Green Materials Comparison of Sawdust and Coconut Fiber Acoustical Waffle Panel

Abstract

The natural wealth of Indonesia produces a wide range of natural resources. This research will discuss sawdust and coconut fiber for example from natural resources which can be processed into building materials. Various researches have studied the absorber made from sawdust and coconut fiber, but only a few studies that made the absorber material that had the texture of waffle on its surface. The research method used was the method comparisons of density, absorption coefficient and Sound Transmission Loss (STL). The result is that the waffle panel from sawdust has a higher density than the waffle panel made of coconut fiber. The STL of the coconut fiber panel has ranged between 46,134 – 51,312 dB. This value is lower than the STL material of sawdust that has a value between 47,301 – 62,688 STL. The absorption coefficient of coconut fiber panels is 0,432–0,511, while the absorption coefficient of sawdust panel has range of 0,469 – 0,529.