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Entrained air – BS 8500 requirements
For freeze-thaw resisting concrete, the minimum specified entrained air content depends on the maximum aggregate size and is shown below. The allowable test result range is also given.
| Min. specified air content % |
Max. allowable deviation on range limit % |
|
| Max. aggregate size (mm) |
XF1 to XF4, PAV1, PAV2 | |
| 40 | 4.0 | -0.5, +5.0 |
| 20 | 4.5 | -0.5, +5.0 |
| 14 | 5.5 | -0.5, +5.0 |
| 10 | 6.5 | -0.5, +5.0 |
Air content is tested in accordance with BS EN 12350-7
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