GEOTEXTILE GROUT BAGS & FABRIC
FORMWORK
The Australian Boom and Baffle Co
specialises in the design and fabrication of flexible
geo-textile grout and gravel bags and inflatable fabric
formwork. These are used
in applications both above ground and underwater and are
customised to suit specific applications.
Our in house testing capacity and
high strength geo-textile fabrication equipment enables
us to progressively test to agreed design criteria
throughout the manufacturing process. We regularly use
geo-grid internal supports to hold the shape of the
structure whilst allowing grout to flow freely through
the bags.
Our specialist products include:
 | Port construction counterfort unit temporary works
all welded infill panels |
| Port construction counterfort unit vertical joint locking bags |
| Underbed stabilisation and filling
for precast shoreline seawall segments |
| Gravel bags for locking structures
together which are then liquid grout filled |
| Undercut infill bags |
| Bifurcation unit anchor bags |
| Grout inflatable riser footing
doughnuts |
| Pipe saddle/anchor bags (up to
2.4m diameter pipe) |
| Segmented corner/joining block
infill bags |
| Shaped mattress supports |
| Underwater installed scour
protection mattresses |
| Pipe anchor and cover pads |
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Product
Examples: Mass Anchoring Underwater Pipe
Saddles |
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We are able to
configure underwater pipe saddles specially to
clients specifications to provide both support and
mass anchoring.
Once deployed
pipes can be secured to the saddles using heavy
duty stainless steel straps.
In the example
pictured opposite saddles were constructed
for 2 of 1800mm cement coated pipes.
As the
pictured grout bags are to be filled underwater, a
pre-deployment trial was undertaken on land to
verify bag formation and strength.
In this
example they were filled with 25 mpa block mix
with 10mm aggregate through 80mm fill pipe. Each
bag holds approximately 7.5 cubic metres.
During the dry
trial divers were walked through the installation
procedure and an appropriate safe work method
statement was prepared for their installation. |
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| Bags
constructed to enable divers to haul under pipes
which are held in a cradle and attach to pipes in
1 knot of current |
To
ensure bag forms to required footprint plastic
conduit is used by the divers to peg the bags to
the soft bottom |
Progressive
filling is undertaken to ensure even distribution
of grout |
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| Fill
relief ports are located in each major segment of
bag to ensure that each section is adequately
filled |
In
this shore trial two saddles were installed to
ascertain potential slump after removal of
supporting cradle |
As
filling is undertaken the supporting straps are
cutoff to allow the bags to expand with out
restriction and wrap tightly into pipes |
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Miscellaneous
Grout Filled Structures |
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Cylindrical
impermeable tube manufactured from WWT 80kN coated
fabric. Coated fabrics are used in highly
sensitive areas where bleeding from a standard bag
needs to be limited. NB pressure relief/water/air
bleed ports on top tube.
Progressive
internal reinforcement ensures tube holds
structure when inflated though natural
slumping will occur |
Flat
impermeable mattress manufactured from WWT 80kN
coated material. Internal structure ensures that
mattress can be inflated to designed height whilst
providing a consistent coating of grout to prevent
ice cube break-up. Use scour protection at
wharf segment toes, spillways etc |
ABBCo
grout tubes may be configured to provide gap
infill in pipe lining applications. In this
instance a full length gap filler was required for
a 900mm pipe insert in an existing under road
drain. The gap filling bag was attached to the new
pipe the complete assembly was fed up the existing
structure and simply pumped with a suitable grout.
ABBCo has supplied underground tunnel gap filling
grout bags both in Australia and to a world wide
export market including the USA |
