Skip to main content

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.
are-review.blogspot.com

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

Comments

Try These Too!

Structural forces

Choose a term that best identifies the type of force shown in this diagram - A. collinear B. concurrent C. nonconcurrent D. noncoplanar

Roof pitch

Which one of the following slopes in this illustration corresponds with an 8:12 pitch roof? A. 45° B. 36.87° C. 33.69° D. 26.57°

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred