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