2 EXPERIMENTAL INVESTIGATIONS<br><br>In this study, the effect of confining pressure on compressive strength and ductility of the CFT column was investigated. The experimental study was carried out in five steps: specimen preparation, testing of compressive strength, determination of the mechanical properties, visual inspection and conclusion as shown in Figure 3. Altogether four series of CFT column specimen were produced and conducted to investigate the influence of preconfining pressure by varying the preconfining pressure from 0.0MPa, 2.4MPa, 4.8MPa, and 7.2MPa which were equivalent to 0.0%, 11.4%, 22.9% and 34.3% of the infill concrete strength, respectively.<br>The details of the specimen series are summarized and shown in Table 1. For each series, two identical CFT specimens were cast and experimentally investigated for its strength and ductility performance based on its compressive strength and axial stress-strain relation characteristics under uni-axial load test. The failure mode was also investigate by visual inspection from the failure shape and longitudinal cross-section of the specimen after uni-axial load test. The compressive strength, ductility factor ( ) and the energy absorption capacity were obtained by taking the average of these specimens.
正在翻譯中..
