Mechanical properties of a carbonate sand from a dredged hydraulic fill
Mechanical properties of a carbonate sand from a dredged hydraulic fill
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DOI：
10.1680/jgeot.16.p.304
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发表时间：
2018-05-01
期刊：
影响因子：
5.8
通讯作者：
Dickenson, S.
中科院分区：
文献类型：
--
作者：
Giretti, D.;Fioravante, V.;Dickenson, S.
本文主要研究了一种可破碎的、未胶结的碳酸盐砂的性能，该砂从阿拉伯联合酋长国的一个人工岛中回收，用于海上石油生产。沙子是从近海海域疏浚的，通过水力放置在工程堤岸内，形成岛屿，并通过振冲加固。本文总结了综合实验室测试方案的结果，提供了一套碳酸盐砂的力学性能。实验室方案包括静态、循环和动态试验，其结果在临界状态土力学框架下解释，包括应力膨胀。该试验项目的结果有助于正在进行的碳酸盐砂在静态和循环加载条件下的行为研究。结果还与其他碳酸盐砂和硅质砂的选定数据进行了比较，并突出了可破碎的碳酸盐砂用作水力填充物的行为。
This paper focuses on the properties of a crushable, uncemented, carbonate sand, retrieved from an artificial island to be used for petroleum production offshore of the United Arab Emirates. The sand was dredged from an offshore borrow area, placed hydraulically within engineered bunds to create the island and densified by vibroflotation. The results of a comprehensive laboratory testing programme are summarised in this paper, providing a set of mechanical properties for carbonate sand. The laboratory programme included static, cyclic and dynamic tests, the results of which are interpreted in a critical state soil mechanics framework, including stress dilatancy. The results of this testing programme contribute to on-going research on the behaviour of carbonate sands under static and cyclic loading conditions. The results are also compared with selected data for other carbonate and siliceous sands, and highlight the behaviour of crushable, carbonate sands used as hydraulic fills.