Abstract:
Vijaya Bhushan Rao, Author, BAUER International FZE, United Arab Emirates, +971 (56) 545 0821, vijay.bhushan@baueruae.ae
Jason Redgers, Contributor, BAUER International FZE, United Arab Emirates, +971 (56) 996 0403, Jason.Redgers@baueruae.ae
ABSTRACT
The Typical Vibrocompaction projects undertaken on the UAE reclamation Sands which are predominantly the crushable calcareous sands in the location of iconic Palm Jumeirah at Dubai often requires meeting the performance requirements of achieving a particular relative density and liquefaction mitigation to specified seismic parameters that are generally measured by a defined Cone Penetration Test, CPT target values, MPa at respective depth zones provided by client. Few such case studies are evaluated in this paper, where soil suitability for deep compaction by vibratory method was assessed first using the Massarsch, 1991 compactability chart on CPT data and then Vibrocompaction implemented. One such project called the Island Development required 17 to 23m depth of penetration only to treat the lower 5 to 6m of sand above rockhead as eventually the top 15m of sand will be further excavated to allow for the construction of basement. Pre and Post Compaction Cone Penetration Tests, CPTs, Site Trials undertaken in all cases to determine the extent of treatment as well as success of Vibrocompaction works.
Keywords: Reclamation Sands, Massarsch compactability chart, Vibrocompaction, Cone Penetration Tests