Slump test is a test conducted before the concrete to be used for casting. The purposed of slump test is to determined the water content in concrete (whether it is too dry or too wet for concreting) and its workability.
Normally it is done for every mixer truck arrived. But it can also be detected by the movement of the wet concrete when it is being poured out to the bucket (when you familiar with it).
A slump can be collapse, or shear, when it is failed. A failed slump will need to be re-batching at the batching plant.
Equipment for slump test
- Base plate
- Trowel to mix concrete mixture
- Steel tamping rod
- Slump cone
- Ruler
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| Aparatus of Slump test |
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| Wet concrete are divided into 3 layers(common standard)or 4 layers(MS standard) |
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| Each layer will be compacted with compacting rod as much as 25 times |
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| Frustum is lifted up slowly |
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| Frustum come is placed invertly beside slump and the degree od slump acquired from the reading of ruler or measuring tape. |
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