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Q: Concrete containing
  • A. silicious aggregates, has higher co-efficient of expansion
  • B. igneous aggregates, has intermediate co-efficient of expansion
  • C. lime stones has lowest co-efficient of expansion
  • D. All option are correct
Correct Answer: Option D - Concrete is a matrix. In which the main components are cement, coarse aggregate, fine aggregate and water. As per the coeff. of expansion is concerned, there are several aggregates which have different types of the coeff. of expansion. Silicious aggregates have the higher coeff. of expansion, igneous aggregates have the medium coeff of expansion. While lime stone have the very low coeff. of expansion.
D. Concrete is a matrix. In which the main components are cement, coarse aggregate, fine aggregate and water. As per the coeff. of expansion is concerned, there are several aggregates which have different types of the coeff. of expansion. Silicious aggregates have the higher coeff. of expansion, igneous aggregates have the medium coeff of expansion. While lime stone have the very low coeff. of expansion.

Explanations:

Concrete is a matrix. In which the main components are cement, coarse aggregate, fine aggregate and water. As per the coeff. of expansion is concerned, there are several aggregates which have different types of the coeff. of expansion. Silicious aggregates have the higher coeff. of expansion, igneous aggregates have the medium coeff of expansion. While lime stone have the very low coeff. of expansion.