the classification of fill material is A-1-b (thickness of the layer is 10 inch).
a modified Proctor is our method .
the moisture content at the start of compaction is 7-9.5%.
type of compaction equipment is roller 25 ton .
type of soil is below this layer in the range of 100 and more...
i work in project of construction building, we have earth work and back fill .
we are facing problem in compaction of backfill ,we can not get 95% or over in first layer although we had checked in all sides of compaction operation many times ,including, porctor & compaction test .
NOTE ...
is proctor test only applied on fill material ? or may it applied on natural ground too ?
i mean it do usually comparison between field density and lab density for natural ground to check the compacted .
i notice the compaction of base course above 100% relative to maximum density in the proctor test ,Although it's same material .
is that normal or not ?
& why ?
