Red Seal Concrete Finisher Practice Exam

The term 'slump' in concrete work specifically refers to the measure of the consistency or workability of fresh concrete. It is determined using a slump cone test, where a cone-shaped mold is filled with freshly mixed concrete. After the mold is removed, the amount by which the concrete settles or 'slumps' is measured. A higher slump indicates a more workable mix, which can be beneficial for applications requiring easier placement and finishing. Conversely, a lower slump signifies a stiffer mixture, which may be desirable for certain structural applications. Understanding slump is essential for ensuring that the concrete meets the necessary performance requirements for its intended use, making it a key factor in concrete work.

Other choices, while related to aspects of concrete, do not correctly define slump. The size of the concrete mix, the amount of air in the mix, and the drying time all pertain to different properties or characteristics of concrete, but do not capture the essence of what 'slump' is within the context of workability.