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In mix design, what does the term 'target mean strength' refer to?

Practice Questions

Q1
In mix design, what does the term 'target mean strength' refer to?
  1. The average strength of all concrete samples
  2. The minimum strength required for structural safety
  3. The strength that the concrete should achieve at 28 days
  4. The strength of the weakest sample

Questions & Step-by-Step Solutions

In mix design, what does the term 'target mean strength' refer to?
  • Step 1: Understand that concrete is made to be strong and durable.
  • Step 2: Know that concrete strength is measured in terms of how much weight it can hold.
  • Step 3: Realize that concrete is tested for strength after it has cured for 28 days.
  • Step 4: Learn that 'target mean strength' is the specific strength that engineers want the concrete to reach after those 28 days.
  • Step 5: Remember that this target helps in designing the right mix of materials to ensure the concrete is strong enough.
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