ABSTRACT

This paper presents a discussion on the results from a thermal experimental testing program, performed on full-scale fire-exposed Reinforced Concrete-Filled Steel Tubes (RCFST) and Reinforced Concrete (RC) short columns (outer diameter 457 mm and length 1600 mm). In the companion papers, full details about the test procedure, thermal field, load-displacement curves are provided. The experimental research work is relative to the results of five tests for thermal field measurements, with four specimens heated in a gas furnace in standard fire conditions (ISO 834), and one specimen heated in an electric furnace in non-standard conditions; all specimens were also subjected to axial compression tests. In this paper, the results of the standard thermal tests are discussed in detail and a numerical-experimental comparison is proposed.