Frontage for noise-absorbing buildings, has main component and sound absorbent foreign plates, crushed aggregate base, configuration and variable volume for grains, which are linked to each other through resin

摘要

The frontage has a main component and sound absorbent foreign plates, a crushed aggregate base, configuration and variable volume for grains, which are linked to each other through a resin that makes abundant open pores, configuration and different trajectories. The external plates are provided in addition to minimize the passage of sound waves into the passenger compartment, mostly absorbed by lowering the noise level. The drastically reflected wave front component is also provided. The sound absorbent plates are fixed to a metal frame that set to turn to the edges.