DETERMINATION OF THE FREE CALCIUM HYDROXIDE CONTENTS OF HYDRATED PORTLAND CEMENTS AND CALCIUM SILICATES

TWO NEW MODIFICATIONS OF THE FRANKE METHOD FOR THE DETERMINATION OF FREE CALCIUM HYDROXIDE IN HYDRATED PORTLAND CEMENTS AND CEMENT COMPOUNDS ARE PRESENTED. RESULTS FOR HYDRATED CALCIUM SILICATES COMPARE FAVORABLY WITH VALUES CALCULATED ON THE BASIS OF THE STOICHIOMETRY OF HYDRATION. FREE CALCIUM HYDROXIDE VALUES, DETERMINED BY X-RAY QUANTITATIVE ANALYSIS, ARE LOW. THE METHODS HAVE ALSO BEEN USED FOR HYDRATED PASTES. RESULTS FOR TYPES II AND IV CEMENTS WERE HIGHER THAN THOSE DETERMINED BY X-RAYS. A METHOD FOR CORRECTING THIS EFFECT IS PRESENTED. /PCA/

• Authors:
  • Pressler, E E
  • Brunauer, S
  • Kantro, D L
  • Weise, C H
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Calcium compounds; Hydration; Hydroxides; Portland cement; Silicates; Stoichiometry; X ray analysis
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213568
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 127
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM