• A Study on the Change of Shear Strength of Coastal Muddy Sediment Due to the Mixing of Oyster shells with different Pyrolysis Temperature and Particle size

  • Hee-Eun Woo·IlwonJeong·In-CheolLee·KyunghoiKim*

  • Department of Ocean Engineering, Pukyong National University, Busan 48513, Korea

  • 굴 패각의 소성온도 및 입경에 따른 연안 점토질 퇴적물의 전단강도 변화에 관한 연구

  • 우희은·정일원·이인철·김경회*

  • 부경대학교 해양공학과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to investigate change of shear strength of coastal muddy sediment by mixing pretreated oyster shells with different pyrolysis temperatures and particle sizes, a vane shear test was carried out. The shear strength of the sediment with oyster shells pyrolyzed at 800oC was twice higher than that of the control, with a maximum shear strength of ca. 0.2 kPa. The Ca2+ concentration in the pore water was the highest at sediment with oyster shells pyrolyzed at 800oC with a concentration of ca. 790 mg/L. From the above results, it is concluded that the application of the oyster shells pyrolyzed at 800oC can affect the increase in shear strength of coastal sediments through the aggregation of clay particles and pozzolanic reactions with sediments.


Keywords: Coastal sediments, Shear strength, Oyster shells, Cations

This Article

  • 2021; 26(1): 17-23

    Published on Feb 28, 2021

  • 10.7857/JSGE.2021.26.1.017
  • Received on Nov 30, 2020
  • Revised on Dec 10, 2020
  • Accepted on Jan 22, 2021

Correspondence to

  • KyunghoiKim

  • Department of Ocean Engineering, Pukyong National University, Busan 48513, Korea

  • E-mail: hoikim@pknu.ac.kr