DESIGN OF SHRINKAGE-COMPENSATING CONCRETE SLABS

Initial results are reported from a laboratory investigation to determine time-dependent properties of reinforced concrete slabs made with shrinkage-compensating concretes. Structural design details that influence the degree of shrinkage compensation are outlined and their effects are discussed. These details include type of cement, type of external restraint, percentage and position of reinforcement and type of concrete aggregates. This investigation shows that the structural behavior of all three types of commercially available shrinkage compensating cements is essentially the same. The degree of compensation is largely dependent upon the restraint within and adjoining the slab. The initial test results indicate that the cements used in this study did not provide enough expansion to give complete compensation for all percentages of reinforcement. However, complete compensation was achieved for lightly reinforced slabs. Criteria that the structural designer can use to relate the degree of shrinkage compensation to the expansive potential of the concrete are presented.

  • Supplemental Notes:
    • Presented at the Klein Symposium on Expansive Cement Concretes, SP-38, American Concrete Institute, Detroit, Mich., 1973.
  • Corporate Authors:

    Portland Cement Association

    5420 Old Orchard Road
    Skokie, IL  United States  60077
  • Authors:
    • Russell, H G
  • Publication Date: 1975

Media Info

  • Features: Figures; Tables;
  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00129040
  • Record Type: Publication
  • Report/Paper Numbers: RD034.01D
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM