SEASONAL TEMPERATURE EFFECT ON THE STRENGTH OF READY MIXED CONCRETE

This report by a working group of three industrial associations presents a joint investigation of the seasonal temperature effect on concrete strength under normal operating conditions in the UK ready mixed concrete industry, compared with the cement strength achieved when tested under standard laboratory conditions. The work conducted between March and August 1986 is described, and its results are discussed. The strength of concrete, supplied from 25 ready mixed concrete plants, was compared with the strength of cement from five supplying cement works. The results indicate a small decrease in average concrete strength with an increase in ambient temperature. The average decrease on concrete strength, allowing for changes in cement strength, was 1.2 N per sq mm for results combined from all five sources of cement. During the period of measurement, monthly mean ambient temperature typically rose from 5.0 to 17.5 degrees C, and corresponding estimated concrete temperatures were 12.0 to 21.5 degrees C. However, higher ambient temperatures may have a greater effect on ready mixed concrete strengths, and should be considered when comparing these strengths with standard cement strengths.

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  • Corporate Authors:

    CONCRETE SOCIETY

    London,   United Kingdom 
  • Authors:
    • Monk, M G
    • Brown, B V
    • EVANS, D
    • Pitcher, D C
  • Publication Date: 1989-10

Language

  • English

Media Info

  • Pagination: p. 22-24
  • Serial:
    • CONCRETE
    • Volume: 23
    • Issue Number: 9
    • Publisher: THE CONCRETE SOCIETY
    • ISSN: 0010-5317

Subject/Index Terms

Filing Info

  • Accession Number: 00606506
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM