Estimation of Pre-Compression Parameters in the Acceleration of Consolidation Settlement
American Journal of Civil Engineering
Volume 2, Issue 3, May 2014, Pages: 68-73
Accepted: Apr. 28, 2014; Published: May 10, 2014
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Authors
Yaw Adubofour Tuffour, Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
Mark Adom-Asamoah, Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Abstract
Pre-compression by preloading is used to accelerate the consolidation settlement of a site ahead of construction so that post-construction settlement would be minimal. The principal aim of the technique is to remove the primary consolidation settlement anticipated under the proposed load with or without partial compensation for secondary compression so that post-construction settlement would consist of a small re-compression and secondary compression. In this paper, the scope of pre-compression is expanded to include partial removal of primary consolidation as a possible settlement management option. Modifications and simplifications are introduced into parameter estimation for design to deal with pre-compressions intended to remove any degree of the primary consolidation and those that go beyond the primary consolidation stage. This provides foundation engineers the flexibility to evaluate different pre-compression load and duration options under different settlement regimes and their implications. A numerical example is used to demonstrate and verify the modifications.
Keywords
Pre-Compression, Primary Consolidation, Settlement, Surcharge Load
To cite this article
Yaw Adubofour Tuffour, Mark Adom-Asamoah, Estimation of Pre-Compression Parameters in the Acceleration of Consolidation Settlement, American Journal of Civil Engineering. Vol. 2, No. 3, 2014, pp. 68-73. doi: 10.11648/j.ajce.20140203.12
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