Zhang, Longjian and Mo, Kim Hung and Tan, Tee How and Yap, Soon Poh and Lee, Foo Wei and Ling, Tung-Chai (2023) Synthesis and characterization of fiber-reinforced lightweight foamed phosphogypsum-based composite. Construction and Building Materials, 394. ISSN 0950-0618, DOI https://doi.org/10.1016/j.conbuildmat.2023.132244.
Full text not available from this repository.Abstract
A foamed phosphogypsum-based composite (FPGC) was synthesized in this study via chemical foaming and the effect of hydrogen peroxide (H2O2) (0.5% to 2.5%) on its properties was investigated. With the increasing dosage of H2O2, more foamed pores were produced, causing a decline in the mechanical strength and water resistance of mixtures. Nonetheless, the increased pores resulted in an improvement in thermal insulation and acoustic ab-sorption. Fiber addition resulted in slight enhancement in the acoustic absorption and thermal conductivity but significantly improved the mechanical strength and water resistance of fiber-reinforced FPGC, particularly polyvinyl alcohol (PVA) fiber. The calcium stearate (CS) (5% to 25%) as foam stabilizer was also incorporated to ascertain its effect on the properties of FPGC. CS content exceeding 15% had a positive effect on the properties of fiber-reinforced FPGC. Finally, the fiber-reinforced FPGC with 1% PVA fiber, 1.5% H2O2, and 20% CS attained a bulk density of 826 kg/m3, compressive strength of 5.08 MPa, softening coefficient of 0.69, and improved sound absorption and thermal conductivity of 0.483, and 0.221 W/m & BULL;K, respectively. This study presents a promising approach for the utilization of phosphogypsum (PG), and further works can be explored to evaluate the long-term performance and durability of FPGC in various environmental conditions.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya (ST040-2021) |
| Uncontrolled Keywords: | Chemical foaming; Lightweight; Phosphogypsum; Fiber reinforcement |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 30 Jul 2025 02:51 |
| Last Modified: | 30 Jul 2025 02:51 |
| URI: | http://eprints.um.edu.my/id/eprint/50740 |
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