THE EFFECT OF AGGREGATE SHAPE UPON THE STRENGTH OF STRUCTURAL LIGHTWEIGHT-AGGREGATE CONCRETE

The influence of the shape of a lightweight aggregate (A sintered fly-ash) upon the compressive strength of lightweight-aggregate concrete is described. The effective strength of the lightweight aggregate was calculated by extrapolation from the Bache-Christensen model. It is shown that: (A) the compressive strength of lightweight-aggregate concrete depends upon the shape of the aggregate particles- the concrete tested with rounded aggregate (N = 0.40) had a compressive strength about 6 to 8 N/MM2 greater than those with elongated form (length/thickness ratio 4.0); (B) the effective strength of lightweight aggregate depends upon the shape of the aggregate particles-the rounded aggregate particles used had a strength of approximately 25.0 N/MM2 and the elongated had strengths of approximately 17.5 N/MM2 and 20.0 N/MM2 for length/thickness ratios of 4 and 2, respectively. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
• Corporate Authors:

  An Foras Forbartha

  St Martin's House, Waterloo Road
  Dublin 4,   Ireland 
• Authors:
  • Czuryszkiewicz, A
• Publication Date: 1973

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 81-86
• Serial:
  • MAGAZINE OF CONCRETE RESEARCH
  • Volume: 25
  • Issue Number: 83
  • Publisher: Thomas Telford Limited
  • ISSN: 0024-9831

Subject/Index Terms

• TRT Terms: Aggregates by shape and surface texture; Compressive strength; Fly ash; Lightweight aggregates; Lightweight concrete; Mathematical models; Strength of materials
• Uncontrolled Terms: Aggregate shape
• ITRD Terms: 4577: Aggregate; 5532: Compression; 4580: Fly ash; 4740: Lightweight concrete; 9073: Shape; 5544: Strength (mater)
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00083291
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 29 1975 12:00AM