concrete mix - engineeringcivil.com
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Mix Design for Concrete Grade = M 25
C1.Design stipulation:i Characteristic Compressive strength = 25 N/mm2ii Maximum size of aggregate = 20 mmiii Degree of workability = 0.8iv Degree of quality = Goodv Type of Exposure = Mild
C2. Test data for materials(i) Cement used = PPC(ii) Specific gravity of Cement = 3.15(iii) Specific gravity
Fine Aggregate = 2.7 Coarse Aggregate = 2.6
(iv) Water absorption Fine Aggregate = 1 % Coarse Aggregate = 0.78 %
(v) Free Surface Moisture Fine Aggregate = 1.5 % Coarse Aggregate = Nil %
(vi)= 3 Zone
C3.Target mean strength= 31.60 N/mm2
C4. Selection of Water Cement ratio Water Cement ratio = 0.45 (From fig. 1, Is 10262)
Fine Aggregate confirming the table 4, IS 383- Zone
C7. Determination of Fine & Coarse aggregateAir entrapped in concrete = 2 % (From Table 3, IS 10262)Actual quantity of concrete "V" = 0.98 Cum
Materials required for concrete Grade M 25
Concrete quantity = 0.01025 Cum
Material name Quantity Unit
1 Cement 4.24 kg
2 Fine Aggregate 0.06 kg
3 Coarse Aggregate 20mm 7.33 kg
4 Coarse Aggregate 10mm 4.89 kg
5 Water 0.02 ltr
6 Slump 75 - 100 mm
7 W/C ratio 0.45
Sl.No