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Slump is a measure of the consistency of a concrete mix, or its ability to flow, and is often used to evaluate how much water has been used in the mix. Concrete with a slump that is low is very stiff, dry, and hard to work with. Concrete with a higher slump is more fluid and workable. Slump values are measured in the number of inches fresh ...
The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows. It can also be used as an indicator of an improperly mixed batch. The test is popular due to the simplicity of apparatus used and simple procedure ...
The slump test is the most simple workability test for concrete, involves low cost and provides immediate results. Due to this fact, it has been widely used for workability tests since 1922. The slump is carried out as per procedures mentioned in ASTM C143 in the United States, IS: 1199 – 1959 in India and EN 12350-2 in Europe .
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What is a concrete slump test?
The slump test holds a pivotal role in the construction industry, providing immediate and valuable feedback on the quality of freshly mixed concrete. Conducting this test helps ensure that the concrete mix possesses the desired properties for optimal performance in various structural applications.
The slump test is a hands-on procedure, and too many variations in technique affect its accuracy and repeatability. Not All Mixes Respond Well to the Slump Test: What you Need to Know. ASTM C143 and AASHTO T 119 are the standard test methods for the slump of hydraulic-cement concrete with a maximum aggregate size of 1-1/2in (37.5mm).
The Slump test concrete is carried out with the help of a conical cone open at both ends. The slump cone filled with concrete lifted up and the resulting height of concrete spread over the surface shows the degree of fluidity, workability, and consistency of the concrete mix. It also indicates the amount of water added is correct or not.
Feb 27, 2024 · The slump test should begin within five minutes of obtaining the composite sample, as this timeframe helps ensure the accuracy of testing results. The quantity of concrete required for a slump test is typically determined by specifications, for example, the ASTM C 94 specification for ready mixed concrete. Testing Procedure
