What is Concrete Mix Ratio?
Finding the precise ratio of each concrete ingredient to produce the desired quality and property is known as determining the concrete mix ratio.
Typically, a concrete mix contains 15 to 20% water, 60 to 75 percent aggregate, and 10 to 15% cement. Many concrete mixes may also have 5 to 8 percent additional entrained air.
Types of Concrete Mix Ratio
Nominal Concrete Mix Ratios
Nominal mixes are those with a fixed cement-to-aggregate ratio that guarantee adequate strength. Concrete nominal mix ratios are 1:2:4 for M15, 1:1.5:3 for M20, etc.
Standard Mixes Ratio
The minimum compressive strength has been included into numerous specifications of the nominal concrete mix. They are known as standard mixes. The concrete mixes are divided into several grades, including M10, M15, M20, M25, M30, M35, and M40, according to IS 456-2000.
High Strength Concrete Mix
High strength concrete mix can be produced using 400–450 kg of cement/cubic meter of concrete with a W/C ratio of 0.3 and cement, sand, and aggregate ratios of 1:1.5: 2.5. It has specified concrete strength.