RATE OF SEDIMENTATION: I. NONFLOCCULATED SUSPENSIONS OF UNI- FORM SPHERES; II. SUSPENSIONS OF UNIFORM-SIZE ANGULAR PARTICLES; III. CONCENTRATED FLOCCULATED SUSPENSIONS OF POWDERS

IN THESE THREE PAPERS, A THEORY OF SEDIMENTATION IN PORTLAND CEMENT PASTES IS DEVELOPED BY STUDIES OF SUSPENSIONS OF A VARIETY OF FINE POWDERS, INCLUDING TAPIOCA, GLASS SPHERES, EMERY, GROUND GLASS, BURNED SHALE, SILICA, AND LIMESTONE. VARIOUS CONCENTRATIONS AND FINENESSES WERE USED TO DETERMINE THE EFFECTS OF PARTICLE INTERFERENCE, ADHESION OF THE LIQUID, AND FLOCCULATION. A RATE EQUATION IS DERIVED AND SHOWN TO BE CONSISTENT WITH POWERS' EQUATION FOR CEMENT PASTES. /PCA/

• Authors:
  • Steinour, H H
• Publication Date: 0

Media Info

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

Subject/Index Terms

• TRT Terms: Adhesion; Equations; Fineness; Flocculating agents; Pastes; Portland cement; Rates; Sedimentation; Suspensions; Theory
• Old TRIS Terms: Flocculating
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213455
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 3
• Files: TRIS
• Created Date: May 25 1970 12:00AM