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    The Application of Dynamic Compaction on Marjan Island

    189869_74203_72270.pdf (1.372Mb)
    Access Status
    Open access
    Authors
    Hamidi, Babak
    Nikraz, Hamid
    Varaksin, Serge
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Hamidi, Babak and Nikraz, Hamid and Varaksin, Serge. 2012. The Application of Dynamic Compaction on Marjan Island, in G Narsilio, A Arulrajah, and J Kodikara (ed), Proceedings of the 11th Australia - New Zealand Conference on Geomechanics (ANZ 2012), Jul 15 2012, pp. 1202-1207. Melbourne, Vic.: The Australian Geomechanical Society and New Zealand Geotechnical Society.
    Source Title
    Proceedings of the 11th Australia - New Zealand Conference on Geomechanics (ANZ 2012)
    Source Conference
    Proceedings of the 11th Australia - New Zealand Conference on Geomechanics (ANZ 2012)
    ISBN
    978-0-646-54301-7
    URI
    http://hdl.handle.net/20.500.11937/29184
    Collection
    • Curtin Research Publications
    Abstract

    Marjan Island is 2.7 million m2 of development located 27 km southwest of Ras Al Khaimah in the United Arab Emirates. This project has been reclaimed from the Persian Gulf by tipping sand into the sea. Geotechnical investigations indicated that the upper 7 m of ground was composed of very loose to medium dense silty sand interbedded with layers of boulders at different depths. SPT blow counts were recorded to be as low as 4 and Menard Pressuremeter Test (PMT) limit pressure was as low as 70 kPa. Fines content was from 13 to 30%. Preliminary calculations suggested that the in-situ ground conditions could not satisfy the island’s main road’s settlement criteria and that ground improvement was required. Thus, 198,000 m2 of the reclamation was treatment by Dynamic Compaction. Pounders weighing up to 20 tons were dropped from 20 m to compact the loose soil. 32 PMT were carried out after ground improvement to verify the achievements. These tests were able to demonstrate that acceptance criteria was readily achieved and that on average the soil’s modulus of deformation increased by more than 400%.

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