THE EFFECT OF ADMIXTURES ON THE STRENGTH-POROSITY RELATIONSHIP OF PORTLAND CEMENT PASTES

THE EFFECT OF FOUR TYPES OF ADMIXTURES (FLYASH, WATER- REDUCING AGENTS, AN AIR-ENTRAINING AGENT AND LIMESTONE MINERAL POWDER) ON THE STRENGTH-POROSITY RELATIONSHIP OF PORTLAND CEMENT PASTE WAS STUDIED. THE VOLUME CONCENTRATION OF HYDRATE SUBSTANCE, AND HENCE POROSITY, APPEARS TO BE THE MOST IMPORTANT STRENGTH PARAMETER REGARDLESS OF THE PRESENCE OF ADMIXTURES. WHEN COMPARING THE EFFECT OF ADMIXTURES ON SUCH PROPERTIES AS CREEP AND SHRINKAGE IT WOULD APPEAR THAT THE VOLUME CONCENTRATION OF HYDRATE SUBSTANCE AS EXPRESSED BY THE HYDRATE SPACE RATIO IS A BETTER PARAMETER THAN TIME PER SEC. THESE DATA WOULD SEEM TO SUPPORT THE PREMISE THAT THE ORIGIN OF STRENGTH IN CEMENT PASTE IS LARGELY DUE TO PHYSICAL ATTRACTION OF PRIMARY PARTICLES I.E. VAN DER WAALS' FORCES. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Vol 1, No 1, PP 3-11
• Authors:
  • Beaudoin, J J
  • MacInnis, C
• Publication Date: 1971-1

Media Info

• Serial:
  • Cement and Concrete Research
  • Volume: 1
  • Issue Number: 1
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Admixtures; Air entraining agents; Creep; Fly ash; Hydrates; Limestone dust; Porosity; Portland cement; Shrinkage; States of matter; Strength of materials
• Old TRIS Terms: Van der waals equation
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213873
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 10 1971 12:00AM