15 Types of Concrete in Construction you should not forget

 Concrete that is entrained by air is a special type of concrete made of cement, water, aggregates, and air entraining agents. Under freezing temperatures, liquid water penetrated into the cement structure will freeze to form solid ice. There is a greater internal pressure in solid ice than in liquid water because the solid ice occupies a larger volume.

This process is called the freeze thaw cycle, which results in cracks to release pressure. The use of air entraining agents like wood resins, hydrogen peroxide, aluminum powder and others can prevent this.

Air Entrained Concrete

In cold weather regions that are susceptible to freeze thaw cycles, air entraining concrete can also be made using air entraining cement. Artificial air pockets will form inside the mix as a result of these air entraining agents. Air entraining agents can create artificial air pockets to compensate for the extra space that ice requires.

It is also possible to add air entraining admixtures to ordinary cement to achieve the same results. In this way, the structure becomes more durable, but the concrete's strength is obviously diminished by the air pockets.

Self Compacting Concrete

Generally, self compacting concrete is made of cement, fine aggregates, and coarse aggregates, chemical admixtures to make it more workable, flow-able, and rheological, and mineral admixtures that improve the workability.

Due to its high workability and lack of need for extra compaction, self compacting concrete is also called zero slump concrete. The process is used in congested reinforcements where it is quite difficult to complete the process.

Concrete can be made flow-able with a variety of viscosity modifying agents. Viscosity modifying agents include sika-plast, retarders, air entraining agents, and very fine mineral admixtures.

Shotcrete

Using compressed air, Shotcrete is a type of sprayed concrete that sprays mortar or small aggregates to a location. With Shotcrete, large amounts of pre-mixed wet mortar or concrete are sprayed into a large area through nozzles.

Guniting Concrete

The procedure for Guniting is very similar to Shotcrete, but uses a dry mix instead of the wet one. The method involves spraying concrete onto surfaces using compressed air. Unlike shotcreting, Guniting utilizes a dry mix which is uniformly mixed with water near the nozzle and discharged toward the receiving surface. The bond strength of this process is greater than that of Shotcrete.

Pumped Concrete

An important characteristic of pumped concrete is that it can be pumped easily. Concrete is made more workable, flow-able, and pump-able by adding additives.

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