There are different kinds of Asphalt concrete that are used for the construction of roads , highways , pavements are –
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Hot Mix Asphalt Concrete -Hot mix Asphalt is heated to a temperature of 160 degree C to reduce the viscosity of Asphalt and reduce the moisture present in the aggregate .This mix is used in high traffic areas like airports , high traffic pavements and highways. Paving with this mixture is recommended in the summer months.
Warm Mix Asphalt Concrete -This includes addition of zeolites, wax and emulsions to the asphalt. This lowers down the temperatures to create the asphalt mix thus resulting in less fuel consumption and less fumes.
Cold Mix Asphalt Concrete -It is used in low traffic areas and is not very durable. The asphalt is emulsified in soapy water before mixing with the aggregate.
Cut Back Asphalt Concrete -This material is not environmental friendly. The asphalt is mixed with kerosene before adding aggregate. Lot of vapors are released while laying the asphalt resulting in air pollution.
Mastic Asphalt Concrete -It is mainly used in roofing, flooring and paving. It has a low content of bitumen and is a very good water proofing material. Mastic asphalt can be used as a floor coating.