Question
Download Solution PDFAs per IS 10262 : 2019, what is the approximate amount of entrapped air to be expected in normal (non-air-entrained) concrete when 10 mm nominal maximum size of aggregate is used in making concrete?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The approximate amount of entrapped air to be expected in normal (non-air-entrained) concrete is given by the table 3 of IS 10262:2019
| Sl. No. | Nominal Maximum Size of Aggregate (mm) | Entrapped Air, as Percentage of Volume of Concrete |
| 1 | 10 | 1.5 |
| 2 | 20 | 1.0 |
| 3 | 40 | 0.8 |
Additional InformationThe table given below is used when only angular-shaped aggregates are used in concrete as well as the slump should be 25 to 50 mm.
| Sl. No. | Nominal Maximum Size of Aggregate (mm) | Maximum Water content (litre) |
| 1 | 10 | 208 |
| 2 | 20 | 186 |
| 3 | 40 | 165 |
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