Noise barrier designs material for Kuala Lumpur Express Rail Link (ERL) system at residential area

Adnan, 'Ainul Amra (2015) Noise barrier designs material for Kuala Lumpur Express Rail Link (ERL) system at residential area. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

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.

Item Type:Thesis (Masters)
Subjects:T Technology > TD Environmental technology. Sanitary engineering > TD891-894 Noise and its control
ID Code:8029
Deposited By:Normajihan Abd. Rahman
Deposited On:23 May 2016 14:30
Last Modified:23 May 2016 14:30

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