The cost of the formwork is often the major factor in the total cost of cast-in-place reinforced concrete. The pressures exerted by the concrete on other than horizontal formwork have been determined in the past by empirical means. The advent of different cements, aggregates, and admixtures makes the use of the existing empirical expressions limited in applicability. A means of readily determining pressures on the formwork by means of laboratory tests is desirable. The triaxial test was used to determine the lateral pressures to be expected in formwork. The experiments were conducted using normal cement and aggregate, without admixtures. The results compared favorably with the empirical values currently being used. It is concluded that the triaxial test can be used to determine pressures which other concrete will exert.

  • Availability:
  • Supplemental Notes:
    • ACI Committee 347 Symposium Paper.
  • Corporate Authors:

    American Concrete Institute

    P.O. Box 19150, Redford Station, 22400 Seven Mile Road
    Detroit, MI  United States  48219
  • Authors:
    • Olsen, R H
    • Salck, F
    • Peck Jr, C F
  • Publication Date: 1974-7

Media Info

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Filing Info

  • Accession Number: 00261481
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM