Pemanfaatan Serat Serabut Kelapa Sebagai Beton Akustik Pada Dinding Partisi

Abstract

Environmental awareness can be realized with the use of materials derived from natural fibers as a form of energy conservation and environmental protection. For example coco fiber (cocofiber), Coconut Fiber is one of the waste that has not been fully utilized in Indonesia. Whereas the amount of coco fiber capacity produced from coconut harvest every year in Indonesia is quite large. With the above reasons it is necessary to develop the use of natural fibers are widely available in Indonesia, while the purpose of this study is to determine the characteristics of soundproof concrete material with the utilization of coconut fiber, PC cement and sand as the main material aims to find out how much the ability to muffle sound. So in this case the researcher use quantitative approach method through testing and acoustic measurement by using impedance tube support software that is DAQ vactory and HQ control to three varieties of mix of cocofiber 0%, 7% and 15%, and continued with qualitative analysis as effort to conclude Specific characteristics until found the opportunity of its use as a material or basic construction of various types of equipment. The result of this research showed that the variation of the 15% mixture of coconut fibers showed the highest absorbency coefficient value was 0.9756, ie in the 4th sample with 4000 Hz frequency with fast sound wave velocity of 3902.4 m / s. From this research can be concluded that the greater percentage of cocofiber mixture then the ability to muffle the bigger noise