Options to remedy low MC backfill
Options to remedy low MC backfill
(OP)
Our contractor completed a small pipeline project, backfilling the trench with a predominantly sand material which also included some stone as well. Upon having several compaction tests taken, the material was seen to fall in the 90 to 95 percent range, failing our required 95% modified min, which I believe was due to a very low MC.
Aside from tearing up the backfill, replacing with suitable material, and re-compacting, are there any other options? Would flooding the trench cause more harm than good?
Aside from tearing up the backfill, replacing with suitable material, and re-compacting, are there any other options? Would flooding the trench cause more harm than good?





RE: Options to remedy low MC backfill
RE: Options to remedy low MC backfill
The trench is located within the road right of way which is to be paved in asphalt. The testing tech took a proctor from the stockpile for comparison, so we believe the material in the field matches closely to the proctor. Some of the results were in the mid 80%s as well.
RE: Options to remedy low MC backfill
What are your Proctor values and what are your field moist contents?
If you are using a nuclear density gauge, make sure your technician knows to compensate for the trench sides. Also, make sure you do a moisture content by a supplementary method as a check against the nuke.
RE: Options to remedy low MC backfill