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Types of Concrete


There are different types of concrete are manufactured today for different needs and applications. The formulas and ingredients vary to suite the condition and preference of various construction designs. Today we are discussing about the different types of concrete that are commonly used.
Normal or Regular Concrete
The concrete in which common ingredients are aggregate, water, cement is known as normal or regular concrete. It is also called normal weight concrete or normal strength concrete. It has a setting time of thirty to ninety minutes depending upon moisture in atmosphere and the fineness of cement.
The development of the strength starts after seven days the common strength values is 10 MPa (1450 psi) to 40 MPa (5800 psi). At about 28 days 75 - 80% of the total strength is attained. Almost at 90 days 95% of the strength is achieved.
Its density ranges from 140 pcf to 175 pcf and is strong in compression and weak in tension.
High strength concrete
It posses compressive strength that is higher than 6 thousand pounds per square inch. High strength concrete is made by lowering the water cement (W/C) ratio to 0.35 or lower. Silica fume is added to prevent the formation of free calcium hydroxide crystals in the cement, which might reduce the strength at the cement aggregate bond. Low w/c ratios and the use of silica fume make concrete mixes significantly less workable, which is particularly likely to be a problem in high-strength concrete applications where dense rebar cages are likely to be used. To compensate for the reduced workability in the high strength concrete mix, super plasticizers are commonly added to high-strength mixtures.
Aggregate must be selected carefully for high strength mixes, as weaker aggregates may not be strong enough to resist the loads imposed on the concrete and cause failure to start in the aggregate.
High Performance Concrete
It refers to a newly developed concrete mix that has properties that are a notch higher compared to regular concrete mixes. It includes High strength, High workability, High durability, Ease of placement, Compaction without segregation, Toughness ,Volume stability, Long life in severe environments.
Shortcrete Concrete
It refers to the mix that uses compressed air to shoot concrete into a frame or structure. This type is preferred for works that are needed to be applied overhead or on vertical surfaces. This is used for repairs of bridges, dams, pools and other applications that need the concrete to be applied without forming.
Pervious concrete

It refers to a type of concrete that contains a network of holes or voids, to allow air or water to move through the concrete. This allows water to drain naturally through it, and can both remove the normal surface water drainage infrastructure, and allow replenishment of groundwater when conventional concrete does not. It is formed by leaving out some or the entire fine aggregate, the remaining large aggregate then is bound by a relatively small amount of Portland cement.
CVC ReadyMix ,the perfect ready mix concrete.
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Location: Kochi, Kerala, India

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