American Society of Civil Engineers

Experimental Study of Strengthening for Increased Shear Bearing Capacity

by Anders Carolin, (Luleå Univ. of Technol., Luleå, Sweden) and Björn Täljsten, (Prof., Skanska Teknik AB, SOlna, and Luleå Univ. of Technol., Luleå, Sweden)

Journal of Composites for Construction, Vol. 9, No. 6, November/December 2005, pp. 488-496, (doi:

     Access full text
     Purchase Subscription
     Permissions for Reuse  

Document type: Journal Paper
Abstract: The need for structural rehabilitation of concrete structures all over the world is well known, and a great amount of research is going on in this field. The use of carbon fiber-reinforced polymer (CFRP) plate bonding has been shown to be a competitive method with regard to both structural performance and economic factors. This method consists of bonding a thin carbon-fiber laminate or sheet to the surface of the structure to act as an outer reinforcement layer. However, most research in this area has been undertaken to study flexural behavior. This paper deals with shear strengthening of reinforced concrete members by use of CFRP. Tests on rectangular beams 3.5 to 4.5 m long have been undertaken to study different parameters, such as fatigue, anchorage, and others. The strain field in shear spans of beams simultaneously subjected to shear and bending is also studied. The tests presented also contribute to the existing literature on tests of concrete members strengthened for increased shear capacity.

ASCE Subject Headings:
Concrete structures
Fiber reinforced polymer
Laboratory tests