Kata Kunci
composite panel density
compressive strength
thermal conductivity
natural fiber composites
Abstrak
This study investigates the effect of material composition on the density, compressive strength, and thermal conductivity of ijuk fiber-based composite panels. The panels were fabricated using varying proportions of cement, lime, and ijuk fiber, namely 1:1:2, 1:2:1, and 2:1:1. Density measurements were conducted by calculating the mass-to-volume ratio of each specimen, while compressive strength testing was performed in accordance with SNI 1974:2011. Thermal conductivity was measured using a Thermal Conductivity Meter under steady-state conditions and subsequently converted into SI units (W/m·K). The results indicate that the composition significantly influences the physical and mechanical properties of the panels. The highest density was obtained in the 2:1:1 composition (1.264 g/cm³), while the lowest density was observed in the 1:1:2 composition (0.798 g/cm³). In terms of mechanical performance, the 1:1:2 composition exhibited the highest compressive strength (15.22 MPa), whereas the 1:2:1 composition showed the lowest value (9.56 MPa). Regarding thermal properties, the 1:2:1 composition demonstrated the lowest thermal conductivity (≈0.364 W/m·K), indicating superior thermal insulation performance, while the 1:1:2 composition showed the highest thermal conductivity (≈0.460 W/m·K). Overall, the findings reveal a trade-off relationship between density, mechanical strength, and thermal insulation. The 1:1:2 composition is more suitable for structural applications requiring higher strength, whereas the 1:2:1 composition is more appropriate for thermal insulation purposes. The 2:1:1 composition provides a balanced performance between mechanical and thermal properties. These results highlight the importance of optimizing material composition to achieve desired performance characteristics in ijuk-based composite panels
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Hak Cipta (c) 2026 Nafsiah Aswawi, Rinto Suppa, Andi Tenri, Lusman Sulaiman, Aizar Muhtar