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Concrete Mix Design Guide

This document provides the mix design for concrete with a grade of M25. The key specifications are a characteristic compressive strength of 25 N/mm2, maximum aggregate size of 20 mm, workability of 0.8, and exposure to mild conditions. Testing data on the cement, fine aggregate, and coarse aggregate is also given. Based on the target mean strength of 31.60 N/mm2 and a water-cement ratio of 0.44, the quantities of materials needed for 1 cubic meter of concrete are determined to be 422.73 kg of cement, 565.72 kg of fine aggregate, 709.71 kg of 20mm coarse aggregate, 473.14 kg of 10mm coarse aggregate

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Omar Marghani Salma
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159 views3 pages

Concrete Mix Design Guide

This document provides the mix design for concrete with a grade of M25. The key specifications are a characteristic compressive strength of 25 N/mm2, maximum aggregate size of 20 mm, workability of 0.8, and exposure to mild conditions. Testing data on the cement, fine aggregate, and coarse aggregate is also given. Based on the target mean strength of 31.60 N/mm2 and a water-cement ratio of 0.44, the quantities of materials needed for 1 cubic meter of concrete are determined to be 422.73 kg of cement, 565.72 kg of fine aggregate, 709.71 kg of 20mm coarse aggregate, 473.14 kg of 10mm coarse aggregate

Uploaded by

Omar Marghani Salma
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Mix Design for Concrete Grade = M 25

C1.Design stipulation:
i Characteristic Compressive strength = 25 N/mm2
ii Maximum size of aggregate = 20 mm
iii Degree of workability = 0.8
iv Degree of quality = Good
v Type of Exposure = Mild

C2. Test data for materials


(i) Cement used = PPC
(ii) Specific gravity of Cement = 3
(iii) Specific gravity
Fine Aggregate = 2.8
Coarse Aggregate = 2.61
(iv) Water absorption
Fine Aggregate = 2.1 %
Coarse Aggregate = 0.78 %
(v) Free Surface Moisture
Fine Aggregate = 2.1 %
Coarse Aggregate = Nil %
(vi) Fine Aggregate confirming the table 4, IS =
383- Zone
3 Zone

C3.Target mean strength


= 31.60 N/mm2

C4. Selection of Water Cement ratio


Water Cement ratio = 0.44 (From fig. 1, Is 10262)
C7. Determination of Fine & Coarse aggregate
Air 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 = 1 Cum
Sl. Material name Quantity Unit
No

1 Cement 422.73 kg
2 Fine Aggregate 565.72 kg
3 Coarse Aggregate 20mm 709.71 kg
4 Coarse Aggregate 10mm 473.14 kg Prepared by,
5 Water 183.63 ltr
6 Slump 75 - 100 mm
Sathiyaseelan
7 W/C ratio 0.44 +91 8894770272

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