i ABSTRAK
PEMBUATAN PAPERCRETE DENGAN MENGGUNAKAN VARIASI KOMPOSISI MATERAL ABU SEKAM PADI, BENTONIT DAN BUBUR
KERTAS
Oleh
Clarissa August Taviko
Papercrete merupakan material bangunan yang terbuat dari campuran bubur kertas, abu sekam padi, bentonit, dan semen dengan variasi komposisi abu sekam padi sebesar 4,6%, 6,91%, 9,22%, 11,53% dan 13,84% dari berat total serta variasi komposisi bentonit sebesar 27,71%, 25,40%, 23,06%, 20,78%, 18,47% dari berat total. Papercrete dilakukan pemanasan dengan suhu 110℃ selama 6 jam. Hasil pengujian kuat lentur papercrete terbaik terdapat pada sampel K5 dengan variasi komposisi abu sekam padi 13,84% dan bentonit 18,47% yaitu sebesar 0,0152 Mpa, sedangkan nilai kuat lentur terendah terdapat pada sampel K1 dengan variasi komposisi abu sekam padi 4,6% dan bentonit 27,71% diperoleh nilai sebesar 58,87
% yaitu sebesar 0,0064 MPa. Semakin tinggi massa jenis papercrete maka absropsi dan porositas yang dihasilkan akan semakin kecil. Hasil Karakterisasi X-Ray Flouresence (XRF) menunjukkan senyawa didominasi oleh CaO sebesar 51,411%
dan SiO2 sebesar 31,815%. Karakterisasi Scanning Electron Microscopy (SEM) menunjukkan morfologi sampel kuat lentur terbaik berbentuk bulat tak beraturan serta memiliki sedikit pori dari pada sampel kuat lentur terendah yang memiliki lebih banyak pori. Sedangkan hasil karakterisasi Energy Dispersive Spectroscopy X Ray (EDX) sampel papercrete menunjukkan penyebaran didominasi oleh unsur Ca dan Si.
Kata Kunci : Abu sekam padi, bentonit, bubur kertas, kuat lentur, papercrete.
ii ABSTRAC
MAKING PAPERCRETE USING A VARIETY OF COMPOSITIONS OF RICE HUSK ASH, BENTONITE, AND WASTE PAPER PULP
By
Clarissa August Taviko
Papercrete is a building material made from a mixture of paper pulp, rice husk ash, bentonite, and cement with variations in the composition of rice husk ash of 4.6%, 6.91%, 9.22%, 11.53%, and 13.84% of the total weight and variations in the composition of bentonite of 27.71%, 25.40%, 23.06%, 20.78%, and 18.47% of the total weight. Papercrete was heated at 110°C for 6 hours. The results of the best papercrete flexural strength test were found in sample K5 with variations in the composition of rice husk ash of 13.84% and bentonite of 18.47%, which was 0.0152 Mpa, while the lowest flexural strength value was found in sample K1 with variations in the composition of rice husk ash of 4, 6% and 27.71% bentonite, which obtained a value of 58.87%, which is equal to 0.0064 MPa. The higher the density of the papercrete, the lower the absorption and the resulting porosity. The results of X-Ray Fluorescence (XRF) characterization showed that the compound was dominated by CaO at 51.411% and SiO2 at 31.815%. Scanning Electron Microscopy (SEM) characterization showed that the morphology of the best flexural strength sample was irregularly spherical in shape and had fewer pores than the lowest flexural strength sample, which had more pores. Meanwhile, the results of the Energy Dispersive Spectroscopy X-Ray (EDX) characterization of papercrete samples showed that the distribution was dominated by Ca and Si elements.
Keywoards: Rice husk ash, bentonite, pulp, flexural strength, papercrete.
