What happens to concrete if it is not consolidated properly?

When concrete is not consolidated properly, it may retain air pockets, which significantly affects its overall strength and durability. Proper consolidation removes entrapped air and ensures that the concrete mixture is dense, allowing it to fill all spaces in the formwork. Air pockets can lead to weaknesses in the material, as they create voids that compromise the structural integrity of the concrete. When air pockets are present, they can also cause other issues, such as reducing the bond strength between the concrete and any reinforcement used, leading to potential failure under load or stress.

In contrast, while it is possible for concrete to crack easily if it has air pockets or if it is improperly mixed, this is not the direct result of not consolidating the concrete. The consolidation process is essential for achieving optimal compaction and minimizing the potential for cracks caused by inadequate strength or structural issues. Thus, retaining air pockets is the most accurate consequence of improper consolidation.