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Target mean strength of concrete for mix design
Target mean compressive strength from the characteristic strength and the standard deviation. Reference: IS 456:2000 Cl. 6, 9; mix design to IS 10262.
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# Data
f_ck := 30 MPa
s := 5 MPa
X := 6.5 MPa
# s is the assumed standard deviation and X the factor for the grade, as given in the mix design standard.
# Target mean strength
f_t1 := f_ck + 1.65*s =
f_t2 := f_ck + X =
f_target := max(f_t1, f_t2) =How to use this example
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