Implementing Recycled Unbound Materials during Pvmt Construction
Existing national, state, and MnDOT policies encourage the responsible use of recycle materials during pavement design and construction. MnDOT led a transportation pooled fund (TPF) project, which was created to resolve uncertainty and facilitate greater acceptance of recycled materials during pavement design and construction. That TPF project “TPF-5(129) Recycled Unbound Materials, Contract No. 89264, Work Order ...more »
Existing national, state, and MnDOT policies encourage the responsible use of recycle materials during pavement design and construction.
MnDOT led a transportation pooled fund (TPF) project, which was created to resolve uncertainty and facilitate greater acceptance of recycled materials during pavement design and construction. That TPF project “TPF-5(129) Recycled Unbound Materials, Contract No. 89264, Work Order No. 2” makes the following conclusion. “Recycled asphalt pavement (RAP_ and recycled concrete aggregate (RCA_ pass all necessary standards for being a suitable base course material. They are structurally and mechanically comparable, if not superior, to many natural aggregates. Resilient moduli of RAP and RCA are higher than the natural aggregates used as a control material, hydraulic properties are similar if not superior to that of natural aggregate, and they withstand the extreme effects of climate very similarly as natural aggregate. It is noted, however, that some RAP may be sensitive to temperature change that may lead to rutting. This aspect needs to be considered in design.
Derek Tompkins, Craig Taylor, Mark Maloney, John Siekmeier, Roger Olson, Mihai Marasteanu, and Mike Sheehan prioritized this ida at the CTS Research Council. Mike or Mark could be a potential LRRB Champion.
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