The availability in New Zealand of aggregates suitable for use in concrete is considered, and criteria governing the choice of aggregate are discussed. The New Zealand standard for concrete aggregate is reviewed and attention is drawn to new features incorporated in a current draft revision of the old standard. Special mention is made of the proposal to replace sand grading requirements with the sand flow test. Lightweight aggregates are dealt with, and it is recommended that a technical advisory committee be formed to coordinate research on aggregates. /TRRL/

  • Corporate Authors:

    Department of Scientific and Industrial Research

    Lower Hutt,   New Zealand 
  • Authors:
    • Kennerley, R A
  • Publication Date: 1972


  • English

Media Info

  • Features: Figures; Photos; References;
  • Pagination: 32 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00083309
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: C.O. Rpt. No. 2139 R&D Rpt.
  • Files: ITRD, TRIS
  • Created Date: May 29 1975 12:00AM