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Asked: June 2, 2020In: Construction Site Related

What is the Percentage of Stone Dust that can be added along with Fine Aggregate in different Designs of Concrete (Say M-20)?

Ramesh Kumar
Ramesh Kumar

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What is the percentage of stone dust that can be added along with fine aggregate in different designs of concrete (Say M-20)? What is the difference between the concrete with and without dust? Does adding dust helps in increasing/decreasing strength?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    Added an answer on October 9, 2020 at 2:59 pm
    This answer was edited.

    Difference between concrete with and without dust: The compressive strength of concrete will increase after adding dust in it. Various research shows maximum compressive strength at 60% dust used in concrete. When we talk about workability then dust concrete has low workability as compared to no dusRead more

    Difference between concrete with and without dust:

    The compressive strength of concrete will increase after adding dust in it.

    Various research shows maximum compressive strength at 60% dust used in concrete.

    When we talk about workability then dust concrete has low workability as compared to no dust concrete.  


    I hope so you found my answer more helpful to you.

    Thank You.

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Asked: May 16, 2020In: Construction Site Related

Admixtures in concrete for to Delay Setting Times

Ramesh Kumar
Ramesh Kumar

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How to calculate admixture for transporting concrete for long distances to delay setting time in case of long-distance transportation in transit mixers?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    Added an answer on October 5, 2020 at 10:21 pm

    The admixture which we use in the concrete for delaying its setting time then such type of admixtures are called as retarders. Gypsum is a retarding agent which we add in the cement during its manufacturing process. Gypsum is work as a starting agent as well as it restricts soundness in the cement.Read more

    The admixture which we use in the concrete for delaying its setting time then such type of admixtures are called as retarders.

    Gypsum is a retarding agent which we add in the cement during its manufacturing process.

    Gypsum is work as a starting agent as well as it restricts soundness in the cement.

    Apart from gypsum of various admixtures already listed in some previous post.

    The chemical name of gypsum is calcium sulphate.


    Thank you.

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