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ORIGINAL RESEARCH article

Front. Mar. Sci.
Sec. Marine Biogeochemistry
Volume 11 - 2024 | doi: 10.3389/fmars.2024.1474889

Development patterns of the dynamic elastic modulus of saturated coral sand under different drainage conditions

Provisionally accepted
Ruirong Zhou Ruirong Zhou 1,2Zhilei Huo Zhilei Huo 3Qifei Liu Qifei Liu 2*Qi Wu Qi Wu 2
  • 1 Sanjiang University, Nanjing, Jiangsu Province, China
  • 2 Nanjing Tech University, Nanjing, Jiangsu Province, China
  • 3 China Nuclear Power Engineering Co Ltd, Beijing, Beijing, China

The final, formatted version of the article will be published soon.

    The significant influence of non-plastic fines content (FC) and relative density (Dr) on dynamic elastic modulus (E) of saturated coral sand has been evaluated by a series of cyclic triaxial drainage tests. The results show that the dynamic elastic modulus increases rapidly at the beginning of loading; then the growth slows down and finally stabilizes. In general, the development of E is influenced collectively by FC, Dr and cyclic stress ratio (CSR). The initial dynamic elastic modulus Ed-1 and steady-state dynamic elastic modulus Ed-s increase with the increase of Dr, and decrease as FC increases. The linear fitting equations are given by introducing the equivalent skeleton void ratio esk * . Furthermore, the relative dynamic elastic modulus Er is defined as the ratio of Ed-N to Ed-s, and the prediction equation for Er was developed to provide a basis for the engineering mechanical parameters of coral sands under long-term loads.

    Keywords: Saturated coral sand, dynamic elastic modulus, Relative density, Equivalent skeleton void ratio, cyclic triaxial drainage test

    Received: 05 Aug 2024; Accepted: 07 Oct 2024.

    Copyright: © 2024 Zhou, Huo, Liu and Wu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Qifei Liu, Nanjing Tech University, Nanjing, 211816, Jiangsu Province, China

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