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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

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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
  • Sanjeev Tiwari October 9, 2009 at 9:43 am

    Dear sir,
    Sir i have just started the manufacturing unit of paving blocks
    brick will you please send me the design for M15,M20,
    M25,M30,M35,M40 & M45 BY USING

  • Yash Kumar Sharma October 9, 2009 at 10:05 am

    Respected Sir,
    Please send the Concrete mix design M-20,M-25,M-30,M-35,M-40,M-45,and
    M-50.

  • Parwej October 20, 2009 at 11:47 am

    Please let me know the IS or any relavant code for the Design Mix of Heat Resistance concrete used in Steel Plant

  • dinesh kumar m October 22, 2009 at 6:06 am

    sir i need M15, M25, M30, M40, M50 mix designs for making paver blocks( interlocking pavers)
    i using cement 53G opc and 6mm metal, sand and also quary dust. pls send me a mix design in
    kg
    thanks

  • amitava October 29, 2009 at 12:01 am

    Please give me a mix design of m25 m30 of kolkata region (zone 2)

  • manoj bhardwaj November 5, 2009 at 8:49 am

    M40 grade for interlock tiles how mauch cement ,send and gravel
    requried send me detail. concrete design
    thanks

  • husein hannouna November 19, 2009 at 12:22 pm

    hi sir
    I am starting a concrete block (kerbstone (curbstone),paver (interlock) ), can you send me the correct mix design for m3 of semi dry mix for the above mentioned products.
    type mixer in my factory
    alfelder eisenwerke

  • Harpreet Singh November 24, 2009 at 3:25 am

    Hi,

    Kindly send the Ratio of Cement , Course and Sand in PCC & RCC in all available Grades

    Also cement Water ratio of all Grades

    E.g PCC M20 (1:4:8)
    RCC M20 (1:1.5:3)

    B//R
    Harpreet Singh

  • V.C Sasi November 26, 2009 at 2:06 am

    Sir,

    Kindly send the Ratio of PCC & RCC in all available Grades especially M30, M35,M40 and M45.

    Regards,

    Sasi

  • V.C Sasi November 26, 2009 at 2:11 am

    Sir,

    Please give the mixing ratio of M25,M30,M35,M40 and M45 (eg M20 =1:1.5:3)

  • dinesh December 21, 2009 at 12:22 am

    Sir please send a concrete mix design for M15, M25, M30, M40 for paver manufacturing
    unit we are using cement 53 O P C 6mm metal , sand / quary dust

  • ajay dubey December 25, 2009 at 7:56 am

    sir.pl send interlinking paves block design with high strength and paves block mix design with strength and cement 10mmaggregate sand ratio

  • Gerrit January 19, 2010 at 9:12 am

    DEar Sir Please give me a 40 m.p.a. mix desighn for pavement, concrete

  • 0.40 February 20, 2010 at 1:07 pm

    how much is the price per cubic

  • Pravin Chaudhari February 26, 2010 at 6:04 am

    Dear Sir,
    Pls send the concrete Mix Design for 60mm Thich colorado interlocking Concrete paver blocks of M40 Grade

    Regards,
    Pravin

  • raja March 2, 2010 at 2:14 am

    pls send me latest mix design softwares and wat are the importance of admixtures using in concrete resist the fire….

  • raja March 2, 2010 at 2:18 am

    hello sir…
    In recent days which admixture s used for fire resisting buildin…..wats de comparison bet
    normal n admixtured concrete………………

  • Steve Musundi March 2, 2010 at 5:07 am

    Dear Sir/Madam Kindly request for a design mix for Roller Compacted Concrete for pavement roads not exceeding 20 tonnes. The mix should include the use of fly ash as we intend to reduce the use of portland cement
    Thank you

  • la pyae March 18, 2010 at 1:35 pm

    How to calculate mix design for M45?please explain me detail.send my mail

  • sujani March 20, 2010 at 9:20 am

    sir,
    we have to design M40
    and it should be less weight for that what we have to do?
    what type of admixtures we have to add?
    can you send that details
    thankyou.

    • saravanan July 4, 2013 at 11:05 pm

      Before start the trial mix for concrete ,do the sp gravity fine and coarse aggregate and all in one aggregate and check the voids ratio as per is 2386 ,Admixture CAC,BASF ,GRACE,FOSROC

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