Project on Concrete Mix Design for various grades of Concrete
i. stipulations for proportioning
Grade: M35
Cement : OPC 43 grade conforming to IS 8112
Type of admixture : Fly asy conforming to IS 3812 part 1
Size of aggregate: 20mm
Minimum cement content : 340 kg/m^3( From table 5 IS 456 :2000)
Maxmum water cement ratio : 0.45
Workability : 100 mm ( slump value for pumpable concrete)
Exposure condition : Severe ( for rainforced concrete)
Method of concrete placing: pumping
Degree of supervion : good
Type of aggregate : Crushed anguler aggregate
Maxmum cement contain : 450 kg/M^3
chemical admixture type : Superplasticizer
ii Test date for materials:
Cement used :OPC 43 grade conformed to IS 8112
Specific gravity of cement : 3.15
Fly ash : Conformed to IS 3812 part 1
Specific gravity of fly ash : 2.2
chimecal admixture : superplasticizer conformed to IS 9103
Specific gravity of:
Coarse aggregate : 2.74
Fine aggregate : 2.74
Water absorption:-
Coarse aggregate : 0.5%
Fine aggregate : 1.0%
Free surface morture
Coarse aggregate : Nill
Fine aggregate : Nill
Sieve analysis:
Coarse aggregate
Fine aggregate : Conformied to grading Zone I table of 4 of IS 383
Target Strenght for mix proportioning:
f'ck= fck+1.65s
= 35+1.65*5 = 43.25N/MM^2
W/C =0.4
=186+6/100*186 =196 liters
Water content = 196*0.71 = 140 liters
cement + fly ash = 140/0.4 = 350 kg/ M^3