Permeability of Aggregate Base Course Stone
Permeability of Aggregate Base Course Stone
(OP)
Does anyone have information on the permeability of Aggregate Base Course Stone? We are in the process of running a constant head test for a specimen set up at 95 percent of Standard Proctor compaction. Any information would be helpful. Thanks.





RE: Permeability of Aggregate Base Course Stone
Alternately, are you referring to something with out any fines - something more like #57 aggregate?
f-d
¡papá gordo ain't no madre flaca!
RE: Permeability of Aggregate Base Course Stone
We generally like to see base courses with non-plastic, low permeability as moisture gain tends to lower stability.
If drainage is so poor that you need significant permeation of the base, then you have more problems than just permeability.
RE: Permeability of Aggregate Base Course Stone
We are analyzing a situation where the primarily spillway pipe through an embankment dam was bedded on a 3 to 4 feet thick layer of ABC stone. The embankment dam is mostly a clayey SILT and silty CLAY soil. Pressure head is approximately 10 feet. The embankment dam forms a permanent detention pond for a residential development. Seepage loss is critical to the water balance of the dam.
The gradation (per NCDOT standards) is as follows:
Nominal Aggregate size is 25.0 mm.
37.5 mm sieve 100% passing
25.0 mm sieve 90-100% passing
12.5 mm sieve 90% passing
2.36 mm sieve 23-49% passing
.075 mm sieve 3-8% passing
RE: Permeability of Aggregate Base Course Stone
RE: Permeability of Aggregate Base Course Stone
RE: Permeability of Aggregate Base Course Stone