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Straight asphalt is a bituminous substance obtained by removing light components from crude oil using atmospheric and vacuum distillation units.
Modified asphalt is a material in which thermoplastic elastomers , etc., are uniformly dispersed and dissolved into asphalt to improve strength and durability.
Asphalt emulsion is a brownish liquid in which asphalt is made into small particles and dispersed in water, and it is used on roads by spraying or mixing with stones at normal temperature.
Asphalt mixture is a material in which coarse aggregate, fine aggregate, filler, and asphalt are mixed together at a specified ratio.
