Road Bridge Approach Slabs Raised

BRIDGE ABUTMENT (APPROACH)  SLABS AND ROAD ANCHORS ARE OFTEN CORRECTED AND RESUPPORTED BY URETEK

The URETEK Method is widely and increasingly employed to rectify specific highway problems such as correcting road anchors and re-supporting and raising bridge approach slabs.

Uretek as a replacement sub-base material is a proven longer lasting solution than ‘Mud-Jacking’, as Uretek resins do not powder and break-up under dynamic loading and pavement flexing - they retain a measure of elasticity.  Nor do they inhibit the required action of expansion joints.

The URETEK Method also gives an enormous time benefit because all traffic can flow over the area just 30 minutes later.

Increasingly heavy modern traffic imposes huge strains on bridge approach slabs, pavements and sub-grades. Typical is the problem of repetitive pounding given by huge road freighters to the ground supported ends of bridge approach slabs. Unlike thin cement grout, Uretek will not powder or break up.

In such locations the sub-grade fill has often been inadequately compacted because of the proximity of the abutment or there is embankment bulging or a drainage problem, etc.  So the ground becomes unable to withstand the dynamic loads imposed and the approach slab increasingly settles over time, eventually to become a virtual ‘Ski Jump’.

Uretek Slab Lifting is used to raise the transition slab (and adjacent pavement) back to its correct position. Most importantly, Uretek Deep Injection can then be used to compact and strengthen the sub-grade at the depths required.

Working with one lane at a time and, where appropriate, at night, involves the least possible inconvenience to traffic flow.

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