All time growing requirements for products containing petroleum bitumens especially paving bitumen pavements concerning a strength and load resistance and atmospheric conditions. Under this circumstances there is necessity for systematical estimation of bitumen’s properties and group of activities to improve their useful properties e.g. based on modification (bitumens mixtures and compositions with polymers). Among other things we should strive for increase bitumens crack resistance in low temperatures, fatigue life and decrease their durable deformability. The thermoplastic elastomers like styrene copolymers, e.g. styrene-butadiene-styrene, play a special role in paving bitumen modification.
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