Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
(OP)
I am an entry level Civil Engineer EIT working as an inspector on a bridge. I am overseeing embankment construction and the contractor has hauled in large chunks of ODOT Item 301 Asphalt Base (3 feet in length, 1 foot thick on average) to use as fill material along with glacial till. The Ohio Department of Transportation spec book is a bit vague on the use of what I would consider "landfill material" in embankment construction. Specifically, it states that the RACP must be broken down small enough to be incorporated into 8" lifts.
My question is: What possible effect on embankment stability and quality does the use of this fill material have? I instructed the contractor to break the asphalt pieces into what I would consider within the limits of the ODOT spec. However, I'm sure that material like this has to have some effect on the mechanics of the embankment.
Thank you!
My question is: What possible effect on embankment stability and quality does the use of this fill material have? I instructed the contractor to break the asphalt pieces into what I would consider within the limits of the ODOT spec. However, I'm sure that material like this has to have some effect on the mechanics of the embankment.
Thank you!
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
I don't have full details, but beware!
f-d
ípapß gordo ainÆt no madre flaca!
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
Documenting compaction is a problem with the nuclear gauge and you cannot use the speedy for moisture content.
I think we have a research paper on this topic.
No opinion on its use in residential construction.
f-d
ípapß gordo ainÆt no madre flaca!
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
https://www.dot.state.oh.us/Divisions/Construction...
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
It is similar to when you have imported clay. Often when its excavated from a site it comes in massive clumps. contractors just spread it and compact it quickly without breaking it up in to smaller pieces which may make it difficult to achieve compaction levels.
Good luck.
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
http://rmrc.wisc.edu/wp-content/uploads/2012/12/Ed...
http://www.virginiadot.org/vtrc/main/online_report...
f-d
ípapß gordo ainÆt no madre flaca!
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
https://www.wbdg.org/FFC/DOD/UFC/ufc_3_250_07_2004...
See chapter 4. Appears that max. aggregate size should be 2 inches.
If you consider a lift thickness of 6 inches, the max. 2 inches for aggregate appears reasonable.
RE: Recycled Asphalt Concrete Pavement (RACP) in Bridge Embankment
f-d
ípapß gordo ainÆt no madre flaca!