TROUBLESHOOTING RETARDED CONCRETE: UNDERSTANDING THE ROLE OF CEMENT AND ADMIXTURES THROUGH AN INTERDISCIPLINARY APPROACH

A multidisciplinary approach is described that was used to determine the cause of a severe and erratic retardation problem involving random loads of ready mixed concrete having extended set times of up to 40 h. The details of the study are described and the results are discussed. The extensive chemical, microscopic, and physical analyses and mortar performance tests indicated that the erratic retardation problem was most probably due to lot-to-lot differences in the set time performance of the cement. Factors that account for the varying degree of retardation caused by levels of zinc are also discussed. These and other study findings are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Jeknavorian, A A
  • Hayden, T D
• Publication Date: 1991

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 103-108
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 13
  • Issue Number: 2
  • Publisher: American Society for Testing and Materials (ASTM)
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Admixtures; Cement; Performance; Testing
• Old TRIS Terms: Retarding
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00618288
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 31 1992 12:00AM