True, but not if you have the larger 8", 10" and 12" cobbles in a 12" lift. The compaction roller can bridge from one rock to the other and leave the soil in between uncompacted. There is also the concern that the nuclear densities are providing skewed results from larger rocks just below the...
I have a project going in where the contractor is placing onsite fill material for a permanent quarry haul road. Unfortunately the contract and specifications do not limit the particle size (usually taken as about 3"). The material is generally very good, but has quite a few cobbles in it...
