CARBONATION OF HYDRATED PORTLAND CEMENT

EXISTING EXPERIMENTAL AND PHYSICOCHEMICAL EVIDENCE REGARDING CARBONATION OF THE CONSTITUENTS OF PORTLAND CEMENT IS REVIEWED AND INDICATES THAT SUBSTANTIALLY ALL OF THE CONSTITUENTS OF CEMENT ARE SUBJECTED TO ULTIMATE CARBONATION UNDER IDEAL CONDITIONS. HUMIDITY DURING EXPOSURE TO CARBON DIOXIDE APPEARS TO BE A MAJOR FACTOR INFLUENCING THE SHRINKAGE DIRECTLY BY CARBONATION. CONCENTRATION OF CARBON DIOXIDE AND SIZE OF SPECIMEN ALSO HAVE IMPORTANT EFFECTS. INCREASED SUBSEQUENT VOLUME STABILITY TO MOISTURE CHANGE WAS OBTAINED BY PRIOR CARBONATION. THE INFLUENCE OF HIGH-PRESSURE STEAM CURING PROCEDURES ON SOME PHYSICAL PROPERTIES OF CEMENT PASTES CONTAINING SILICEOUS ADDITIONS IS PRESENTED. /PCA/

• Authors:
  • Verbeck, G J
• Publication Date: 0

Media Info

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

Subject/Index Terms

• TRT Terms: Carbon dioxide; Carbonization; Humidity; Hydration; Pastes; Portland cement; Shrinkage; Steam curing
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213533
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 87
• Files: TRIS
• Created Date: May 25 1970 12:00AM