PROGRESS REPORT ON THE REACTION OF CALCIUM CHLORIDE ON PORTLAND CEMENT

THE ADDITION OF CALCIUM CHLORIDE APPEARS TO INCREASE THE HEAT CONTRIBUTED AT THE END OF 24 HOURS BY DICALCIUM SILICATE AND TETRACALCIUM FERRO-ALUMINATE AND TO DECREASE THE HEAT FROM TRICALCIUM ALUMINATE PRESENT IN CEMENTS. THE HEAT CONTRIBUTED BY TRICALCIUM SILICATE SHOWS VERY LITTLE CHANGE WHEN CALCIUM CHLORIDE IS ADDED. CALCIUM CHLORIDE INCREASES THE RATE AT WHICH THE HEAT IS EVOLVED FROM ALL CEMENTS TESTED AND IN GENERAL GIVES AN INCREASE OF ABOUT FOUR CALORIES PER GRAM OF CEMENT AT 24 HOURS. IT DECREASED THE TIME OF SET OF THE 11 COMMERCIAL CEMENTS AND INCREASED THE FLOW OF THE CONCRETE MIX AND THE STRENGTH OF RESULTING CONCRETE AT ALL AGES TO 90 DAYS, BEYOND WHICY RESULTS HAVE NOT YET BEEN OBTAINED. /AUTHOR/

  • Supplemental Notes:
    • Vol 13, ParT I, PP 291-299, 4 FIG, 2 TAB
  • Authors:
    • Rapp, P
    • Wells, L S
  • Publication Date: 1934

Media Info

  • Monograph Title: Proceedings of the Thirteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 7-8, 1933. Part I: Reports of Research Committees and Papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00213763
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 1971 12:00AM