Analysis of Slant Shear Bond Strength of Repair Materials Using Experimental and Finite Element Methods

Good bond strength between a repair material and substrate concrete is vital for the adequate performance of a repaired section. The slant shear test method (ASTM C 882 standard) is widely employed to determine the bond strength of a repair material, wherein a composite cylinder prepared with repair material and substrate mortar is tested. The failure of the composite cylinder on the slant surface is considered to reflect the true bond strength. In this investigation, bond strength and the failure mode of eight different repair materials were studied along with their compressive strength and split tensile strength. From these results, it was observed that the failures of the composite cylinders did not occur on the slant surface, for all the repair materials. This study analyzed the potential reasons behind the different failure patterns in the composite test specimens using experimental and finite element methods. Through this analysis it was observed that the bond strength and the mode of failure depended on the mechanical properties of repair material relative to the properties of substrate mortar. Other factors influencing the bond strength and the mode of failure were surface texture of the substrate mortar and the type of curing employed on the composite sections.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Pattnaik, Rashmi Ranjan
  • Rangaraju, Prasada Rao
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 23p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Compressive strength; Concrete; Curing agents; Failure; Failure analysis; Finite element method; Mechanical properties; Mortar; Repairing; Surface texture tests
• Uncontrolled Terms: Repair materials; Substrates
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01045162
• Record Type: Publication
• Report/Paper Numbers: 07-3171
• Files: TRIS, TRB
• Created Date: Mar 30 2007 7:01AM