Staged Construction of Embankment

[qhtony]

Hi guys, recently having a problem with staged constructions of high fill embankment. The embankment constructions were done in 2 stages to allow alternating traffic (i.e. stage 1 embankment constructed on one half of the road and then stage 2 on the other half of the road, following the completion of the stage 1).

However, cracking problems (or differential settlement) occurred between the interface of stage 1 and stage 2 embankments, which resulted in a weak zone in between. And I think this is mainly due to the different compaction levels applied for stage 1 and 2 (maybe the contractor did not compact the fill materials property in stage 1). Anyway, they are fixing the problem by applying reinforced fill and geogrid.

My question is: is this problem only related to improper compaction during the construction or there could've been some construction techniques need to be applied to make sure the appropriate joining of embankments done in different stages?

I hope ppl can understand what I'm trying to say. Cheers.

 

[qhtony]

Thanks for your advice, Drumchaser. I wonder if you have a set of specification handy for the type of works you did in your area?

Cheers,

 

[Drumchaser]

ghtony


Our stnd. drawings and spec.s are proprietary. I would suggest you contact a US DOT (state or Fed. level) and review there standards and spec.s

The walls I have referred to have been around for quite some time.

Have you contacted the manufacturer and or designer of the system you have installed?

I would be interested in what they have to say in the matter.