Tap TRUE or FALSE for each concrete-technology statement.

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The standard concrete cube is cast in a 150 × 150 × 150 mm steel mould.

2. Statement is true

   No

   Statement

   Cylinder strength is generally higher than cube strength of the same concrete.

3. Statement is true

   Yes

   Statement

   Each layer of cube concrete is tamped with a 16 mm bullet-pointed bar at least 35 times.

4. Statement is true

   No

   Statement

   The standard cube compression loading rate is 50 N/mm² per minute.

5. Statement is true

   Yes

   Statement

   For nominal aggregate ≤ 20 mm, a 100 × 100 × 100 mm cube mould may be used.

Explanation