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Per §5.4.6 (Vee-Bee Consistometer Test), the test is described as most suitable for assessing:
A{'text': 'The 28-day strength of hardened concrete', 'label': 'A'}
B{'text': 'Highly fluid self-compacting concretes only', 'label': 'B'}
C{'text': 'Mixes containing aggregate larger than 80 mm', 'label': 'C'}
D{'text': 'Differences in consistency of VERY DRY concrete mixes', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': 'Differences in consistency of VERY DRY concrete mixes', 'label': 'D'}
1. §5.4.6: 'This is probably one of the most suitable tests for determining differences between consistency of very dry mixes. This test is widely used in Europe. It is however only applicable to concretes with a maximum size of aggregate of less than 40 mm.'
2. The result is the 'Vee Bee Degree' — the time taken for the conical sample to assume a cylindrical shape under vibration.
_Source: IGNOU ET-522 Block-2 Unit-5 Workability & Fresh Concrete-I, §5.4.6, p. 13_
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