FIELD: construction.
SUBSTANCE: method includes mixing of bitumen and rubber crumb of tyre wastes, their temperature treatment and mixture plasticising. Bitumen and rubber crumb in the composition are used at the following ratio, wt %: rubber crumb - 13.0-31.0, bitumen - balance. At the same time rubber crumb is added into bitumen pre-heated up to 160°C in portions with mixing, besides, after loading of its last portion the mixture is mixed for around 10 minutes. Then, while the mixture is being mixed, it is treated with ultrasound, upon completion of which the mixture is mixed for around 10 minutes.
EFFECT: rubber and bitumen compositions have higher values of softening and brittleness temperatures preserved in severe climatic conditions under higher mechanical loads.
5 cl, 1 tbl, 8 ex
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