Mix Design M-40 Grade

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The mix design M-40 grade for Pier (Using Admixture – Fosroc) provided here is for reference purpose only. Actual site conditions vary and thus this should be adjusted as per the location and other factors.

Parameters for mix design M40

Grade Designation = M-40
Type of cement = O.P.C-43 grade
Brand of cement = Vikram ( Grasim )
Admixture = Fosroc ( Conplast SP 430 G8M )
Fine Aggregate = Zone-II
Sp. Gravity Cement = 3.15
Fine Aggregate = 2.61
Coarse Aggregate (20mm) = 2.65
Coarse Aggregate (10mm) = 2.66
Minimum Cement (As per contract) = 400 kg / m3
Maximum water cement ratio (As per contract) = 0.45

Mix Calculation: -

1. Target Mean Strength = 40 + (5 X 1.65) = 48.25 Mpa

2. Selection of water cement ratio:-
Assume water cement ratio = 0.4

3. Calculation of cement content: -
Assume cement content 400 kg / m3
(As per contract Minimum cement content 400 kg / m3)

4. Calculation of water: -
400 X 0.4 = 160 kg Which is less than 186 kg (As per Table No. 4, IS: 10262)
Hence o.k.

5. Calculation for C.A. & F.A.: – As per IS : 10262 , Cl. No. 3.5.1

V = [ W + (C/Sc) + (1/p) . (fa/Sfa) ] x (1/1000)

V = [ W + (C/Sc) + {1/(1-p)} . (ca/Sca) ] x (1/1000)

Where

V = absolute volume of fresh concrete, which is equal to gross volume (m3) minus the volume of entrapped air ,

W = mass of water ( kg ) per m3 of concrete ,

C = mass of cement ( kg ) per m3 of concrete ,

Sc = specific gravity of cement,

(p) = Ratio of fine aggregate to total aggregate by absolute volume ,

(fa) , (ca) = total mass of fine aggregate and coarse aggregate (kg) per m3 of
Concrete respectively, and

Sfa , Sca = specific gravities of saturated surface dry fine aggregate and Coarse aggregate respectively.

As per Table No. 3 , IS-10262, for 20mm maximum size entrapped air is 2% .

Assume F.A. by % of volume of total aggregate = 36.5 %

0.98 = [ 160 + ( 400 / 3.15 ) + ( 1 / 0.365 ) ( Fa / 2.61 )] ( 1 /1000 )

=> Fa = 660.2 kg

Say Fa = 660 kg.

0.98 = [ 160 + ( 400 / 3.15 ) + ( 1 / 0.635 ) ( Ca / 2.655 )] ( 1 /1000 )

=> Ca = 1168.37 kg.

Say Ca = 1168 kg.

Considering 20 mm : 10mm = 0.6 : 0.4

20mm = 701 kg .
10mm = 467 kg .

Hence Mix details per m3

Cement = 400 kg
Water = 160 kg
Fine aggregate = 660 kg
Coarse aggregate 20 mm = 701 kg
Coarse aggregate 10 mm = 467 kg
Admixture = 0.6 % by weight of cement = 2.4 kg.
Recron 3S = 900 gm

Water: cement: F.A.: C.A. = 0.4: 1: 1.65: 2.92

Observation: –
A. Mix was cohesive and homogeneous.
B. Slump = 110mm
C. No. of cube casted = 12 Nos.
7 days average compressive strength = 51.26 MPa.
28 days average compressive strength = 62.96 MPa which is greater than 48.25MPa

Hence the mix is accepted.

We are thankful to Er Gurjeet Singh for this valuable information.

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Comments
  • D.Ramachandran February 18, 2013 at 11:23 pm

    Sir,
    i want mix ratio in m40 opc 53 grade of concrete

  • rakesh kumar sahu August 1, 2013 at 10:26 am

    SIR, GIVE GUIDANCE HOW WE WILL DESIGN FOR HIGH STRENGTH CONCRETE LIKE M-60,M-80 ACTUALLY I WANT DEVELOP HIGH STRENGTH CONCRETE BY USING LOCALLY AVAILABLE MATERIAL

  • shoban August 15, 2013 at 6:36 am

    i am final yr BE student i want to latest admixture for concrete

  • gunjan August 25, 2013 at 9:58 pm

    I want to
    80 mm press pavar block strenth 35 m
    Pls send me how to making this strenth mix desing

  • geeta batham September 4, 2013 at 5:34 am

    i want mix ratio in m25 opc 53 grade of concrete witout use of any admixture

  • Nikhil Gupta October 30, 2013 at 3:15 am

    Sir,
    i want mix ratio in m40 opc 53 grade of concrete & wnt to find flexural strenth of concrete.
    with using waste steel fibre.

  • dhaval January 11, 2014 at 11:32 pm

    i want mix ratio in m40 ppc 53 grade of concrete

  • Deena Naidoo March 17, 2014 at 1:21 pm

    Hi
    please advise me, on how to achieve a 40mpa interlocking paver.
    thanks

  • Rakesh Sadiwal April 14, 2014 at 2:09 am

    Dear sir
    please send the latest M-40 mix design (PQC) cement PPC use. i need this answer please send immediately

  • rajan July 5, 2014 at 8:11 am

    sir
    i want to know the concrete price for M40 grade cost in malaysia

  • DAULAT RAM July 27, 2014 at 11:48 pm

    I WANTS M 40 GRADE PAVERS CONCRETE MIX DESIGN THANKS

  • smit karnawat September 20, 2014 at 2:51 am

    i want to know how 2 make m40 paver block.what all we have 2 add in is

  • Abdul Amair October 25, 2014 at 10:30 am

    I want to know the actual ratio of M-40 Cement.
    In a hurry.

  • sabarinathan November 15, 2014 at 2:38 am

    how to calculation m40 concrete details

    thanks

  • ankur oza November 18, 2014 at 10:13 am

    Hello, i want know about m45 ration for making 80 mm raber paver , so please send me detial ..thanks…

  • Post a comment

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