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How to calculate the quantity of water for a given concrete mix.?

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Asked: December 10, 20182018-12-10T22:56:53+05:30 2018-12-10T22:56:53+05:30In: Concrete
Gopal Mishra
Gopal Mishra

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Gopal Mishra

How to calculate the quantity of water for a given mix concrete. As it would be required to calculate for mix 1:2:4.

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  1. aviratdhodare

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    aviratdhodare
    2020-08-21T13:24:48+05:30Added an answer on August 21, 2020 at 1:24 pm

    To calculate the amount of water required for a concrete mix, we need to calculate the quantity of cement required. Assume the required amount of cement is 50kg Amount of water required = W/C ratio x cement required. = 0.5 x 50 =25 kg or 25 lit

    M 15 grade concrete

    • Cement = 1 Part
    • Sand = 2 Part
    • Aggregate = 4 Part
    • Total dry volume of Material Required = 1.57 cu.m
    • 1+2+4=7
    • Water cement ratio =0.45
    • Water /cement =0.45
    • Water = cement X 0.45
    • Cement is =322.56 kg
    • Water =322.56 X 0.45
    • Water =145 liter
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  2. NARENDERSINGH

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    2019-04-28T14:41:50+05:30Added an answer on April 28, 2019 at 2:41 pm

    As per Is code 456-200 clauses 6.1.2

    maximum free water cement ratio for M15(1:2:4) is 0.50

    for 1 cubic metre concrete

    1+2+4=7

    cement content =1/7 *1 =0.1428 m3

    density =mass/volume

    density of cement =1440kg/m3 (note :- density of cement varies with grade and brand)

    mass of cement =0.1428*1440=205.632 kg (note:- please consider minimum cement content also i.e. also given in clauses 6.1.2 of Is code)

    w/c as per IS code is 0.50 for M15

    w/c=0.50

    water content=0.50*205.632=102.8 m3 =103 litre

    Note:-w/c depends on various factors like moisture content of fine/coarse aggregate,workability …..

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  3. vsandeep577@gmail.com

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    vsandeep577@gmail.com Beginner
    2020-05-23T19:48:26+05:30Added an answer on May 23, 2020 at 7:48 pm
    How to calculate the quantity of water for a given concrete mix.?

    for Mix 1:2:4 water requirement would be-

    Plain concrete(moderate)

    The Minimum cement content for M15=240 kg/ m3

    and min water cement ratio =water/cement =0.60

    =water/240=0.60

    Min water requirement for mix=240*.60=120 liters

    It is also depend upon climate condition,method of mixing and the purpose of use.

     

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  4. Poras Patel

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    2020-04-01T22:29:17+05:30Added an answer on April 1, 2020 at 10:29 pm

    Dear Sir

    First of all you need to know the quantity of cement.

    1:2:4 Means M15 Grade

    Cement require for 01 Cu.m Concrete is:

    Wet volume of concrete is 1.54 Cu.m = (1.54/1+2+4)*1 = 0.22 Cu.m

    Now 0.22 Cu.m Cement = 0.22*1440 Kg/m3 (Density of cement) =316.80 kg cement = 316.80 kg

     

    Now W/c Normally require for M15  Grade is 0.50

    So water require: W/C = 0.50 =

    C*0.50 = Water

    316.80*0.50=Water

    Water = 158.40 Litre/Cu.m

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  5. Seshachalam Chamarthy

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    2020-05-13T21:40:47+05:30Added an answer on May 13, 2020 at 9:40 pm

    Calculate the existing moisture content in the aggregates (fine & coarse) and it will be deducted from the water content, which is calculated from water cement ratio

    Moisture content in Coarse aggregate – x1

    Moisture content in fine aggregate – x2

    Moisture content based on water cement ration (example -0.355) =  0.355*450kg/cum = 159.75

    Net water content is = 159.75 – x1 – x2  

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  6. Preet Chovatiya

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    2020-11-28T19:11:29+05:30Added an answer on November 28, 2020 at 7:11 pm

    As we know 1:2:4 ratio is for M15 concrete. Generally Water quantity is calculated as per below formula:

    Water Quantity=W/C ratio*Cement Quantity

    Generally W/C ratio is lays between 0.4 to 0.6 as per IS 10262(2009).

    Now first we have to assume cement quantity, so let’s assume cement quantity=50 KG and W/C ratio=0.5

    Now let’s calculate water quantity for 50 KG cement.

    Water Quantity=0.5*50=25 liter.

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  7. Madeh Izat Hamakareem
    2018-12-12T22:10:50+05:30Added an answer on December 12, 2018 at 10:10 pm

    Obviously, water quantity cannot be decided based on the quantity mix design proportions only. There are other data which need to be known in order to be able to specify water content quantity for example, types of structural element, maximum aggregate size, and required workability. If these data are available, then the quantity of water can be easily computed from Table 6.3.3 of ACI 211.1-91.

    Required slump can be determined based on the structural element type. Maximum aggregate size and slump value can be used to determine quantity of water for 1 meter cubic of concrete.

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  8. wissam

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    2020-07-10T13:40:02+05:30Added an answer on July 10, 2020 at 1:40 pm

    Can you please tell me where you got the wet of concrete is 1.54 cu/m

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  9. dbnalawade

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    2020-07-30T11:48:06+05:30Added an answer on July 30, 2020 at 11:48 am

    The  accurate quantity of water for a mix depends your selection of water cement ratio, compressive strength, workability, durability, maximum nominal size of aggregate, grading,type of aggregates , absorption and the degree of control. The question of 1:2:4 could be on mix by volume or mass. W/C ratio is usually determined by mass.

    IS:456 is s good code to follow for design a mix.

