ASSESSMENT OF IN-SITU CONCRETE STRENGTH

The article presents the results of tests intended to relate concrete cube strength, cured in air and water, with in-situ "structural" core strengths. The hypothesis of Tomsett on the ultrasonic pulse velocity method of concrete strength test is also investigated. The hypothesis states that the graph of log equivalent cube crushing structural strength against pulse velocity is different from that obtained for the same concrete made into cubes and tested to BS1881. The concrete mixes tested were arranged in increasing coarse aggregate proportion and increasing water/cement ratio. Fifteen 100 mm cubes, three 500 x 100 x 100 mm prisms and an unreinforced slab "structure" were tested from each batch. Conclusions discuss the results of the strength tests and the relationship between pulse velocity through concrete and its component parts to estimate water/cement ratio of in-situ concrete. /TRRL/

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Mayfield, B
    • Witham, R P
  • Publication Date: 1979-2

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Subject/Index Terms

Filing Info

  • Accession Number: 00194974
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM