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Q: Which property of concrete is considered while doing the mix design for pavement concrete?
  • A. Characteristic compressive strength
  • B. Shear strength
  • C. Bond strength
  • D. Flexural strength
Correct Answer: Option D - Design strength of concrete :- For flexural strength of pavement, concrete should not be less than 40 kg/cm². This strength value, however, should not be confused with mix design strength. The mix has to be so designed as to ensure the minimum structural strength requirements in the field, with the desired confidence level.
D. Design strength of concrete :- For flexural strength of pavement, concrete should not be less than 40 kg/cm². This strength value, however, should not be confused with mix design strength. The mix has to be so designed as to ensure the minimum structural strength requirements in the field, with the desired confidence level.

Explanations:

Design strength of concrete :- For flexural strength of pavement, concrete should not be less than 40 kg/cm². This strength value, however, should not be confused with mix design strength. The mix has to be so designed as to ensure the minimum structural strength requirements in the field, with the desired confidence level.