Effect of water content on lime additive content in vacuum preloading with PVDs. Issue 3 (4th March 2021)

• Record Type: Journal Article
• Authors: Zhu, Xiaoxiao; Anda, Rila; Gao, Shihu; Yuan, Guohui; Hai, Jun; Ye, Qiang
• Is Part Of: Marine georesources & geotechnology. Volume 39:Issue 3(2021)
• Page Start: 333
• Page End: 342
• Publication Date: 2021-03-04
• Subjects: Dredged slurry -- flocculation -- optimum water content -- hydrated lime -- vacuum preloading; Marine mineral resources -- Periodicals; 551.46
• DOI: 10.1080/1064119X.2019.1699981
• Languages: English
• ISSNs: 1064-119X

Abstract

Abstract: Dredged slurry is composed of a great quantity of fine soil particles, which accumulate around prefabricated vertical drains during vacuum preloading. The addition of hydrated lime as a flocculent can improve the permeability and vane shear strength of dredged slurry. A series of experiments showed that lime exists in the lime modification optimum as a flocculent. This study was aimed at analyzing the relationship between a given amount of lime additive and different water contents according to lime flocculation combined with a vacuum preloading test. For this, parameters, including the pore water pressure, discharged water, post-test water content, and vane shear strength, were monitored. Based on a given amount of lime additive in optimum water content, a function was derived, which could provide theoretical guidance for similar studies in the future.