Challenge

Project on Concrete Mix Design for various grades of Concrete

ANS 1 - STIPULATIONS FOR PROPORTIONING DATA FOR MATERIALS TARGET STRENGTH FOR MIX PROPORTIONING

M30 MIX DESIGN OF CONCRETE GRADE WITH FLY ASH
			1
				GRADE DESIGNATION		M30
				TYPE OF CEMENT		OPC53
	MAX. NOMINAL SIZE OF AGGREGATE	20MM
	MIN. CEMENT CONTENT	320 kg/m3
	MAXIMUM WATER-CEMENT RATIO	0.35
	WORKABILITY	120 mm slump
	EXPOSURE CONDITION	sever
	METHOD OF CONCRETE PLACING	pumping
	DEGREE OF SUPERVISION	GOOD
	TYPES OF AGGREGATE	ANGULAR AGGREGATES
	MAXIMUM CEMENT CONTENT	450 kg/m3
	CHEMICAL ADMIXTURE TYPE	SUPERPLATICIZER9
2
	CEMENT USED	OPC 53 grade conforming to IS 8112
	SPECIFIC GRAVITY OF CEMENT	3.15
	CHEMICAL ADMIXTURE	SUPERPLASTICIZER CONFIRMING TO IS 9103
	SPECIFIC GRAVITY OF :
	1) COARSE AGGREGATES	2.74
	2) FINE AGGREGATES	2.74
	WATER ABSORPTION
	1) COARSE AGGREGATES	0.50%
	2) FINE AGGREGATES	1%
	FREE SURFACE MOISTURE
	1) COARSE AGGREGATES	NIL
	2) FINE AGGREGATES	NIL
	SIEVE ANALYSIS
	1) COARSE AGGREGATES	ZONE II
	2) FINE AGGREGATES	ZONE I
3
	f'ck =fck + 1.65 s	f'ck = target average compressive strength at 28 days, fck = characteristic compressive strength at 28 days, and s = standard deviation.
			FROM TABLE 1 , STANDARD DEVIATION		S= 5 N/mm2
			TARGET STRENGTH FOR MIX PROPORTIONING		30 +1.65 x 5

fck	30
s	5
fck' = fck + 1.65 x S (N/mm2)	38.25
W/C	0.38
C. AGGREGATES SIZE in mm	20
WATR CONTENT (Liters)	186
total water content in liters	202.74
0.23% REDUCTION OF WATER	156.1098
CEMENT CONTENT kg/m3	410.82
VOLUME OF CEMENTITIOUS MATERIAL INCLUDING FLY ASH kg/m3	451.90
NEW W/C RATIO	0.35
FLYASH @30%	135.57
CEMENT (OPC)	316.33
VOLUME OF COARSSE AGG. AS PER TABLE 3	0.612
VOLUME OF COARSE AGGREGATE	0.551
VOLUME OF FINE AGGREGATE	0.449
VOULME OF CONCRETE IN m3	1
VOL.OF CEMENT IN m3	0.100
VOL.OF WATER IN m3	0.156
VOL. OF FLY ASH in m3	0.062
VOL. OF CHEMICAL ADMIXTURES m3	0.0036
VOL. OF ALL AGGREGATES	0.678
MASS OF COARSE AGGREGATE KG	1023.599
MASS OF FINE AGGREGATE KG	834.787

STIPULATIONS FOR PROPORTIONING DATA FOR MATERIALS TARGET STRENGTH FOR MIX PROPORTIONING

M50 MIX DESIGN OF CONCRETE GRADE
			1	STIPULATIONS FOR PROPORTIONING
				GRADE DESIGNATION	M50
				TYPE OF CEMENT	OPC53
	MAX. NOMINAL SIZE OF AGGREGATE	20MM
	MIN. CEMENT CONTENT	320 kg/m3
	MAXIMUM WATER-CEMENT RATIO	0.34
	WORKABILITY	100 mm slump
	EXPOSURE CONDITION	sever
	METHOD OF CONCRETE PLACING	pumping
	DEGREE OF SUPERVISION	GOOD
	TYPES OF AGGREGATE	ANGULAR AGGREGATES
	MAXIMUM CEMENT CONTENT	450 kg/m3
	CHEMICAL ADMIXTURE TYPE	SUPERPLATICIZER9
2	TEST DATA FOR MATERIALS
	CEMENT USED	OPC 53 grade conforming to IS 8112
	SPECIFIC GRAVITY OF CEMENT	3.15
	CHEMICAL ADMIXTURE	SUPERPLASTICIZER CONFIRMING TO IS 9103
	SPECIFIC GRAVITY OF :
	1) COARSE AGGREGATES	2.74
	2) FINE AGGREGATES	2.74
	WATER ABSORPTION
	1) COARSE AGGREGATES	0.50%
	2) FINE AGGREGATES	1%
	FREE SURFACE MOISTURE
	1) COARSE AGGREGATES	NIL
	2) FINE AGGREGATES	NIL
	SIEVE ANALYSIS
	1) COARSE AGGREGATES	ZONE II
	2) FINE AGGREGATES	ZONE I
3	TARGET STRENGTH FOR MIX PROPORTIONING
	f'ck =fck + 1.65 s	f'ck = target average compressive strength at 28 days, fck = characteristic compressive strength at 28 days, and s = standard deviation.
			FROM TABLE 1 , STANDARD DEVIATION	S= 5 N/mm2
			TARGET STRENGTH FOR MIX PROPORTIONING	50 +1.65 x 5

fck	50
s	5
fck' = fck + 1.65 x S (N/mm2)	58.25
W/C	0.335
C. AGGREGATES SIZE in mm	20
WATR CONTENT (Liters)	186
total water content in liters	197.16
0.23% REDUCTION OF WATER	145.8984
CEMENT CONTENT kg/m3	435.52
VOLUME OF CEMENTITIOUS MATERIAL INCLUDING FLY ASH kg/m3	435.52
NEW W/C RATIO	0.34
CEMENT (OPC)	435.52
VOLUME OF COARSSE AGG. AS PER TABLE 3	0.62
VOLUME OF COARSE AGGREGATE	0.558
VOLUME OF FINE AGGREGATE	0.442
VOULME OF CONCRETE IN m3	1
VOL.OF CEMENT IN m3	0.138
VOL.OF WATER IN m3	0.146
VOL. OF FLY ASH in m3	0.000
VOL. OF CHEMICAL ADMIXTURES m3	0.0038
VOL. OF ALL AGGREGATES	0.712
MASS OF COARSE AGGREGATE KG	1088.624
MASS OF FINE AGGREGATE KG	862.315

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