CONCRETE:-
Concrete it’s a construction component, a mixture of cement, sand, and course or fine aggregate with water which is called us concrete, which is used in construction in different structures, In Construction industry concrete are used to mix in following ways as follows
1.Hand Mix Concrete 2. Machine mix Concrete 3. Ready Mix Concrete
How to Calculate Cement, Sand, and Aggregate Quantities in Concrete
For Example size of slab
Length (L) – 1m, Width (B) – 1m, Thickness /Depth (D) -1.0 m
SO, Total Volume of concrete = (L x B x D) = 1 x 1 x 1 = 1.0 mᶟ
if Grade of Concrete -M7.5 , Ratio of M 7.5 Concrete – 1 : 4 : 8
Which Means 1% of Cement, 4% of Sand & 8% of Aggregate
FORMULA TO FIND THE QUANTITIES OF CEMENT, SAND, AGGREGATE IS
Formula = \frac{Dry Volume of Concrete * Volume of Concrete * Ratio of (Cement / Sand /Aggregate) }{Total Ratio (Cement + Sand + Aggregate)}
Dry Volume of Concrete -1.54 mᶟ , Volume of Concrete -1.0 mᶟ
Ratio of Cement = 1, Ratio of Sand =4, Ratio of Aggregate =8 , Total Ratio (1+ 4+ 8) = 13
Required Quantity of Cement , Sand & Aggregate in 10 mᶟ Concrete is
Cement = \frac{1.54 * 1 * 1}{ 1 + 4 + 8} = 0.118 mᶟ
Sand= \frac{1.54 * 1 * 4}{ 1 + 4 + 8} = 0.474 mᶟ
Aggregate = \frac{1.54 * 1 * 8}{ 1 + 4 + 8} = 0.948 mᶟ
Which Means 1.0 mᶟ of M7.5 Grade Concrete Required,
Cement – 0.118 mᶟ / 1mᶟ of cement Equal to 29 bags of Cement,
So, 1.184 x 29 = 3.43 Bags of Cement is required
1 Bag of cement to is Equal to 50Kg, So 50 x 3.43 = 171.169 kg Cement Required (Without Any Wastage)
Sand – 0.474 mᶟ / 1mᶟ equal to 35.31 cu.ft / cubic foot / ftᶟ
So, 0.474 x 35.31 = 16.732 cu.ft / cubic foot Sand is required (Without Any Wastage)
Aggregate – 0.948 mᶟ / 1mᶟ equal to 35.31 cu.ft / cubic foot / ftᶟ
So, 0.948 x 35.31 = 33.463 cu.ft / cubic foot Aggregate is required (Without Any Wastage)
