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The concrete mix design refers to a technique for choosing suitable ingredients of concrete as well as establishing their balanced values so as to produce a concrete of the optimal strength, elasticity and feasibility as economically as possible.
The following properties are required to extend basis of choosing and proportioning of mix ingredients:
- The smallest amount of compressive strength is obligatory from structural consideration
- The adequate workability is considered necessary for complete compaction through the obtainable compacting equipment.
- Extreme water-cement ratio and supreme cement content to offer ample force for the specific site conditions
- Highest cement content to steer clear of shrinkage cracking due to temperature cycle in mass
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