A Study on the Sound Absorption effect of Concrete track the Sound Absorption Blocks in Urban Transit

도시철도 콘크리트 궤도의 흡음블럭이 소음저감에 미치는 영향

Urban transit is promoting improvement of the concrete track to solve many problems maintenance in ballasted track. But concrete track has a lot of noise compared to ballated track by multiple reflections. The concrete track is to install sound absorption blocks to reduce noise. And it has a lot of research and effort. This is study analyzed the effect of sound absorption blocks though field measurements, in the range of installed sound absorption blocks. And this was an analysis of the surface shape and sound absorption effects of sound absorption blocks.