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What should be the 28 days cube strength for M-25 grade
concrete?How it is connected with acceptance criteria of
fck+3 as per IS 456-2000 and why?
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Answer Posted / viki
the 28 days cube strength for M-25 grade
concrete should be 25N/mm2.
acceptance criteria are some conditions defined by IS 456
regarding characteristic strength of concrete when the mix
is prepared on site.strength tests are performed on 4
blocks of concrete.avg strength is calculated.
then fck+3 means that the avg strength of the concrete mix
at the site should be 3N/mm2 greater than fck of mix.
i.e. mean strength= (fck+3)N/mm2
(refer IS456 CLAUSE 16)
| Is This Answer Correct ? | 18 Yes | 7 No |
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