CAUSES, MECHANISMS AND CONTROL OF SURFACE VOIDS

The author distinguishes three types of voids in a concrete surface: water voids, air voids, and attached voids. If sands with higher surface area factor, and a smaller size of gravel with smoother surface and a spherical shape are used, plus longer mixing than classical preparation, with vibration, hammering and revibration, a concrete can be manufactured not only without surface voids but also with a strength as high as 10,000 PSI. Appendix 1 describes a mechanism for increasing concrete strength by using a larger size gravel with the same quantity of water, cement and sand. Appendix 2 describes experiments which were undertaken to find a mix producing a concrete without, or with few, voids. /TRRL/

  • Availability:
  • Corporate Authors:

    Cement and Concrete Association

    52 Grosvenor Gardens
    London SW1W 0AQ,   England 
  • Authors:
    • Stamenkovic, H
  • Publication Date: 1973

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 45-48
  • Serial:
    • CONCRETE
    • Volume: 7
    • Issue Number: 7
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00083293
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: May 29 1975 12:00AM