The Potential Of Paddy Husk As Sound Absorber In Concrete Mixture
This work evaluates the performance of cement-based composites made with paddy husk and intended to be used in acoustic barriers. Because acoustic barriers are exposed to external conditions and mechanical loads, a wide range of laboratory tests was performed to evaluate the mechanical, durabilit...
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| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Universiti Sains Malaysia
2022
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| Subjects: | |
| Online Access: | http://eprints.usm.my/57515/1/The%20Potential%20Of%20Paddy%20Husk%20As%20Sound%20Absorber%20In%20Concrete%20Mixture.pdf http://eprints.usm.my/57515/ |
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| Summary: | This work evaluates the performance of cement-based composites made with
paddy husk and intended to be used in acoustic barriers. Because acoustic barriers are
exposed to external conditions and mechanical loads, a wide range of laboratory tests
was performed to evaluate the mechanical, durability, and acoustic characteristics of
the composites. This study aims to determine the physical properties of concrete
mixture with paddy husk as a partial fine aggregate replacement, assess the acoustical
properties of concrete mixture with paddy husk as a partial fine aggregate replacement,
and formulate the optimum ratio for concrete mixture with paddy husk as a partial fine
aggregate replacement for sound attenuation. Samples were designed to the
improvement of insulation noise effects while maintaining strength. The potential of
paddy husk as a replacement in the concrete mixture was studied in improving the
mechanical potential of the barrier. The strength of the sample is investigated using a
compressive test and the noise effect is found using a sound absorption test using an
impedance tube. Six samples are prepared according to the compressive test which is
three samples are tested on 7 days of age and the other three samples are tested on 28
days of age. For the sound absorption test, samples are prepared according to the actual
size of the impedance tube, which is three samples for each category. Based on
Malaysian Standard MS EN 1992-1-1:2010, Concrete grade C30 is selected as the
control sample by considering XC1 class regarding exposure classes related to
environmental conditions in accordance. Concrete with 3% replacement represents the
best compressive strength result at 30.63 N/mm2 and sound absorption result 0.351
A. Hence, the strength of concrete achieves the requirement greater than 30 N/mm2
to maintain strength while improving the sound absorption coefficient. A new
formulate ratio for improving concrete mixture was achieved. |
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