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What should one do if the slump test fails for a given concrete?

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Asked: July 24, 20202020-07-24T19:53:34-07:00 2020-07-24T19:53:34-07:00In: Construction Site Related
CB Sowmya
CB Sowmya

CB Sowmya

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What should one do if the slump test fails for a given concrete?

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  1. Himanshu joshi

    Himanshu joshi

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    Himanshu joshi Learner
    2020-07-25T19:56:57-07:00Added an answer on July 25, 2020 at 7:56 pm

    If slump results from test show shear or collapsible slump, then it should be rejected, and the test should be repeated.
    Now, if at site RMC is used and slump results are not satisfactory, then we can manage the water-cement ratio by adding more cement content, which will increase strength.
    Also, we can use admixtures such as plasticizers or superplasticizer to maintain workability of concrete.

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  2. Vivek Patel

    Vivek Patel

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    Vivek Patel User
    2020-07-27T14:58:01-07:00Added an answer on July 27, 2020 at 2:58 pm

    If the slump test fails, then we should reject that concrete.

    Because slump test gives an idea about workability and water-cement ratio

    If the water-cement ratio is high, then the workability of concrete is increased. Still, the durability of concrete is decreased due to excessive water, which forms voids in the concrete and reduce the strength of the concrete.

    Generally slump value is wearing from 25mm to 175 mm it depends on how much workability we required

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  3. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru
    2020-12-18T15:44:22-08:00Added an answer on December 18, 2020 at 3:44 pm

    If the slump test fails for concrete then immediately reject that concrete because high amount of water can decrease the durability of the concrete. But dont add water if the slump test fails.

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