For rubber powder, I believe that many consumers should be very familiar with it, then, for crumb rubber modified asphalt technology? We should not be very clear now, yes, like crumb rubber modified asphalt technology, is rarely seen in general, the following, we will look at it together. First, the crumb rubber particle size choices: powder particle size is generally 20 to 40 mesh is appropriate, the quality of the powder should be consistent with the standard, and its natural rubber hydrocarbon content should be greater than 30%. Crumb rubber at high temperature (30% below 40 mesh, by mixing with asphalt, swelling after high shear thinning shear milling machines, powder can be fully swelling in the asphalt at high temperatures, in order to fully play a role in powder modified asphalt for the two, crumb rubber incorporation of options: adding a reasonable amount of crumb rubber main consideration the following aspects: a) a rubber modified asphalt road usage. b) processing, transportation, paving performance. C) processing costs. By constantly testing and production practices found: three, on compound modified powder: waste rubber powder is broken by the mill reticulate structure, a large number of molecules produced by surface debris particles were oval, and is a kind of rubber , carbon black, softener and a vulcanization accelerator agent consisting of a variety of materials containing a crosslinked structure material. With asphalt due to the different surface properties, so that compatibility therebetween is poor, the powder is difficult to form directly incorporated into asphalt better adhesion interface; prone to segregation or precipitation; therefore with a certain method of gum powder surface modification, prompting interface and other powder and asphalt polymer materials, and to improve the compatibility of crumb rubber and asphalt.

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