Recycled Asphalt

[WILDWINGS27]

I am designing a parking lot and the contractor wants to use recycled asphalt. What are the negatives to using this? I assume that the parking lot may not last as long but are their any other concerns? If it matters, I live in the midwest with some pretty cold winters.

 

[Drumchaser]

We tried this a few years ago with regrettable results. We did not stabilize the subgrade and perhaps this would have helped. Our loads ( vehicles ) were dump trucks and highway equipment. The material we used was what we call millings or RAP.
If your p-lot is only temporary then maybe it will satisfy your needs.
I cannot comment on the freeze thaw aspect as our weather is mild compared to the midwest.

good luck

 

[darthsoilsguy2]

check out this link. look into what your local DOT is doing. they have to be the biggest consumer of the RAP product in your area.

http://www.tfhrc.gov/hnr20/recycle/waste/rap132.htm

 

[Hoagie]

My group doesn't specify the recycled asphalt as binder or wearing course. We use the milled AC as part of the base section.

 

[LCruiser]

We use RAP as a sort of enhanced base course, or mix it in with new HMA at a limited percentage. I think we max out at 15% unless it's fractionated, and then it can go up to 25%.

 

[WILDWINGS27]

Thanks for all your responses

 

[msucog]

http://www.arra.org/

http://www.cement.org