slump

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Slump is the measure of a [[concrete]] mixture's workability and consistency. Generally, a higher slump concrete will have a higher [[WaterCementRatio water/cement ratio]], although higher slumps may be achieved through the addition of [[superplasticizer superplasticizers]] in Type F or G [[ConcreteAdmixtures admixtures]].

__**The Slump Test**__
Before pouring any batch of concrete, it should be tested by filling an inverted cone (commonly called an Abrams cone) with concrete, lifting the cone, and measuring the change in height the concrete falls. Low slump mixtures fall just several inches. If the mixtures falls more than half way (aprox. 6") it is generally considered a High slump mixture.

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