The experimental study aims to investigate uniaxial behavior of ultra-high-performance fiber-reinforced composite (UHPFRCC) columns with compressive strengths of 180, 150, and 120 MPa. Eleven square columns and six circular columns will be constructed and tested with uniaxial load. Main variables were the amount and spacing of transverse reinforcement, and concrete compressive strength. The amount and spacing of transverse reinforcement were chosen based on the seismic design provisions of ACI Code (ACI 318-14) and CSA Standard (CSA 2014).

In the actual research fields, the studies for applications of 180 MPa ultra-high-performance fiber reinforced composite (UHFRCC) to compressive members are limited due to its very high compressive strength. In this study, in order to find basic research data for the design specification of UHPFRCC compressive members, a series of draft experiments, including short columns with square and circular sections, were performed and its failure modes and behaviors were assessed.