Consolidation of concrete should proceed
a) Before Mixing
b) Before Placing
c) Immediately after mixing
d) Immediately after placing
Answers
Answer:
Answer:correct answer is (C)
Immediately after mixing
Consolidation of concrete should proceed (c) Immediately after mixing
Explanation:
1.Consolidation, or compaction, is the process of removing entrapped air from freshly placed concrete. By consolidating the concrete, the entrapped air is driven out and the concrete's permeability is decreased.
2.Consolidation is essential because freshly mixed concrete generally has the entrapped air in it which is become a reason for honeycombing in concrete.
3.If there if do not apply consolidation then the concrete will become non-uniform, weak, porous, and poorly bonded to the reinforcement.
4.Concrete consolidation methods include internal vibration, external vibration, and surface vibration which can be achieved by using various types of mechanically operated equipment. Internal vibrators are the most commonly used.