REINFORCEMENT STRUCTURE HAVING DAMPING COMPOSITION FOR REDUCING FLOOR IMPACT SOUND OF APARTMENT HOUSES

摘要

There is disclosed a reinforced beam for noise reduction between layers of a building, which is installed in the lower part of a ceiling of a conventional apartment house and can reduce shock vibrations caused by a floor impact source. For this purpose, a viscoelastic composition for vibration damping comprising 10 to 20 parts by weight of water, 10 to 30 parts by weight of a binder, 20 to 40 parts by weight of a first inorganic pigment and 10 to 25 parts by weight of a second inorganic pigment, And a vibration attenuating adhesive having a vibration attenuation characteristic by attaching the vibration attenuating sheet to the ceiling. The present invention can further reduce the occurrence of interlayer noise in the apartment building by additionally installing it in a pre-built apartment house.