Fill Materials Suitablity
Fill Materials Suitablity
(OP)
Can GW-GM or GW-GC materials be used for a structural fill under foundations. The materials are comprised of 63% gravel (angular), 26% sand and 11% fines? This is for a two-level building construction and if an be used we do not need to import crushed aggregate. Thank you for your feedback.





RE: Fill Materials Suitablity
This would be a good bearing material for spread footings, especially with a few feet of embedment. If the underlying soil is water-sensitive, you need to know about the permeability or cover it with impermeable soil and grade for good drainage.
RE: Fill Materials Suitablity
RE: Fill Materials Suitablity
Dik
RE: Fill Materials Suitablity
How can we reduce the fine contents from the materials in the field. Does it mean to wash them??
Thank for all the useful comments.
RE: Fill Materials Suitablity
Dik
RE: Fill Materials Suitablity
RE: Fill Materials Suitablity
RE: Fill Materials Suitablity
make sure you have the appropriate Proctor when you test compaction. The presence of oversize materials should require a Method C Proctor and if there is oversize beying the Method C, you'll need an oversize correction for the lab curve. During placement you'll also need a sieve in the field to assess whether the actual presence of oversize material is consistent with the lab curve. If not, you'll need to do an oversize corrction for the field test.
I'd think this is fine material. That said compaction control with oversize corrections can lead to problems if the well-intentioned are not experienced.
f-d
¡papá gordo ain't no madre flaca!