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What is Concrete Mix Ratio?

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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

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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.

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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.

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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.


Concrete and cement are not the same because cement is a concrete component. Concrete comprises aggregates (such as sand, gravel, and crushed stone) and a paste made of cement and water. On the other hand, cement contains fine particles.

Ordinary Portland Cement (OPC) combines additives like fly ash, slag, or silica fumes to create blended cement. These mineral admixtures produce cement currently regarded as superior to regular cement. Two significant benefits of using the blended concrete mix are technical and environmental.

Four parts crushed rock, two parts sand, and one part cement are the most recommended combination for any concrete mix. The four-two-one combination has seven components. Conveniently, any range of scales can be used to mix the ratio when mixing concrete for buildings.