Invention Grant
US08663378B2 Asphalt mix workable at ambient temperatures with only biodegradable solvents and method of manufacturing the same 有权
沥青混合物在环境温度下仅可生物降解的溶剂及其制造方法

Asphalt mix workable at ambient temperatures with only biodegradable solvents and method of manufacturing the same
Abstract:
A method of manufacturing an asphalt mix comprising: heating aggregate; introducing RAP to the aggregate; dry mixing the RAP and aggregate; forming a coating of AC on all aggregate during the step of dry mixing by extending the length in time of the dry mixing step; separately blending AC, biodegradable solvents, and anti-stripping agent to produce a blend; and wet mixing the blend into the RAP and aggregate mix. The biodegradable solvents are capable of making the asphalt mix workable at ambient temperatures and comprise pine extract and biodiesel. The length of the dry mixing is extended to at least about 35 seconds. The aggregate comprises coarse and fine virgin aggregate. RAP is about 40% of the final product. The asphalt mix is stockpiled and bagged. The method further comprises manipulating encrusted material on the outside of the stockpiled cold asphalt mix back into the stockpile.
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