Transition zone management method wins UK patent

UK: Geotechnical contractor Geobear has been granted a UK patent for its track strengthening method for use in transition zones.

Transition zones are found at the change from flexible formations like ballast to rigid foundations like concrete. These abrupt changes can cause differential settlement, leading to track faults, damage to sleepers, rails, and, in extreme cases, derailment.

Geobear’s method creates a gradual change in track bed support by using geopolymer injections beneath the existing tracks. The company …