发明名称 |
Wet Process for Recycling Asphalt Shingle in Asphalt Binder |
摘要 |
A new method is disclosed for recycling waste asphalt shingles in hot mix asphalt, i.e. asphalt pavement construction. Ground asphalt shingles are treated as a binder component instead of as an aggregate component. The recycled asphalt shingles that are blended with virgin binder in a wet process act both as a partial binder replacement and as a binder extender due to the presence of fillers, rubber, and fibers in the processed material. |
申请公布号 |
US2014331897(A1) |
申请公布日期 |
2014.11.13 |
申请号 |
US201313987325 |
申请日期 |
2013.03.05 |
申请人 |
Elseifi Mostafa A. |
发明人 |
Elseifi Mostafa A. |
分类号 |
C08L95/00 |
主分类号 |
C08L95/00 |
代理机构 |
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代理人 |
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主权项 |
1. A process for producing hot mix asphalt from recycled, asphalt-containing roofing shingles; asphalt binder; and aggregate; said process comprising the steps of:
(a) grinding the shingles to a powder, such that at least 80% by mass of the ground shingles pass a 200 mesh sieve; (b) heating the asphalt binder to 170 to 180 degrees Celsius; (c) blending the ground shingles with the heated asphalt binder; wherein the ground shingles are unheated immediately prior to said blending step; wherein no aggregate is included with the ground shingles and asphalt binder during said blending step; and wherein said blending step continues until substantially all asphalt from the ground shingles is melted and blended with asphalt from the asphalt binder; and (d) mixing the melted blend of ground shingles and asphalt binder from step (c) with aggregate to produce hot mix asphalt. |
地址 |
Baton Rouge LA US |