Research Article
Reduction of Postfire Properties of High-Strength Concrete
Table 3
Residual properties of concrete specimens after cooling to ambient temperature (0 h)—(a).
| Property | Temperature level (°C) | 20 | 230 | 400 | 500 | 600 |
| (MPa) | 57.6 | | 63.1 | | 51.9 | | 38.6 | | 25.4 | | 65.7 | Mean 63.6 | 57.6 | Mean 60.4 | 49.9 | Mean 51.6 | 38.1 | Mean 39.1 | 27.9 | Mean 26.3 | 67.6 | | 60.6 | | 53.0 | | 40.6 | | 25.5 | |
| (MPa) | 37694 | | 30365 | | 18244 | | 13430 | | 10078 | | 37098 | Mean 38159 | 26214 | Mean 28463 | 16876 | Mean 17570 | 11508 | Mean 12624 | 11377 | Mean 10289 | 39684 | | 28809 | | 17589 | | 12932 | | 9413 | |
| (MPa) | 41056 | | 33925 | | 18055 | | 13173 | | 12259 | | 45484 | Mean 44127 | 29166 | Mean 32258 | 16255 | Mean 16955 | 11232 | Mean 12332 | 13295 | Mean 12599 | 45842 | | 33681 | | 16555 | | 12592 | | 12244 | |
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