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Add water or superplasticizer
- If the slump value is too low, add water or superplasticizer in regulated quantities to make the concrete more workable and bring it within the required slump range. After that, position the concrete in its final location. Water added to the concrete mix should not exceed the maximum permissible limit specified in the specifications.
www.buildersbooklet.com/concrete/failed-slump-test/What to do if Concrete Failed Slump Test? – Builders Booklet
What Should Engineer Do If On-site Slump Test Fails? Generally, slump value ranges from 25 mm to 175 mm and depends on how much workability is required. Start slump test 5 minutes after the production of fresh concrete sample. Prepare the strength specimens 15 minutes after the production of new concrete batch.
- Slump Flow Test on Self Compacting Concrete for Workability
The test method is based on the test method for determining...
- Slump Test
Concrete slump test is carried out from batch to batch to...
- Slump Flow Test on Self Compacting Concrete for Workability
Engineers should make a proper decision when an on-site slump test fails. The decision could be an outright rejection of the complete batch of concrete or the suspension of the work due to the contractor's failure to follow project requirements.
Here, we are going to spot some light on the answer. When an on-site slump test fails, engineers must make an appropriate conclusion. The choice may be to reject the whole batch of concrete outright or to suspend construction due to the contractor’s inability to adhere to project specifications.
If the concrete sample in a completed slump test has an unexpected response or appearance, the default action should be to discard it and rerun the test right away with a fresh replacement sample. The slump test is simple and fast, so a quick re-test should be the norm whenever there is doubt.
Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. The slump test is the most simple workability test for concrete, involves low cost and provides immediate results.
Aug 3, 2020 · A Slump test or Concrete slump test is to determine the workability or consistency of the concrete mixture prepared in the laboratory or at the construction site during the progress of work. The concrete slump cone test is used for the measurement of a property of fresh concrete.
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What should I do if a concrete sample fails a slump test?
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What should engineers do if an on-site slump test fails?
The basic items you’ll need to perform the test include a slump cone, a baseplate to rest the cone on during the test, a steel rod to tamp down the concrete, and a tape measure or ruler to measure the slump of the concrete after the cone is removed.
