Consolidation Curve and Rebound

[rockrlady]

I am having trouble finding any direct answers to this question: How can I correlate a consolidation curve to potential soil rebound? Context: for a wetland restoration, will there be any rebound at all of clayey soils (in this case a MH or CH) and can a consolidation curve show me this? And how?

 

[GeoPaveTraffic]

In theory, there is always rebound any time you remove soil from a site. However, in practice unless a great amount of soil is removed the amount of rebound is very small.

The consolidation curve provides the answer to the amount of rebound that will theoretically occur. Use the rebound portion of the curve, or the portion of the curve before the preconsolidation pressure if no rebound was performed, to calculate the theoretical amount of rebound. Don't be surprised if the rebound in the field appears to be zero. This is often the case because the rebound is happening while the excavation is going on, therefore the contractor just keeps digging. This is normally not a problem since the amount of rebound is small. However, I have heard of contractors getting additional money to cover the extra excavation in large deep excavations.

With all of that said, I'm not sure how this comes into play with a wet land restoration.