afbc851e526d
Record created2014-02-18
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: