Backfill layers - bottom the worse (DCP)?
Backfill layers - bottom the worse (DCP)?
(OP)
Hi Guys
it is me again with some backfill problems. When I backfill a column base and compack every layer (250mm) must the bottom layer not be the strongest? the best compacted? It gets all the compactions from above and the weight of all the ground above as well.
Have a look on the attached grafik. Strange or?
What gives me actually the CBR % value?
BauTomTom
it is me again with some backfill problems. When I backfill a column base and compack every layer (250mm) must the bottom layer not be the strongest? the best compacted? It gets all the compactions from above and the weight of all the ground above as well.
Have a look on the attached grafik. Strange or?
What gives me actually the CBR % value?
BauTomTom






RE: Backfill layers - bottom the worse (DCP)?
RE: Backfill layers - bottom the worse (DCP)?
As ishvaaag noted, upper layers are often chosen for stiffness and bridging capability as much as for comparative compaction and stability.
Also, keep in mind that a DCP does not measure stability nor compaction as isolated parameters...it only measures a resistance to penetration, which while related to compaction, is not in itself a measure of compaction....it is more closely related to a measure of stability (such as the CBR).
Variable correlation CBR values with depth from a DCP do not surprise me.
RE: Backfill layers - bottom the worse (DCP)?
ok it makes sensse but still I wouldnt aspect such an zigzag graph my a compacted ground in each layer
and how can I visualise the % of the CBR?
Somehow have a problem with it
TomTom
RE: Backfill layers - bottom the worse (DCP)?
RE: Backfill layers - bottom the worse (DCP)?
RE: Backfill layers - bottom the worse (DCP)?
and where can I get this article?
TomTom
RE: Backfill layers - bottom the worse (DCP)?