Experimental analysis of the cohesion-adhesion relation of cohesive soil

X. Chen, J. W. Van Den Broecke, G. Liu, G. Hong, S. A. Miedema

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Currently, a fundamental relation between cohesion and adhesion in cohesive soils has not been established. Yet, it is of great importance to get a better understanding of the relationship between cohesive and adhesive forces, because the large surfaces on dredging tools can generate a lot of resistance, meanwhile limiting the production for materials with increasing adhesion. Because the relationship is not exactly known, the adhesive strength of a clay is usually expressed as a fixed fraction of the cohesive strength, varying between 60% for hard clays and 100% for soft clays. Material tests of cohesive soil have been undertaken to detect the actual relation between the adhesion and cohesion of cohesive soil. The experimental results can directly help the implementation of the Delft sand, clay and rock cutting model, as a result the optimal cutting angle in dredging practice can be calculated. In this way, the designs of dredging tools are improved, which can help to increase the overall production rate in dredging operations. This paper gives detailed description of the experiment setup and results.

Original languageEnglish
Title of host publicationProceedings 22nd World Dredging Congress
Subtitle of host publicationWODCON 2019
PublisherChinese Dredging Association (CHIDA)
Pages155-166
Publication statusPublished - 2019
Event22nd World Dredging Congress and Exposition, WODCON 2019 - Shanghai, China
Duration: 22 Apr 201926 Apr 2019

Conference

Conference22nd World Dredging Congress and Exposition, WODCON 2019
Country/TerritoryChina
CityShanghai
Period22/04/1926/04/19

Keywords

  • Adhesion
  • Cohesion
  • Cohesive soil
  • Experiments

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