A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry
Nowadays, advanced development and sophisticated new technology have led to various types of environmental pollution such as water, air, land, thermal pollution and so on. Recently, however, noise pollution is becoming one of the major threats to the world especially in urban areas where it adversel...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/matecconf/20178701007 |
| _version_ | 1818413552256417792 |
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| author | Shahidan Shahiron Ramzi Hannan Nurul Izzati Raihan Md Maarof Mohamad Zulkhairi Leman Alif Syazani Senin Mohamad Syamir |
| author_facet | Shahidan Shahiron Ramzi Hannan Nurul Izzati Raihan Md Maarof Mohamad Zulkhairi Leman Alif Syazani Senin Mohamad Syamir |
| author_sort | Shahidan Shahiron |
| collection | DOAJ |
| description | Nowadays, advanced development and sophisticated new technology have led to various types of environmental pollution such as water, air, land, thermal pollution and so on. Recently, however, noise pollution is becoming one of the major threats to the world especially in urban areas where it adversely affects the quality of life of the public. In Malaysia, the Department of Environment has identified that the average transportation noise levels in major cities in peninsular Malaysia are 71.6 dB (A) and 70.4 dB (A) during the day and night respectively. The noise is usually emitted by airplanes, trains, vehicles, motorcycles, trucks and etc. Even though rail transport requires less energy and emits less hazardous substances, it has contributed to noise pollution issues and several health hazards among urban inhabitants such as deafness, nervous breakdowns, mental disorder, heart troubles, high blood pressure, headaches, dizziness, inefficiency and insomnia. Therefore, many studies attempt to reduce noise pollution by applying noise barriers at noise polluted areas via various approaches. This paper aims to explore the effectiveness of noise barriers using noise absorption performance due to several factors such as type of absorbent materials, material thickness, density, porosity and design. This research has found that the thicker the specimen and the denser the absorbent material, the better the sound absorption performance. Besides that, barrier design also plays a major role in determining its effectiveness, where the effectiveness of noise barriers should be high and long enough to break the line-of-sight between the sound source and the receiver. There are several methods that can be used to measure the effectiveness of noise barriers such as the Adrienne Method (in-situ measurement method) and impedance tube method (laboratory measurement method) to measure the acoustic absorption. Nevertheless, the impedance tube measurement method provides the most precise results with the least measurement uncertainty as it only required small samples of the material. |
| first_indexed | 2024-12-14T11:05:01Z |
| format | Article |
| id | doaj.art-ad81f8e592be4537986370a0896935f8 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-14T11:05:01Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-ad81f8e592be4537986370a0896935f82022-12-21T23:04:34ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-01870100710.1051/matecconf/20178701007matecconf_encon2017_01007A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway IndustryShahidan Shahiron0Ramzi Hannan Nurul Izzati Raihan1Md Maarof Mohamad Zulkhairi2Leman Alif Syazani3Senin Mohamad Syamir4Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn MalaysiaFaculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn MalaysiaFaculty of Engineering Technology, Universiti Tun Hussein Onn MalaysiaFaculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn MalaysiaFaculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn MalaysiaNowadays, advanced development and sophisticated new technology have led to various types of environmental pollution such as water, air, land, thermal pollution and so on. Recently, however, noise pollution is becoming one of the major threats to the world especially in urban areas where it adversely affects the quality of life of the public. In Malaysia, the Department of Environment has identified that the average transportation noise levels in major cities in peninsular Malaysia are 71.6 dB (A) and 70.4 dB (A) during the day and night respectively. The noise is usually emitted by airplanes, trains, vehicles, motorcycles, trucks and etc. Even though rail transport requires less energy and emits less hazardous substances, it has contributed to noise pollution issues and several health hazards among urban inhabitants such as deafness, nervous breakdowns, mental disorder, heart troubles, high blood pressure, headaches, dizziness, inefficiency and insomnia. Therefore, many studies attempt to reduce noise pollution by applying noise barriers at noise polluted areas via various approaches. This paper aims to explore the effectiveness of noise barriers using noise absorption performance due to several factors such as type of absorbent materials, material thickness, density, porosity and design. This research has found that the thicker the specimen and the denser the absorbent material, the better the sound absorption performance. Besides that, barrier design also plays a major role in determining its effectiveness, where the effectiveness of noise barriers should be high and long enough to break the line-of-sight between the sound source and the receiver. There are several methods that can be used to measure the effectiveness of noise barriers such as the Adrienne Method (in-situ measurement method) and impedance tube method (laboratory measurement method) to measure the acoustic absorption. Nevertheless, the impedance tube measurement method provides the most precise results with the least measurement uncertainty as it only required small samples of the material.http://dx.doi.org/10.1051/matecconf/20178701007 |
| spellingShingle | Shahidan Shahiron Ramzi Hannan Nurul Izzati Raihan Md Maarof Mohamad Zulkhairi Leman Alif Syazani Senin Mohamad Syamir A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry MATEC Web of Conferences |
| title | A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry |
| title_full | A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry |
| title_fullStr | A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry |
| title_full_unstemmed | A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry |
| title_short | A Comprehensive Review on the Effectiveness of Existing Noise Barriers commonly used in the Railway Industry |
| title_sort | comprehensive review on the effectiveness of existing noise barriers commonly used in the railway industry |
| url | http://dx.doi.org/10.1051/matecconf/20178701007 |
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