     

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  10. Omprakash Dhawale

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    2020-10-05T19:35:29+05:30Added an answer on October 5, 2020 at 7:35 pm
    This answer was edited.
    How to calculate the quantity of water for a given concrete mix.?

    Sir,

    With reference to the IS10262-2019 code, for 10mm aggregate sizes, the water content is 208Kg/ meter cube. Refer the attached table.  

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  11. muganeza2016

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    2018-12-13T15:53:38+05:30Added an answer on December 13, 2018 at 3:53 pm

    Yes, thank you Mr. Madeh Izat Hamakareem for your good answer.

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  12. chrisjackson

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    2020-03-10T13:41:12+05:30Added an answer on March 10, 2020 at 1:41 pm

    If we need to calculate Water quantity for concrete, first find the cement content for the volume. Therefore, Required amount of water = 0.5 X 50 kg = 25 litres / 50 kg cement bag. For Design mix, the W/C Ratio will depend upon the workability, strength requirements.

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  13. vihar varu

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    2020-04-08T09:15:00+05:30Added an answer on April 8, 2020 at 9:15 am

    The quantity of water calculates the base one depend on the water-cement ratio.

    W/C=AS PER IS CODE RATIO(DEPEND ON GRADE OF CONCRETE)

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  14. chrisjackson

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    2020-05-18T20:56:19+05:30Added an answer on May 18, 2020 at 8:56 pm

    The mix 1:2:4 represents the M15 grade of concrete, which means the concrete formed with this ratio has a compressive strength of 15 kN/m^2. 1:2:4 represents the amount of cement, fine aggregate (sand) and coarse aggregate to be added during batching of concrete.
    Calculation of Water Quantity for Concrete
    If we need to calculate Water quantity for concrete, first find the cement content for the volume. Therefore, Required amount of water = 0.5 X 50 kg = 25 litres / 50 kg cement bag. For the Design mix, the W/C ratio will depend upon the workability, strength requirements.

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  15. shankar

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    2020-08-17T08:35:01+05:30Added an answer on August 17, 2020 at 8:35 am

    Actually water content is determined from the W/c ratio of different mixes as per IS 456:2000. but roughly for normal mix (1:2:4), we can calculate as

    vol. of cement = 0.0354 cu.m

    vol. of C.A+ F.A=2*0.0354+4*0.0354=0.211 cu.m

    Vol. of water = 11.67 litre for 1 bag + 5% of total aggregate

    = 11.67+(0.05*0.211)*1000=11.67+10.55= 22.22 litre

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  16. [Deleted User]
    2020-08-19T16:16:27+05:30Added an answer on August 19, 2020 at 4:16 pm

    Here we have 1:2:4 mix is given, which is the standard ratio for M15 grade.

    I do the calculation for 1 m3 concrete.

    for cement content, c= 1/(1+2+4)= 1/7 m3

    weight of cement = {1/7/(.035)}*50 = 204kg

    total weight of cement for mix = 1.54*204 = 310.20kg

    (total weight of cement for mix =310.20kg) >( minimum cement content – 300kg                                                                                      for moderate exposure condition)

    <(maximum cement comntent -450kg)

    for exact water content, we should know about exposure conditions, for different exposure conditions water content will be different. here I mention different exposure conditions with their maximum w/c ratio.

    mild-.55

    moderate – .50

    sever – .45

    very sever – .45

    extreme – .40

    I do the calculation for moderate exposure condition (you can do it for others exposure condition also, but the method will be the same. for other calculation you should check cement content for minimum and maximum cement content with different exposure condition)

    w/c = .50

    w = .5*310.20

    w = 155.10 kg = 155.10 liter

    so, water content for m15 grade with moderate exposure is 155.10 liter.

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  17. sanjaypakad

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    2020-09-07T18:12:29+05:30Added an answer on September 7, 2020 at 6:12 pm

    w/c ratio is the weight ratio of the quantity of water used and weight of cement used in a particular concrete mixture.

    w/c ratio = (water weight)/(cement weight)

    If you do not know what number to use for the (w/c) ratio, please refer to the standards (depending on the country you reside/ where you want to use the concrete) regarding the maximum limits on the w/c ratio.

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  18. Subash Pathak

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    2020-09-10T23:59:15+05:30Added an answer on September 10, 2020 at 11:59 pm

    1:2:4 i.e cement:sand: coarse aggregate ratio during the batching of concrete. for the quantity of water, first, find out cement content for the given volume.

    lets cement content be x (kg)

    then,

    water requirement = x * 0.5 liters/ bag of cement

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  19. rawaa

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    2020-09-13T21:19:15+05:30Added an answer on September 13, 2020 at 9:19 pm

    it depend on the code of ACI 211.1-91

    the water content depend on quantity of cement and many factors effect like size of aggregate and compressive strength that the concrete designed for.

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  20. Dhanya

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    2020-07-29T18:09:22+05:30Added an answer on July 29, 2020 at 6:09 pm

    The W/C ratio varies from 0.4 to 0.6 as per IS 10262(2009) for a normal mix

    To calculate the amount of water required for a concrete mix, we need to calculate the quantity of cement required.

    Assume the required amount of cement is 50kg

    Amount of water required = W/C ratio x cement required.

    = 0.5 x 50

    = 25 litres/50kg

    For the design mix, W/C ratio depends upon the workability and strength requirements.

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  21. Vívèk Gúptã

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    2020-02-24T22:44:32+05:30Added an answer on February 24, 2020 at 10:44 pm

    it has a simple way to solve that.

    The taken water ratio of your mix design (multiply)Weight of cement.

    W/C*Quantity of cement= Quantity of water

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