Under the ASTM classification, the Type used when 'high sulphate resistance is required' is:
A{'text': 'Type I', 'label': 'A'}
B{'text': 'Type V', 'label': 'B'}
C{'text': 'Type III', 'label': 'C'}
D{'text': 'Type II', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Type V', 'label': 'B'}
1. §1.7(B) names Type V as 'For use when high sulphate resistance is required (Sulphate resisting Cement).'
2. Type II is for moderate (not high) sulphate exposure.
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, §1.7(B), Type V, p. 11_
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