F’ck = fck + factor based on grade of concrete , whichever is higher For M30 grade concrete Factor based on grade of concrete = 6.50.

You also have the option to opt-out of these cookies. a) Grade designation : M30 b) Type of cement : OPC 53 Grade conforming IS 12269 c) Maximum nominal size of aggregate : 20mm d) Minimum cement content : 320 kg/m 3 (IS 456:2000) e) Maximum water-cement ratio : 0.45 (Table 5 of IS 456:2000)

Lesser the water-cement ratio in a workable mix greater will be its strength. As we described, as per MORTH 5th revision, our requirement in 28 days for M30 is 42 MPa.So now we are going to decrease the water-cement ratio a bit.Previously we selected 0.39 water-cement ratio.

The mix proportion of this grade is approximately 1:0.75:1.5 (Cement: Sand: Aggregate).

Considering the durability requirements too.

A simple method of concrete mix design for pumpable concrete based on an estimated weight of the concrete per unit volume is presented in the article. M30 Grade of Concrete Mix Design Calculation Formula We are describing formula of concrete mix design calculation for M30 Grade of Concrete Mix Design but you can use this formula for any grade of concrete Formula : Volume of material content = material weight / (material specific gravity * total volume) Volume of concrete = 1 Cu.M. The basic principle which is generally used for mix design for proportioning mixes is Abram's law for strength development.

gravity x total volume.Mass of coarse aggregates 12.5 mm = 0.745 x 0.60 x 0.50 x 2.857 x 1000 = 638.5 kgMass of fine aggregates = 0.745 x 0.40 x 1.00 x 2.723 x 1000 = 811.5 KgIn moisture correction, Weights of Aggregate and water can be replaced by the weights of the free moisture on Aggregates.The trail mix is required to define the workability ( slump ), density, compaction, and, most of all, the compressive strength of different concrete grades for various purposes.We are describing here trial for M30 Grade of Concrete Mix Design, but you can use this trial procedure for any grade of concrete.To check the compressive strength of trial mix concrete, we have to cast at least 12 nos. © 2014 bloggercivil.com. Two more trials having variation of + or – 10 percent of water – cementitious material ratio shall be carried out and a graph between these water cementitious materials ratios and their corresponding strengths shall be plotted to work out the mix proportions for the given target strength for field trials . Here, M represents ‘MIX’ and 30 represents the characteristic compressive strength of a 150 mm cube of concrete at 28 days of curing in N/mm^2. All rights reserved. Average of 28 days strength is ( 41.52 + 41.43 ) / 2 = 41.48 N/mmWhich is less than 42 MPa.

M30 2 Type of Cement. Concrete Mix Design Calculation : M20, M25, M30, M40 Grade Concrete Concrete mix design is a procedure of selecting the suitable ingredients of concrete and their relative proportions with an objective to prepare concrete of certain minimum strength, desired workability and durability as economically (value engineered) as possible. Water content with using appropriate dosages of super plasticisers =186 X 0.7 =130 kg/cum From figure 1 Page no 4 of IS 10262 : 2019 free water cement ratio required for the target strength of 38.25 N/mm2 is 0.42 for PPC (curve 2) which is less than the maximum value of 0.45 prescribed for mild exposure for reinforced concrete as per Table 5 of IS 456 :2000 hence OK Hence Volume of coarse aggregate and fine aggregate = 1 – (0.112-0.134–0.0015-0.005) = As per clause number 6.2.7 , Table 10 page number 10 of IS 10262 : 2019 .

These cookies will be stored in your browser only with your consent. Concrete mix design is required to achieve target strength in structures. According to this law, for any given conditions of test the strength of workable concrete mix is dependant only on the water-cement ratio. It is mandatory to procure user consent prior to running these cookies on your website.

But opting out of some of these cookies may have an effect on your browsing experience.This website uses cookies to improve your experience.

2.

If you are getting any doubt, please scroll above for full details.Course Aggregate Proportions ( 20 mm : 10 mm ) : 50%Aggregate = 1- ( cement volume + water volume + admixture volume )Now we got a volume of each material for use in concrete.Mass of coarse aggregates 20 mm = 0.742 X 0.60 X 0.50 X 2.885 X 1000 = 642.2 Kg.Mass of coarse aggregates 12.5 mm = 0.742 X 0.60 X 0.50 X 2.857 X 1000 = 636 kgMass of fine aggregates = 0.742 X 0.40 X 1.00 X 2.723 X 1000 = 808.2 KgNow we calculate the quantity of the material for a trail mixWe are repeating the procedure because it’s very important tips for a trail mix.As we described, our requirement of a slump is 125 – 150 mm at the site.We have to check the slump after each 30-minute interval of up to 120 minutes ( 2 hours).We are repeating this because it’s very important tips for trial cube casting.As we described before, we cast 12 numbers of a cube for compressive strengthAs we described before that our target means strength for M30 is 42 Mpa.minimum compressive strength required in 3 days – 40 % – 17 Mpaminimum compressive strength required in 7 days –  80 % – 34 MpaSo as you can see from this result described above, we got a good result in 3 days, 7 days and 28 days. I STIPULATIONS FOR PROPORTIONING. We'll assume you're ok with this, but you can opt-out if you wish. Standard Deviation = 5.00 F’ck= 30 + 1.65 X 5 = 38.25 N/mm2. Concrete Mix Design With PPC Cement