The Physical Properties and Effective in Reducing the Reverberation Time (RT30) of Plates from Bagasse
Sucheewan Yoyrurob ^* and Wisuda Pradupsri
Environmental Science Program, Faculty of Science and Technology, Songkhla Rajabhat University.

Abstract

This research involves the development of plates from bagasse with the aim to study the physical properties and the effective in reducing the reverberation time (RT30) of plates from bagasse. The study tested the ratios of bagasse to the binder were 1:2, 1:3 and 1:4 by weight. The physical properties of prepared plates were percent of thickness swelling and water absorption following TIS 876-2547. It was found that both properties decreased with binder contents. The ratio of 1:2 gave greater percent of thickness swelling than that of TIS 876-2547 standard which is less than 12%. While all ratio gave the percent of water absorption was satisfied by TIS 876-2547 which is less than 80%. The effective in reducing the reverberation time (RT30) of plates from bagasse was found that all ratios are effective in reducing the RT30 in 1000 Hz with 75%. The ratio of 1: 3 and 1: 4 are likely to decrease in the same trend when the frequency is high the effective in reducing the RT30 are decrease.