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Evaluation of Recycled Components in Stone Matrix Asphalt Mixes

项目名称：	Evaluation of Recycled Components in Stone Matrix Asphalt Mixes
摘要：	Stone matrix asphalt (SMA), also called stone mastic asphalt, is a durable, rut-resisting wearing course employing a gap-graded aggregate structure and thick modified asphalt binder, typically with higher asphalt content and fibers. It has improved deformation resistance and durability due to the stone-on-stone structure of the mix. Recycled asphalt pavement (RAP), also called reclaimed asphalt pavement, is previously laid pavement that has been removed and reprocessed. When properly crushed and screened, RAP consists of high-quality, well-graded aggregates coated by asphalt cement. Recycled (or reclaimed) asphalt shingles (RAS) is the reprocessed byproduct of tear-off sheets of roofing shingles. These reclaimed products, along with other alternatives like select plastic wastes, processed tire rubber, and other viable recycled material sources can potentially provide a “win-win” in identifying an end-use for a waste stream and reducing material costs for pavement. Missouri Department of Transportation (MoDOT) has employed the use of RAP and RAS in conventional hot mix asphalt pavements for some time now, along with using the two in SMAs, albeit in limited quantity. This project aims to focus in on the optimal contents for various recyclable materials to be used in SMA mixes.
状态：	Active
资金：	320000
资助组织：	Missouri Department of Transportation
项目负责人：	Martin, Ryan W.
执行机构：	Missouri Center for Transportation Innovation
开始时间：	20200727
预计完成日期：	20221101
主题领域：	Highways；Materials