Chockfast Orange - Rail grouting

2.000 T cranes roll over these rails several times a day. Due to their activity of hauling heavy weights back and forth, an invisible swaying occurs.
Historically, these rails are grouted with cement grout that has, although minimal, a certain shrink to it. Due to the swaying, the rail pumps up and down on the cement grout creating a small gap between the cement grout and baseplate. Water infiltration, freeze and thaw then result in crumbling of the cement grout. This in turn creates more infiltration, friction and crumbling.
After a few years, at certain points, the rail can pump over 30 mm high with metal fatigue and rail braking as result.
Removing the rail to renew the cement grout is not an option as the rails can only be put out of action for a very short period of time.

As CHOCKFAST is fast curing and presents virtually no shrink. And as CHOCKFAST ORANGE has a compression resistance of 130 N / mm², it is the ideal product to be used by injection in order to fill the gaps under the baseplate and grout the rail firmly.
To date, this solution has been used several times with great success and although the cranes still sway, the pumping effect is countered by the use of CHOCKFAST epoxy grout.