Manufacturing green hybrid new material made from bagasse, rice husk ash and reinforced glutinous glue as noise absorption

For those who live in urban areas or on the outskirts of urban areas, they feel the declining quality of health due to the impact of environmental noise from increased mobility and industry. Engineering materials for their homes to protect and reduce exposure to environmental noise is becoming important. House wall materials are needed in the ability to absorb sound and good air insulation effect. One of them is fibrous material as a natural material and is effective in reducing sound compared to synthetic materials. The material for noise reduction in this study was made from a mixture of bagasse and rice husk ash with glutinous glue adhesive. The purpose of this research is to manufacture a composite from a mixture of bagasse and rice husk ash with glutinous glue as a new green hybrid material for noise absorption in a room. The pultrusion method was used in the manufacture of specimens with random fiber orientation, the ratio of the percentages of the volume variation fractions of bagasse and rice husk ash were (70:30), (50:50), (30:70), core thickness 1.5 cm and compaction. 3, the input frequency is 10 KHz. Mix of glutinous glue adhesive as much as 10%, 12.5%, and 15%. The test results showed that there was a difference in noise absorption for each specimen variation between the volume fraction of fiber and glutinous glue adhesive to the value of the noise absorption coefficient. Materials that have a good noise absorption coefficient on compaction specimens 3:4, 2.5 cm thick at a frequency of 4.8 KHz of 0.58 with a class D category (highly absorbent) in the range of 0.40 to 0.64 based on ISO 11654: 1997.