Project on Concrete Mix Design for various grades of Concrete

M50 MIX DESIGN

STEP 1. TARGET MEAN STRENGTH

FCK= 58.25 n/mm2

step 2. selection of w/ c ratio

0.40

step 3 selection of water content 140 litre

step 4 calculate cement content

320 kg/m3

step 5 volume of C.A AND F.A.

C.A.= 0.56

F.A. = 0.44

STEP 6 MIX DESIGN

vol. of conctere= 1m3

vol. of cement= 0.126m3

vol. of water = o.140m3

vol. of chemical admixuture= 0.007m3

vol. of F.A.= 1069

vol. of C.A.= 1240

trial mix ratio= 1: 2.74: 3.1

M 35 MIX DESIGH WITH FLY ASH

STEP 1. TARGET MEAN STRENGTH

FCK= 43.25 n/mm2

step 2. selection of w/ c ratio

0.45

step 3 selection of water content 140 litre

step 4 calculate cement content

cementenious material = 350*1.10= 385 kg/m3

water content= 140 kg/m3

w/c ratio= 0.364

fly aash = 30%= 385/0.30= 115kg/m3

cement= 270 kg /m3

fly ash = 115 kg/m3

step 5 volume of C.A AND F.A.

C.A.= 0.56

F.A. = 0.44

STEP 6 MIX DESIGN

vol. of conctere= 1m3

vol. of cement= 0.126m3

vol. of water = o.140m3

vol. of chemical admixuture= 0.007m3

vol. of F.A.= 863 kg/m3

vol. of C.A.= 1098 kg/m3

trial mix ratio= 1:2.24:2.85