Research Article
Axial Compression Behavior of Rubberized Concrete-Filled Square Steel Tubular Columns after Exposed to High Temperatures
Table 3
Details of specimens and experiment results.
| | Specimen | r (%) | T (°C) | t (min) | fcu (MPa) | Nu (kN) |
| | R10T20 | 0 | 20 | — | 38.2 | 741.3 | | R10T200t180 | 10 | 200 | 180 | 34.6 | 647.6 | | R10T400t180 | 10 | 400 | 180 | 27.8 | 518.3 | | R10T600t180 | 10 | 600 | 180 | 19.1 | 492.1 | | R10T800t180 | 10 | 800 | 180 | 8.1 | 424.7 | | R0T600t180 | 0 | 600 | 180 | 27.3 | 643.9 | | R5T600t180 | 5 | 600 | 180 | 21.9 | 549.4 | | R20T600t180 | 20 | 600 | 180 | 15.4 | 485.4 | | R10T600t30 | 10 | 600 | 30 | 34.9 | 577.2 | | R10T600t90 | 10 | 600 | 90 | 26.6 | 518.3 |
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