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Discussion

An ASTM Type I cement corresponds broadly to

  • A.low heat cement for mass concrete work
  • B.rapid hardening cement for early strength
  • C.ordinary Portland cement for general use
  • D.sulphate resisting cement for aggressive ground

Answer: C

Types II, III, IV and V cover moderate sulphate resistance, high early strength, low heat and high sulphate resistance respectively. The numbering is worth learning as a set. Indian standards use different designations for broadly similar products.

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