BORED PILING TECHNOLOGY
(Based on Marina Barrage Project experience)

 


Bentonite circulation system - schematic sketch

 


Bentonite circulation system - site layout


Polymer circulation system - site layout


Bentonite density test with cone and measuring cup (by measuring dripping time)


Rebar fabrication


Rebar cage with column start bar


Rebar spacer


Drive steel casing (about 15m deep)


Boring good soil using auger


Boring marine clay using cleaning bucket


Drill bit for the hard soil (from Sambo catalogue)


Rock chiesel (from Sambo catalogue)


Measure the depth of bored hole and get soil sample of the founding level


Erect rebar cage into bored hole


Join the rebar cage using clamp


Clamp close view


Tremie concreting - maintain a continuous embedment of tremie pipe in the concrete (at least 2m) as section of tremie pipe is removed

 

CROSS REFERENCE
Bored piling production rate