Calmmoon Rail web shielding - field and lab tests

摘要

Calmmoon Rail was approved by the German authority EBA in 2010 as a rail web shielding technology. By the end of 2014 more than 80 km of German Railway track were fitted with it. Measurements as part of the German economic stimulus programme II yielded a noise reduction effect of 3 dB(A) in average for Calmmoon Rail. Calmmoon sheet in the form of 1.3 mm thick noise reduction sheeting glued onto a steel plate (cover). Then noise-absorbent foam from the automotive industry is applied. At the worksite, this L-shaped "shielding" is attached to both sides of the rail by hand and finally secured reliably and lastingly with two rail fasteners per rail compartment. It weighs around 4 kg per metre of rail. At the second noise symposium 26th and 27th June 2012 in Berlin, the measurement results announced by DB - German railways and German Ministry of Infrastructures was that the mass spring rail web damper (RWD) technologies showed an effect of only 2dB(A). The rail shielding showed an effect of 3 dB(A). Calmmoon Rail fulfils the requirements of Schall 03 (2012).