Railway repairs

Stabilization and filling of cavities in the track bed

In the interest of sustainability and, of course, to save costs, repairing is sometimes better than replacing – as in the case of the Canadian railway in the fall of 2024.
There, subway tracks were damaged in two places. With the help of a 2K PU injection material specially developed for this application in a mixing ratio of 1:1, the ballast and soil under the tracks were stabilized and cavities were filled. Our American subsidiary WIWA LLC supervised the project on site with a WIWA INJECT 2K 333 GX, which delivered 27.5 liters per minute at approx. 25 double strokes per minute and with a pressure ratio of 18:1. Within three hours, it had pumped an impressive 1200 liters of material. In total, injection was carried out over a distance of almost nine meters, with the packers being used less than a meter apart (and up to three meters deep in the ground).
The team worked in two consecutive nights, each time from 1 to 4 o'clock in the morning, because local trains had to be running again from 5 o'clock. And everything went without a hitch. The fact that the track bed did not have to be completely replaced meant that massive rail disruptions and considerable costs could be avoided.