Noise barrier designs material for Kuala Lumpur Express Rail Link (ERL) system at residential area
This study was to observe the noise produce by ERL train contribute to the noise pollution towards eco system or residential area that located near to the track and this study also involve the lab investigation on material used to design the noise barrier. Study was held 5 days from Monday to Friday...
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| Pengarang Utama: | |
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| Format: | Thesis |
| Diterbitkan: |
2015
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| Subjek-subjek: | |
| Capaian Atas Talian: | http://eprints.uthm.edu.my/8029/ http://eprints.uthm.edu.my/8029/1/'ainul_amira_adnan.pdf |
| Penanda-penanda: |
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| Ringkasan: | This study was to observe the noise produce by ERL train contribute to the noise
pollution towards eco system or residential area that located near to the track and this
study also involve the lab investigation on material used to design the noise barrier.
Study was held 5 days from Monday to Friday. The data were observed at peak hour
from 8:00 am until 9:00 am, off peak hours from 12:OO pm until 1:00 pm and night
session from 1 1 :00 to 12 midnight. From the observation noise level at peak hours is
higher than noise level off peak hours and night hours. This can be seen from the
collected data at peak hours 62.84 dBA, 61.24 dBA for off peak,hours and 59.44 dBA
for night hours. From this collected data &ved that the noise levels exceed and over the
noise limits for residential area 55 &A referring to suggested noise by WHO for
residential area. Next investigation was held in a laboratory to test the chosen material
on impedance tube kit. From the gathered data showed that fiber glass wool suitable to
use as infill for noise barrier. Its absorption coefficient show 0.988330 and this value is
slightly to 1 (fully absorptive). While, absorption coefficient for insulflex and
polycarbonate showed the material were reflective materials 0.47183 for insulflex and
0.28634 for polycarbonate panel. This both value was nearer to 0 therefore this material
is fully reflective. |
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