| Title |
Evaluation of Loss Factor and Deflection of Floor Damping Materials Considering Loading Periods and Environmental Conditions |
| Authors |
Kim, Jung-Min ; Kim, Jin-Koo ; Lee, Jung-Yoon |
| DOI |
http://dx.doi.org/10.5659/JAIK_SC.2015.31.11.11 |
| Keywords |
Floor Damping Materials ; Loss Factor ; Long-Term Deflection ; Submersion ; Noise Through Floor |
| Abstract |
Installing damping layer in the floating floor system is a good way to reduce noises transferred from the houses above so that a number of researchers have studied on the damping materials. This research effort focused especially on the loss factor and deflection of floor sound reduction materials. The experimental program was divided into three sections: the loss factor, deflection of damping materials included in the floating floor system, and the deflection of damping materials submerged completely. Three main parameters were considered in the experimental investigation: the weight of load, the eight types of damping materials and loading periods. Specifically, this experimental test was intended to evaluate the loss factor of damping materials changed subjected to long-term load and also the effect when casting lightweight concrete and finishing mortar and submerged completely throughout the comparative evaluation of deflection of damping materials. The results indicated the loss factor of damping materials was changed time depending subjected to load in the several specimens and flowing the mortar in the damping materials affected their deflections but the submergence of specimens wasn"t related to the deflection. Finally, this research results would be valuable references for predicting the noises causing from the upstairs or nearby in the apartment houses. |