Project on Concrete Mix Design for various grades of Concrete
concrete mix design for M35 grade of concrete.
opc 45 grade of concrete by is 2112
aggrigate - 20 mm
cement - 320 kg/m3
water cement ratio - .454
workable concrete - 100 mm
exposure condition - severe
material
aggrigate - angular
chemical - 450
chemical admixture - super plasticizer
specific aggrigate - 3.15
A. SPECIFIC AGGRIGATE
coarse aggigate - 2.74
fine aggrigate - 2.74
B. WATER ABSORBTION
coarse aggrigate - .5
fine aggrigate - 1.0 %
C. SIEVE ANALYSIS
coarse an fine aggrigate - confirming grading zone
D. TARGET MEAN STRENGTH FOR MIX PROPOTION
f'ck = fck +1.65s
target mean stregth = 4+1.65*5
= 48.25 n/m2
E. WATER:CEMENT
0.45<0.45 PK
F. SELECTING OF WATER CONTENT
20MM = 186 LITR
for 100mm slump = 186 + 6/100*186
= 197 litr
= 197*.71 = 140 litr
G. CALCULATION FOR CEMENT CONTENT
WATER:CEMENT= 0.4
cement content = 140/.4
= 350 kg/m3
CALCULATION FOR VOLUME
VOLUme of cement = (350/3.15)/1/1000
= 0.111 m3
volume of water = (1.40 / 1) * 1/1000
volume of chemical admixture = (7.6/1.145) *1/1000
0.606 m3
mass of ca = e* vo of ca 3p ca * 1000
= 0.743*.56*2.74*1000
= 1140 kg/m3
mass of fine aggrigate = .0743*.44*2.74*1000
= 8.96 kg/m3
MIX PROPOTION FOR M35 GRADE OF CONCRETE
CEMENT = 350 KG/M3
WATER = 140 KG/M3
FINE AGGRIGATE = 896 KG/M3
COARSE AGGRIGATE = 1140 KG/M3
CHEMICAL ADMIXTURE = 7
WATER : CEMENT = .4