What Is Concrete Mix Ratio?

A properly designed mixture possesses the desired workability for the fresh concrete and the required durability and strength for the hardened concrete. Typically, a mix is about 10 to 15 % cement, 60 to 75 % aggregate and 15 to 20 % water. This concrete mix ratio of aggregate to sand to cement is an important factor in determining the compressive strength of the concrete mixture.

Type of Concrete Mix Ratio.

As Per IS Code 456-2000 three different part of Concrete Mix Ratio

1- Nominal Concrete Mix Ratios

Concrete Grade
Mix Ratio
Compressive Strength
MPa (N/mm2)psi
Normal Grade of Concrete
M51 : 5: 105 MPa725 psi
M7.51: 4: 87.5 MPa1087 psi
M101 : 3: 610 MPa1450 psi
M151 : 2: 415 MPa2175 psi
M201: 1.5 : 320 MPa2900 psi

2- Standard Mixes Ratio

Concrete Grade
Mix Ratio
Compressive Strength
MPa (N/mm2)psi
Standard Grade of Concrete
M251: 1: 225 MPa3625 psi
M30Design Mix30 MPa4350 psi
M35Design Mix35 MPa5075 psi
M40Design Mix40 MPa5800 psi
M45Design Mix45 MPa6525 psi

3- High Strength Concrete Mix Ratio

Concrete Grade
Mix Ratio
Compressive Strength
MPa (N/mm2)psi
High Strength Concrete Grades
M50Design Mix50 MPa7250 psi
M55Design Mix55 MPa7975 psi
M60Design Mix60 MPa8700 psi
M65Design Mix65 MPa9425 psi
M70Design Mix70 MPa10150 psi

Click Here To See Different Grades Of Concrete And Their Applications

Slump value of Concrete

The concrete slump test measures the consistency of fresh concrete before it sets. It is performed to check the workability of freshly made concrete, and therefore the ease with which concrete flows. It can also be used as an indicator of an improperly mixed batch. The test is popular due to the simplicity of the apparatus used and simple procedure. The slump test is used to ensure uniformity for different loads of concrete under field conditions.

Concrete MixesSlump range in mm
Columns, Retaining Walls75-150mm
Beams & Slabs50-100mm
CC Pavements20-30mm
Decks of bridge30-75mm
Vibrated Concrete12-25mm
Huge Mass Constructions25-50mm

Click Here To See Concrete Slump Test Definition, Procedure And Types Of Slump Test

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