An experimental study on flexural behavior for a FRP composite girder

• We suggested a section of a new module that would apply a large section.
• We developed a new FRP composite girder that is filled with concrete.
• It was confirmed the composite effect from confining concrete.

This study suggested a section of a new module that would apply a large section in order to solve some technical difficulties and to compensate low stiffness of FRP, developed a new FRP composite girder that is filled with the appropriate amount of concrete. To identify the structural behavior of the FRP composite girder, experiments were performed to measure its flexural strength according to the difference in the strength of confined concrete and the existence of stud. It was confirmed the composite effect from confining concrete and the effect of an increase in stiffness proportional to the strength of concrete based on the test results of the flexural strength.