Structural Repair
Resin bearing the load
Oxford Hydrotechnics use innovative epoxy resin solution to repair
bearing erosion caused by on-track movement
Oxford Hydrotechnics were approached by the
client to devise a solution to repair damage
to a brickwork arch beneath a rail bridge.
The problem was deemed to be the result
of excessive vertical movement of cast iron
troughs on their bearings, particularly when the
bridge was carrying a train load above.
The issue had resulted in Network Rail being
forced to reduce the line speed on the section
of track that passed over the bridge as a
precautionary measure and urgent remedial
works were scheduled. Proposed solutions
included masonry pinning using helical ties and
some form of grouting solution to arrest the
movement of the troughs.
It was deduced that, as there was no evidence
of spoil falling out of the bridge, the bearing
areas had been subjected to a crushing action
only, and that this would not have created large
voids within the structure.
H2OX engineers concluded that a cementitious
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