EXPANSIVE (SELF-STRESSING) CEMENTS: IN REINFORCED CONCRETE

The objectives of this investigation were to gain a better understanding of the behaviour of self-stressing reinforced concrete structures and to determine the economic savings possible with the effective use of expansive cement under practical construction conditions. This report is primarily concerned with the first of the above objectives although potential economic savings in beams is briefly discussed. This report describes the evaluation of expansive cements by means of free expansion of mortar bars, effects of longitudinal as well as lateral restraints on self-stress development and mechanical properties, effects of eccentrical restraints, and effects of different curing conditions. It also describes the structural behavior of self-stressed concrete members and the determination of economic savings possible with the effective use of expansive cement under practical construction conditions. The expansive cement evaluated was a blend of portland cement, calcium aluminate cement, and gypsum. The calcium aluminate cement contents were varied from 10 to 25 percent and the gypsum contents were in the range of 10 to 20 percent. Two expansive cements, giving a medium and a high amount of expansion were selected for the remainder of the investigation. /Author/

• Supplemental Notes:
  • Sponsored by Indiana State Highway Commission and prepared in cooperation with DOT, Federal Highway Administration.
• Corporate Authors:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University, School of Civil Engineering
  West Lafayette, IN  United States  47907-1284
• Authors:
  • Gowda, H
• Publication Date: 1976-8

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 101 p.

Subject/Index Terms

• TRT Terms: Calcium; Concrete construction; Concrete curing; Costs; Expansive cement; Gypsum; Mechanical properties; Mortar; Portland cement; Reinforced concrete; Stresses
• Uncontrolled Terms: Stressing
• Subject Areas: Finance; Highways; Materials;

Filing Info

• Accession Number: 00165553
• Record Type: Publication
• Report/Paper Numbers: JHRP-76-24 Intrm Rpt.
• Contract Numbers: HPR-1(14) Part II
• Files: NTIS, TRIS, ATRI
• Created Date: Jan 30 1978 12:00AM