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Abstract

Automobiles, when they are no longer useful, are flattened and shipped to an automotive shredder facility. At the shredder facility, while they are shredded to recover the ferrous and non-ferrous metals for recycling, a huge quantity of non-metallic residue commonly called Automotive Shredder Residue (ASR) is generated. Since ASR mostly contains plastic and rubber related materials, and addition of plastic and scrap rubber from waste tires as a road material has been proven to be effective in solving existing pavement related problems, attempts were made to examine the feasibility of ASR as a road material additive. As a part of this effort, compatibility and mechanical properties of ASR modified asphalt were studied. The asphalt was mixed with a requisite amount of ASR for one hour at 375°F. Glass transition temperature (T_g) and microstructure of ASR, asphalt and ASR modified as-phalt were examined to determine compatibility. Mechanical properties of ASR modified asphalt were studied by performing dynamic mechanical analysis. The photomicrographs and T_g of ASR modified asphalt demonstrated some compatibility between ASR and asphalt. Dynamic mechanical analysis indicated that rutting and aging properties of asphalt should improve with the addition of ASR.

Keywords

asphalt DSR Automotive Shredder Residue performance aged binder

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References

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Laboratory Performance of ASR Modified Asphalt Binders

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