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http://dx.doi.org/10.5050/KSNVE.2013.23.1.034

Experiment Evaluation for the Heavy-weight Impact Sound of Dry Double-floor System - Effect of Rubber Hardness and Ceiling Structure -  

Yeon, Junoh (Korea Institute of Construction Technology)
Kim, Kyoungwoo (Korea Institute of Construction Technology)
Choi, Hyunjuong (Korea Institute of Construction Technology)
Yang, Kwanseop (Korea Institute of Construction Technology)
Kim, Kyungho (KCC Central Research Institute)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.1, 2013 , pp. 34-40 More about this Journal
Abstract
The 1st assessment(performance test) was applied to assure the floor impact sound performance for developing the dry double-floor with the change of rubber hardness of the upper panel's support and the ceiling structure of the sub-floor. Depends on the change of the rubber hardness in sub-structure, the heavy-weight sound impact value is improved up to 3 dB, and the light-weight sound impact value is moved up to 21 dB, comparing with the bare-slab. Also, the improved value for the floor impact sound conjugating with the sub-floor's ceiling was 5 dB. Based on this result, the 2nd assessment(performance test) was made the state that the rubber hardness of the sub-floor support was ranged between 50 and 70 for considering the stability of walking patients. In addition to this process, the assessment was carried out with a variety of ceiling structure applied to the dry double-floor structure with the air flow system on the sub-floor's ceiling. The result for the 2nd assessment proved that TYPEII-3 had the better sound reduction performance in the heavy-weight impact sound test than other types, and also for the light-weight impact sound TYPEII-3 had the 29 dB sound reduction performance overall. Henceforth, based on the result the research for the sound reduction performance from the floor impact sound shall be ongoing process as well as the development of a double-dry floor and a sound reduction ceiling to suitable on the field.
Keywords
Floor Impact Sound; Dry Double-floor System; Ceiling Structure; Heavy-weight Impact Sound Source; Light-weight Impact Sound Source;
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