THE RING METHOD OF MEASURING RESTRAINED SHRINKAGE IN MORTAR AND CONCRETE

This paper describes an improved steel-ring test method for determining tensile stresses induced by the restrained shrinkage of either mortar or concrete. The method permits measurement of shrinkage stresses at ages as early as five hours after casting. The specimens used were 102-mm (4-in.) thick rings with an outer diameter of 660 mm (26 in.). Graphic data are presented to validate the efficacy of the method. Restrained shrinkage measurements are given for plain mortar, mortar incorporating alkali-resistant glass fibers, and plain concrete (both normal weight, incorporating gravel aggregate, and lightweight, incorporating expanded slate aggregate). Also shown are the effects of heat of hydration associated with special hydraulic cements (aluminous and ultrafine Type I portland). (Author)

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

  American Society for Testing and Materials

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Swamy, R N
  • Bandyopadhyay, A K
  • Stavrides, H
• Publication Date: 1979

Media Info

• Features: Figures; References;
• Pagination: p. 13-20
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 1
  • Issue Number: 1
  • Publisher: American Society for Testing and Materials
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Concrete; Fiber reinforced concrete; Fiberglass; Measurement; Mortar; Shrinkage; Tension
• Uncontrolled Terms: Ring test; Tensile stress
• Old TRIS Terms: Concrete shrinkage
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00314666
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 18 1981 12:00AM