Settlement of Peats and Organic Soils

by Tuncer B. Edil, (M.ASCE), Univ of Wisconsin-Madison, Madison, United States,
Evert J. den Haan, Univ of Wisconsin-Madison, Madison, United States,

Document Type: Proceeding Paper

Part of: Vertical and Horizontal Deformations of Foundations and Embankments


New advances in investigation of settlement of peats and organic soils and issues related to construction over such soft ground are presented. Peats and organic soils are well known for their high compressibility and long term settlement. In many cases, the majority of settlement results from creep at constant vertical effective stress. Extensive studies of this creep behavior have been performed in recent years, resulting in important advances in our understanding and formulation of it. Laboratory and field evidence with regard to the one-dimensional compression behavior of peat deposits and the recent developments in formulation of peat compression are presented. The issues concerning the classification of peats and the experience in dealing with practical problems encountered in construction over peat are discussed.

Subject Headings: Soil settlement | Soil compression | Soft soils | Compressive strength | Organic matter | Soil stress | Creep | Soil mechanics

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