Write four objectives of concrete mix design.

Write four objectives of concrete mix design. 
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Answer :

i. To achieve a specified compressive strength of concrete. ii. To reduce wastage of concrete by correct proportioning. iii. To achieve economy by selecting appropriate concrete ingredients. iv. To maintain workability of concrete mix throughout work. v. To obtain maximum possible yield per bag of cement. vi. To ensure less defects and enhanced durability of concrete.
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