Concretes were made containing six bags of cement per cubic yard, five retarding admixtures plus control, and at slumps of two or six inches. The admixtures were a lignosulfonate, a hydroxyacid, and a carbohydrate proprietary materials and glycolic acid and sucrose. The hardened concretes were dried at 73 F and 50 percent relative humidity. Shrinkage was determined at times from 7 days to 6 months. There were no sytematic differences in the maxium shrinkage values except that those for concrete containing the hydroxyacid retarder were slightly lower than the others. The shrinkage-log time data seem, in most cases, to be reasonably well represented by two straight lines breaking at the 28-day value. It is concluded that the influence of these retarders on shrinkage of concrete is not significant to engineering considerations.

  • Supplemental Notes:
    • Research Sponsored by Indiana State Highway Commission in cooperation with FHWA.
  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284
  • Authors:
    • Dolch, W L
    • Scholer, C F
  • Publication Date: 1974-8

Media Info

  • Pagination: 14 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00083591
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Intrm Rpt.
  • Contract Numbers: 1(10) Part II
  • Files: TRIS, USDOT
  • Created Date: Apr 8 1975 12:00AM