Uretek'sworld wide expertise
in the maintenance of Roads, Highways and Freeways ensures
fast, unobtrusive and low cost solutions for the remediation
of problems arising from deteriorated sub-base. Uretek fills
voids, re-seals culverts and pipes and compresses ground in
a fraction of the time taken by alternate methods - and we
do it at times least inconvenient to road users.
Left:
Uretek India's latest Youtube Movie shows our India team
re-levelling concrete slabs on MSRDC's Mumbai - Pune Expressway.
Right
- This movie shows a road depression which we recently removed
in just six hours. The depression is on a falling grade
on a curved section of road. A later inspection by a surveyor
using GPS equipment found that we were less than +/- 1mm
out of level across the work area.
Rigid Pavements.
URETEK's early projects were nearly all rigid pavements,
so it follows that we have a long history of undertaking
such work and can boast a significant expertise in the
area.
Quite simply, URETEK
is fast, works at times convenient to the traffic flow
and allows for immediate possession of the work area once
operations are complete.
Right:
Unconnected concrete slabs with height
changes like this are re-levelled in a snap with
URETEK.
Flexible
Pavements.
This project corrected a dip in an asphalt roadway that
was 16 feet wide and 6” deep in the center and crossed the
shoulder, the right lane and into the left lane of a divided
highway. URETEK was able to make the repair while only closing
the right lane. . .
The
project was completed in 6 hours & traffic was rolling over
the area once the traffic cones were removed. 1,002 lbs. was
injected – the roadway is level.
Hinge Slabs.
Modern
freeway bridges have hinge slabs on approach to reduce dynamic
load on the bridge, reduce damage to the bridge, smooth
transition onto the bridge, and
to allow for lower compaction levels at the bridge/soil
interface.
Hinge slabs are
designed to drop over time, but are intended to be lifted
back into place by a process such as that offered by URETEK.
URETEK
is fast and convenient. We can lift these slabs one lane
at a time while traffic moves around us. We can work at
night or in the day. And once we return possession, traffic
can use the section we have been working on immediately.
Departure
Slab Lifting.
Right:
This video demonstrates the method used to lift approach
and departure slabs on highway bridges.
Note the speed with which such works
can be carried out.
Special thanks to Uretek USA for this
video.
Road
Anchors.
Designers of freeways employ road anchors to limit road
movement under extreme dynamic load.
Should a road anchor
move, URETEK is usually able to lift it back into place.
URETEK
is used to support damaged road anchors such as this one
in southern NSW, Australia. Road
anchors can not be lifted or re-supported in any other
manner.
Culvert
Maintenance.
When culverts get undermined, road users are placed in danger,
particularly in flash flood situations.
URETEK
has the expertise to re-support culverts and to thereby
re-direct water back through the culvert, thus extending
the life of the section of road by many years.
Pipe Maintenance.
When pipes break, the surrounding soil eventually washes
into the pipe, blocking the pipe, and undermining the
road.
URETEK has the technology to repair
these problems and to complete the work without having
to dig up large areas of road.
In fact many situations that would
otherwise require extensive earthworks can be remedied
in a day (or night).
Left:
If
a site needs to be repeatedly topped, there is a good
chance that an inwardly leaking pipe below is to blame.
Uretek's external pipe maintenance system can solve the
problem, reducing maintenance and negating the need for
more expensive and intrusive repairs.
URETEK's
expanding resin replaces the failed grout, seals and stabilizes
the soil around the pipe, densifies the soil, and re-supports
the roadway.
Embedded
Rail Tracks.
Whether it is a level crossing, a dockyard track, or a
tramway, rail tracks embedded in roads were always a problem
to re-level until URETEK came along.
URETEK can re-level most level crossings in one
day and can work between rail and road operations.
Void
Filling.
The section of road at right actually forms a retaining
wall for water during times of flood. Large quantities
of material were being leached out each time it flooded
leaving gaping holes under the pavement which eventually
would lead to the road being washed away in a major rain
event.
Over a period of several weeks, URETEK was able to stablise
this road in a very remote part of Australia thus demonstrating
that no matter where the job is, URETEK is equipped to
do the job successfully.
Left:This concrete slab in P'dmellow
Road, Mumbai was totally undermined by water and about
to break. The weight of a passing vehicle can be seen
here to be causing the water underneath to pump out
as the slab flexes from the trucks weight.
Uretek injected more than 100kg of resin under this
slab to eject the water, strengthen the ground below
and hence to re-support it.
Until now, pre-compaction of soil was a time consuming business.
URETEK's POWERPILES reduce
pre-compaction times from years to days depending on the
size of the job.
POWERPILES are indicated for marshy ground, bridge approaches
and for some retaining walls.
* Stabilisation of ground
under flexible pavements
* Re-levelling of box culverts
* Stop culverts from being
undermined
* Fill voids
* Pre-compact ground
* Externally seal around broken
pipes
* Fast concrete slab replacement
Advantages
of using Uretek are:
* It's Fast!
* Backed by a world of experience
* Little interference with
traffic flows
*Permanent
* 10 year warranty
PUMPING
CONCRETE
This
photo was taken in a street in Mumbai, it illustrates -
if extremely - what happens when a load is placed on top
of a concrete slab which has a water filled void under it.
The
slab is depressed, and this forces the water under it to
be ejected above, bringing fine soil material with it.
Usually
the water goes back below the slab once the load has passed,
but the fine soil remains on the surface, making the void
below marginally larger.
Sooner
or later, the slab will crack and break if not re-supported
using Uretek to fill the void and strengthen the soil below
the slab.