Classification and Engineering Properties of Dredged Material.

Abstract

Data pertaining to the classification and engineering properties of dredged material are presented. Data were acquired from Corps of Engineers (CE) Districts, from published reports, and a program of sampling and testing of material to be dredged. Standard soil properties tests were used to determine the classification and engineering properties of dredged material samples. Sampling, test specimen preparation, and test descriptions are presented. Samples were classified in accordance with each of four standard soil classification systems. The engineering properties of ten samples of compacted dredged material were determined, and the results show that dewatered dredged material has properties comparable to those of similar types of soil. The engineering properties of dredged material in some containment areas are presented, showing the variation of properties with depth, time, and distance from the dredge discharge pipe. The study concludes that dewatered dredged material is a soil, can be analyzed as a soil, and can be used as a soil. The use of soil mechanics tests and the comparison between soil and dredgedd material are presented to encourage the productive use of dredged material as a natural resource in urban and other development projects, especially in areas where landfill needs can be met by available dredge material. (Author)