MIX DESIGN FOR GRADE: M-40

Design Mix. As Per I.S Codes: 10262 and 456

A DATACharacterstic Compressive Strength required @ 28 Days 40 MpaStandard deviation considered as per I.S.456 5Target strength char. Strength + 1.64 X STDV 48 MpaMaximum Size of Aggregate mm. 20 mmDegree of Workability 180 mmCementitious Content (Min) 520 KgsFlyash replacement 15%Cement 444Flyash 76Water Cement Ratio (Max) 0.3Water content 156 KgsAdmixture (1.% of Cem. Material) 5.20 Kgs

0 Kgs

B TEST DATA FOR MATERIALSi) Specific Gravity of Cement 3.15

(ACC OPC 53 Grade Cement)

ii) Specific Gravity of Fly Ash 2.26

(Source: Ashtek)

iii) Specific Gravity of Coarse Aggregate 20 mm 2.8610 mm 2.83

iv) Specific Gravity of Fine Aggregate N/ Sand 2.8C/ Sand 2.75

v) Water Absorption of Coarse Aggregate 20 mm 1.6310 mm 1.73

vi) Water Absorption of Fine Aggregate N/ Sand 3.5C/ Sand 5.65

Aggregate ProportioningCoarse Aggregate Fine Aggregates

20 mm 10 mm N/ Sand C/ Sand60% 40%

% age 58 42 0 100% age 34.80% 25.20% 0.00% 40.00%

Amount of Air entrained in wet concrete in % 2Hence effective volume shall be 980

Determination of Aggregates

980 =water

+Cement

+Flyash

+Aggreg.

x1

Sp. Gravity Sp. Gravity Sp. Gravity % age pr.

04/18/2023

Concrete Mix Design Grade M-40

Grade of Concrete 40

Cement 444 W/a M/c

Flyash 76 % %

Free W/C ratio 0.3

Water 156

A20 646 1.63 635 11 0 635 0

A10 463 1.73 455 8 0 455 0N / Sand 0 3.5 0 0 0 0 0

C / Sand 714 5.65 674 40 0 674 0

2499 59 0

Effective Water 215

Final Mix

Cement 444 Kgs.

Flyash 76 Kgs.Eff. W/C Ratio 0.41Water 215 Kgs.A20 635 Kgs.A10 455 Kgs.N / Sand 0 Kgs.C / Sand 674 Kgs.Admixture 5.20 Kgs.

Density 2505

REMARK / APPROVAL STATUS : The above parameters are based on Surface Saturated Dry ( S.S.D )

Due correction regarding water absortion and moisture correction are taken care while batching on the

RMC plant .Hence some of the aggregates weight may vary accordingly.Also with respect to sieve

analysis the proportioning may be decided at the time of batching.

MIX

PR

OP

OR

TIO

N O

N S

SD

C

ON

DIT

ION

SM

IX P

RO

PO

RT

ION

AF

TE

R

CO

RR

EC

TIO

N

Kg / M3