EXPERIMENTAL STUDY ON SELF-SENSING PROPERTIES OF CFRPBARS FOR CONCRETE STRUCTURES

This paper presents test results on the mechanical and self-sensing properties of CFRP bars and concrete beams reinforced with CFRP bars. The CFRP bars were produced in different diameters and with different surface treatments. Eighteen CFRP bar specimens in three series are tested for elastic modulus, ultimate tensile strength and electrical resistance change. Six concrete beams reinforced with CFRP bars under third-point loading were tested. The curves of electrical resistance change of CFRP bars in concrete beams versus load were presented. The test results show that CFRP bars can be used as reinforcement and monitor the concrete structures mechanical properties.