Electronic Theses and Dissertation

Papan semen merupakan salah satu material konstruksi yang banyak digunakan, salah satunya dalam bentuk glass fiber reinforced cement (grc) yang menggunakan serat kaca sebagai bahan penguat. seiring meningkatnya perhatian terhadap aspek keberlanjutan, jerami padi mulai dikembangkan sebagai alternatif bahan penguat alami. penelitian ini mengembangkan papan semen dengan menggunakan partikel jerami padi ukuran 80 mesh sebagai penguat serta menentukan komposisi optimum. papan semen dibuat dengan variasi komposisi jerami padi 0, 5, 10, 15, dan 20 (vol.%). karakterisasi meliputi pengujian kerapatan, porositas, daya serap air, pengembangan tebal, modulus of rupture (mor), modulus of elasticity (moe), dan konduktivitas termal. hasil penelitian menunjukkan bahwa peningkatan komposisi jerami dapat meningkatkan porositas, daya serap air, dan pengembangan tebal, menurunkan kerapatan dan konduktivitas termal. pada komposisi jerami padi 10 (vol.%) diperoleh hasil kerapatan 1,77 g/cm3, porositas 13%, daya serap air 8%, pengembangan tebal 0,87%, mor 17,662 mpa, moe 10,616 gpa, dan konduktivitas termal 0,3318 w/m.k sehingga memberikan karakteristik paling optimal yang berpotensi sebagai material konstruksi yang lebih ramah lingkungan. kata kunci : papan semen, partikel jerami padi, sifat fisis, sifat mekanis, konduktivitas termal

Cement board is one of the most widely used construction materials, including Glass Fiber Reinforced Cement (GRC), which utilizes glass fiber as a reinforcing material. With increasing attention to sustainability, rice straw has been developed as an alternative natural reinforcement. This study developed cement boards reinforced with 80-mesh rice straw particles and determined the optimum composition. The cement boards were fabricated with rice straw contents of 0, 5, 10, 15, and 20 vol.%. Characterization included density, porosity, water absorption, thickness swelling, Modulus of Rupture (MoR), Modulus of Elasticity (MoE), and thermal conductivity tests. The results showed that increasing the rice straw content increased the porosity, water absorption, and thickness swelling, while decreasing the density and thermal conductivity. At a rice straw content of 10 vol.%, the cement board exhibited a density of 1.77 g/cm³, porosity of 13%, water absorption of 8%, thickness swelling of 0.87%, a Modulus of Rupture (MoR) of 17.662 MPa, a Modulus of Elasticity (MoE) of 10.616 GPa, and a thermal conductivity of 0.3318 W/m·K. This composition exhibited the optimum overall performance, indicating its potential as a sustainable cement board for construction applications. Key word : Cement board, rice straw particles, physical properties, mechanical properties, thermal conductivity.