In the Standard Consistency test described in §1.10, the percentage of water 'P' is defined as the water required so that a Vicat plunger penetrates the paste to a depth of:
A{'text': '10 to 15 mm from the top', 'label': 'A'}
B{'text': '33 to 35 mm from the top', 'label': 'B'}
C{'text': '20 to 25 mm from the top', 'label': 'C'}
D{'text': '50 to 55 mm from the top', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': '33 to 35 mm from the top', 'label': 'B'}
1. §1.10(ii) Standard Consistency Test: 'The particular percentage of water which allows plunger to penetrate only to a depth of 33-35 mm from top is known as percentage of water required to produce a cement paste of standard consistency. This percentage of water is usually denoted as P.'
2. The Initial Setting Time test then uses 0.85P water with a 500 g sample.
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, §1.10(ii), p. 16_
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