Answer / ravisobhan

7 days strngth is at 2/3rds of 28days stength. this is
required to check the concrete strength gaining in view of
removing formwork and to take preautionary measures incase
of failures before deshuttering.

Answer / roby

For cement concrete the setting time is a dependent out put depending on type of cement..type & max dia of aggregates,admixtures..environmental conditions and al..inspite of all this IS:456-1984 suggest tat about 66.7%....but still it has to be performed in lab nd checked.......

Answer / balaji

compressive strength of 28 days cube is more than the 7
days cube

how to estimate material requirement for an area of house in square feet?

0 Answers  

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What is the strength of 150x150mm cube compared to 300x300mm concrete cube?? Why?

4 Answers   JP Group,

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Stander Size of Brick

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I want to calculate the footing 90º L bend as a techincaly

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what is 43 & 53 in cement

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calculate the quantity of water for 1:6 cement mortar

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Why do we not deduct steel volume to find actual volume of concrete in practical as we have studied that,,, actual volume of concrete = volume of column- volume of steel pls explain with reference of IS code?????

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What is the Steel bar spacing formula for Concrete Slab?

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