Publication: Sound absorption performance of sustainanble concrete infused with oil palm mesocarp and sugarcane bagasse fibres
| datacite.subject.fos | oecd::Engineering and technology::Civil engineering | |
| dc.contributor.author | Odugbose, Babashola Dapo | |
| dc.date.accessioned | 2025-11-27T07:39:12Z | |
| dc.date.available | 2025-11-27T07:39:12Z | |
| dc.date.issued | 2024-12 | |
| dc.description.abstract | Mitigating noise pollution from urbanization and industrialization is crucial. Natural fibers, such as oil palm mesocarp fiber (OPMF) and sugarcane bagasse fiber (SBF), provide sustainable and cost-effective alternatives to synthetic sound absorption materials. This study investigates the effects of OPMF and SBF on the acoustic qualities and other properties of concrete. The study explores the impact of OPMF content at 0%, 2%, 4%, 6%, 8%, and 10%, and SBF content at 1%, 2%, 3%, 4%, and 5%, replacing fine aggregates by volume in concrete. The fibers were used in three sizes, classified as A, B, and C. The sound absorption coefficient (SAC) was measured using an impedance tube within the frequency range of 50 Hz–5000 Hz, while other concrete properties were assessed following relevant standards. Significant improvements in the sound absorption performance of OPMF-C (A, B, and C) were observed, with SAC values of 0.28, 0.42, and 0.27 (21.4%, 49%, and 19%) at frequencies of 3983 Hz, 4053 Hz, and 3983 Hz, respectively. The noise reduction coefficient (NRC) was 0.132, 0.157, and 0.115, while the sound absorption average (SAA) was 0.13, 0.16, and 0.113. Porosity increased by 0.21–5.3%, 24.7–48.3%, and 11.6–63.3%, while compressive strength decreased by 9.40–37%, 12.48–27.25%, and 17.6–53.3% as fiber content increased. SBF addition resulted in SAC peak values of 0.34, 0.46, and 0.32 (35.3%, 52.2%, and 31.3%) at frequencies of 3978 Hz, 4056 Hz, and 3082 Hz, respectively. The NRC values were 0.107, 0.10, and 0.15, while SAA was 0.098, 0.12, and 0.12. Porosity increased by 12.4–40.26%, 11.12–60.50%, and 19.75–111.16%. A slight increase in compressive strength was observed at low fiber content, followed by a decrease with higher fiber loading, ranging from +3.28%, +0.67%, -58.73%, -91.54%, and -92.95% (SBF-C-A); -12.42%, -15.44%, -47.65%, -95.71%, and -95.83% (SBF-C-B); and +2.28%, -13.28%, -55.10%, -94.26%, and -96.01% (SBF-C-C) as fiber content increased from 1% to 5%. Both OPMF-C (A, B, and C) and SBF (A, B, and C) were compared to the control specimen (OPC), which had SAC 0.22, NRC 0.058, SAA 0.061, porosity 14.43%, and compressive strength 49.67 MPa. For optimum composition, SBF-C-(A and C) performed better at 1–2% fiber content, achieving superior sound absorption with high compressive strength. However, when considering high fiber usage with adequate compressive strength, OPMF-C-B at 8% fiber content outperformed SBF-C, as OPMF-C achieved design strength at 28 days, unlike SBF-C, whose compressive strength was drastically reduced. The integration of OPMF and SBF into the concrete matrix forms intricate pore networks, creating unique acoustic pathways that enhance the acoustic properties of the resulting concrete. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/23237 | |
| dc.language.iso | en | |
| dc.title | Sound absorption performance of sustainanble concrete infused with oil palm mesocarp and sugarcane bagasse fibres | |
| dc.type | Resource Types::text::thesis::doctoral thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |