What is Niminal mix and Design Mix ? write difference
between them ?
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Answer / suneendra
nominal mixes are those proportioned by the volume of the main ingrediants ( cement:sand:coarse aggregate ) Design mix:- Disign mixes on the other hand are specified as a grade the producer of the concrete has to achieve usually in terms of compressive srength
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Answer / rajesh.d.v.s.p.
in nominal mix we didn't give any factor of safety.
but in design mix we give the factor of safety
there for design mix Fck= fck+t.s
s= stranded deviation
t = number of testing samples
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