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Q: Percentage of pozzolanic material containing clay upto 80% used for the manufacture of pozzolana cement is ..........
  • A. 30%
  • B. 40%
  • C. 50%
  • D. 60%
Correct Answer: Option A - Portland pozzolana cement (IS : 1489-1991) (Part 1 and 2) • It is manufacturing percentage of pozzolanic material containing clay up to 80% and pozolonic cement is used 30%. • A pozzolanic material is essentially a siliceous or aluminious material. • Used in marine work and mass concreting • Ultimate strength is more than OPC. • Low shrinkage on drying • Used in water tightness.
A. Portland pozzolana cement (IS : 1489-1991) (Part 1 and 2) • It is manufacturing percentage of pozzolanic material containing clay up to 80% and pozolonic cement is used 30%. • A pozzolanic material is essentially a siliceous or aluminious material. • Used in marine work and mass concreting • Ultimate strength is more than OPC. • Low shrinkage on drying • Used in water tightness.

Explanations:

Portland pozzolana cement (IS : 1489-1991) (Part 1 and 2) • It is manufacturing percentage of pozzolanic material containing clay up to 80% and pozolonic cement is used 30%. • A pozzolanic material is essentially a siliceous or aluminious material. • Used in marine work and mass concreting • Ultimate strength is more than OPC. • Low shrinkage on drying • Used in water tightness.