Performance of marine clay stabilised with vacuum pressure: Based on Queensland experience

Indraratna, Buddhima; Rujikiatkamjorn, Cholachat; Baral, Pankaj; Ameratunga, Jayantha

doi:10.1016/j.jrmge.2018.11.002

Cited by 32 publications

(5 citation statements)

References 18 publications

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“…The addition of vacuum pressure increased undrained shear strength and resulted in relatively shorter preloading time due to the increase of horizontal coefficient of consolidation. Furthermore, the field monitoring at the Brisbane Port, Australia, confirmed that the PVD system subjected to vacuum combined surcharge preloading is an effective method for accelerating radial consolidation and controlling lateral displacement [50], [51].…”

Section: E Research Hotspotmentioning

confidence: 87%

Global Research Trends in Soft Soil Management for Infrastructure Development: Opportunities and Challenges

Sim,

Katman,

Baharuddin

et al. 2024

IEEE Access

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Soft soils present significant challenges to infrastructure development worldwide due to high compressibility, low shear strength and low permeability. Bibliometric analysis remains scarce in the soft soil management field, making it difficult to grasp global trends and contributions. This research addresses this gap by providing a novel and comprehensive bibliometric analysis of soft soil management literature to investigate the trend, opportunities and challenges. The analysis predominantly examines ground improvement methods based on 2,260 journal articles and proceeding papers from WOS core collection between 2013 and 2023 using CiteSpace. The analysis encompasses country distribution, authorship and cocited authors, cited journals, reference co-citations and identification of research hotspots and frontiers. Findings show a growing interest and increased research focus in soft soil management, with China emerging as a prominent contributor. Reference co-citation clustering analysis reveals two dominant research themes: ground improvement methods (geosynthetic-reinforced embankments and stone columns) and sustainable practices (reuse of waste materials). The emerging word analysis reveals an evolutionary trend from investigating innovative and sustainable techniques to shear strength and failure mechanisms. Recent studies focus on the use of vertical drains, deep mixing columns, chemical stabilization, and sustainable ground improvement strategies. Opportunities lie in sustainable ground improvement methods and novel sensing technologies. Key challenges include bearing capacity, settlement, and slope stability. The study highlights the need for more research into two other key areas such as geotechnical characterization and foundation design. Overall, this bibliometric review contributes to a more thorough understanding of soft soil management studies for researchers and practitioners.

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Section: E Research Hotspotmentioning

confidence: 87%

Global Research Trends in Soft Soil Management for Infrastructure Development: Opportunities and Challenges

Sim,

Katman,

Baharuddin

et al. 2024

IEEE Access

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“…Vacuum consolidation combined with PVDs is one of the most popular methods for soil improvement [4][5][6][7][8]. Different from fill preloading, vacuum preloading utilizes atmospheric pressure on an air-tight system installed in the field by applying vacuum inside the system [9].…”

Section: Methodsmentioning

confidence: 99%

Utilization of Dredged Mud in Land Reclamation: A Comparison Study of Several Soil Improvement Methods

Sengara

Bratanata²,

Krisnanto³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Utilization of dredged mud in land reclamation will become more applicable in the future due to the increase of the need for space and the rising cost of granular fill materials. Dredged mud mainly consists of soft clay and has very low bearing capacity and high compressibility. Therefore, soil improvement is urgently required. In this paper, the effectiveness of using dredged mud as the fill material in land reclamation was analyzed for a case study of land reclamation. The performance of several soil improvement methods in using such reclamation material was calculated and compared. The soil improvement methods considered in this study were prefabricated vertical drain (PVD) with vacuum preloading, cement mixed dredged mud, and rigid inclusion. The load transfer mechanism in each method was analyzed using analytical and numerical methods. In addition, an elementary cost analysis was performed to compare the cost of the methods based on Indonesian prices. It was found that for the considered case study, cement mixing achieved the highest bearing capacity with the shortest time but with the highest cost. For the same increase in bearing capacity, PVD with vacuum preloading provided the lowest cost. This study provides a preliminary step towards the implementation of effective soil improvement for land reclamation in Indonesia.

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“…Among them, vacuum preloading is widely used. It has been implemented in various projects, including the Tianjin Lingang Economic Zone in China [12], the expansion of Fisherman Island in Australia [13], and land reclamation in Singapore [14].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Factors Affecting Vacuum Formation and Drainage in the Siphon-Vacuum Drainage Method for Marine Reclamation

Shu,

Wang,

Chen

et al. 2024

JMSE

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Traditional drainage methods for marine reclamation typically consume large amounts of energy and have a negative environmental impact. The siphon-vacuum drainage method (SVD) automatically forms a vacuum and drains using less energy. It has significant potential for research and application. In this study, a theoretical model is used to calculate the vacuum formation process and drainage rate. Qualitative analysis and global sensitivity analysis were conducted to investigate the effect of various factors in the SVD on vacuum formation and drainage. The qualitative analysis suggests that modifying the length and diameter of the siphon pipe and the thickness of the sealing soil column to increase the siphon rate can improve the vacuum degree and drainage efficiency. Sobol global sensitivity analysis reveals that the sealing soil column thickness is the main factor affecting the vacuum, with a first-order sensitivity index accounting for up to 79.48%. The impact of cylinder diameter and the local resistance coefficient (0.43%) can be almost neglected. A fitting equation for estimating the maximum achievable vacuum is provided. Calculations show that the vacuum formed by the SVD can reach over 80 kPa. This work can help optimize SVD design and advance environmentally friendly marine reclamation projects.

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Performance of marine clay stabilised with vacuum pressure: Based on Queensland experience

Cited by 32 publications

References 18 publications

Global Research Trends in Soft Soil Management for Infrastructure Development: Opportunities and Challenges

Global Research Trends in Soft Soil Management for Infrastructure Development: Opportunities and Challenges

Utilization of Dredged Mud in Land Reclamation: A Comparison Study of Several Soil Improvement Methods

Analysis of Factors Affecting Vacuum Formation and Drainage in the Siphon-Vacuum Drainage Method for Marine Reclamation

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