Research on the Properties of the Concrete Filled Steel Tube Columns with CFRP Composite Materials
This paper presents a phase of the research program to determine the feasibility of a proposed CFRP retrofit method to strengthen the corroded concrete filled steel tube columns. This method is wrapping the corroded concrete filled steel tube column with CFRP material. Eight concrete filled steel tube columns were tested in the laboratory with four of them strengthened using the proposed technique. All specimens were notched in the center zone to simulate the loss of section due to corrosion the four of them were wrapped with CFRP composite tubes in the damage area. All specimens were axially loaded to failure while strain and displacement were measured to demonstrate the validity of this repair concept. This paper presents the experimental results and discusses the findings with preliminary conclusions on the feasibility of the proposed strengthening method.
W. Gu and H. N. Li, "Research on the Properties of the Concrete Filled Steel Tube Columns with CFRP Composite Materials", Advanced Materials Research, Vols. 163-167, pp. 3555-3559, 2011