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Uretek's world 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.

DOWNLOAD the Case Study of this project.

   
Pre-compaction.

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.

DOWNLOADS

Download #1:
Void Filling and Concrete Panel
Re-support on
Mumbai to Pune Expressway.

(2mb pdf file)

Download #2:
Void Filling Under
P'dmellow Road, Mumbai

(569k pdf file)

Download #3:
Uretek's Roads Brochure 5c
(1.2mb pdf file).
More Case Studies inside.

Our service to road owners includes:

* Re-levelling of concrete pavements

* Re-levelling approach & departure slabs

* 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.

 


 
   

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