Table 7.
The comparisons of the impact number for high-early-strength cement between high-temperature dispersed and unprocessed carbon fibers (24 mm).
| Carbon Fiber | Impact Energy (J) | 73.6 | 58.9 | 41.7 | 29.4 | |
|---|---|---|---|---|---|---|
| Unprocessed(Benchmark) | Impact number | 4 | 13 | 21 | 71 | |
| 4 | 12 | 21 | 64 | |||
| 4 | 11 | 19 | 59 | |||
| 3 | 10 | 17 | 57 | |||
| 3 | 7 | 16 | 49 | |||
| Average | 3.8 | 10.6 | 18.8 | 60 | ||
| High- temperature heating (Remove Silane) | Impact number | 32 | 70 | 154 | 255 | |
| 19 | 53 | 170 | 285 | |||
| 37 | 72 | 140 | 298 | |||
| 25 | 59 | 151 | 262 | |||
| 45 | 65 | 172 | 289 | |||
| Average | 31.6 | 63.8 | 157 | 278 | ||
| Impact number increase (%) | 732 | 502 | 735 | 363 | ||