A Study on the Change in Dynamic Stiffness of Resilient Materials According to the Load Duration

摘要

The floating floor structure is of ten used because of its minimal floor impact sound,which works by separating the slab and the upper structure using a resilient material.The floor impact sound is affected by dynamic stiffness of resilient materials.Dynamic stiffness is changed by upper structure loading time.In this study,we selected five different materials (EPS,EPP,EVA,PE and Polyester) as the resilient material and measured the change in dynamic stiffness according to the duration of load.In the measurement result,it was found that the dynamic stiffness of the resilient material except polyester,increased along with the increase in load duration.