Surface imperfections

An appearance problem in which individual irregular cavities (often small rounded or hemispherical) are exposed when formwork is removed from a concrete pour is sometimes called: Choose 2
A. honeycombing, B. popouts, C. blowholes, D. dusting, E. flaking, F. crazing, G. bug holes


C. and G. Permeable forms reduce the occurrence of this type of surface imperfection. Large size cavities can affect the concrete's durability.
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Resource Tip: Read about all of the surface imperfections listed in this question by reading Avoiding Surface Imperfections in Concrete from Cement Concretes and Aggregates Australia