Process for preparing a binder for surfacing roadways of bitumen

Details Process for preparing a binder for surfacing roadways of bitumen Process for preparing a binder for surfacing roadways of bitumen

1989-02-22

1991-02-12

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 68, 524 71, C08L 700, C08L 900, C08L 9500

Patent

active

049924923

ABSTRACT:
The invention relates to a process for producing a binder based on bitumen and rubber powder, and comprising as an additive a heavy oil and also a synthetic elastomer. The constituents of the binder are mixed intimately to obtain an initial mixture at a temperature of between 175.degree. and 185.degree. C.; this temperature is maintained with agitation for around two hours, then the temperature of the mixture is lowered by 15.degree. to 20.degree. C. and the binder thus obtained can be kept for up to 10 days without any notable change in its properties.

REFERENCES:
patent: 4068023 (1978-01-01), Nielsen et al.
patent: 4085078 (1978-04-01), McDonald
patent: 4166049 (1979-08-01), Huff
patent: 4250067 (1981-02-01), Bresson
patent: 4358554 (1982-11-01), Yan et al.

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