Abstract—This study performed investigation of physical and mechanical properties of hollow brick design with sago husk as filler and its combination with 10% bottom ash. As previous works showed excellent result in those properties, and 5.6 MPa gap for compressive strength with the minimum requirement, it was expected that hollow design of bricks still provided good results. Six models of hollow bricks were developed by considering stress concentration factor that might affect compressive strength. Those models were examined with three composition of sago husk filler, i.e. 1.1%, 2.2% and 2.5%. Similar method of production was conducted. It can be concluded from the result that all developed models could be used for both structural and non-structural element of wall housing. The bulk density varied from 1.3 to 1.8 kg/cm3 and the IRA was approximately 0.18%. Therefore, utilization of hollow brick design for building will provide better performance in terms of strength and building weight.
Index Terms—Bottom ash-hollow brick, sago husk, density, humidity, compressive strength, stress concentration.
Kurniati Ornam, Santi, S. B. Amri, and Syafrianto Amsar are with the Department of Architecture, Universitas Halu Oleo, Kendari, Indonesia (e-mail: kurniati.ornam@yahoo.co.id, santi_muli@yahoo.co.id, linda.amri@gmail.com, amsyar.sa@gmail.com).
Masykur Kimsan. is with the Department of Civil Engineering, Universitas Halu Oleo, Kendari, Indonesia (e-mail: de_noy1406@yahoo.com).
La Ode Ngkoimani is with the Department of Geology Engineering, Universitas Halu Oleo, Kendari, Indonesia (e-mail: laodem@yahoo.com).
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Cite: Kurniati Ornam, Masykur Kimsan, La Ode Ngkoimani, Santi, S. B. Amri, and Syafrianto Amsyar, "Utilization of Sago Husk as Filler in Modified Structural Bottom Ash –Hollow Bricks upon Traditional Production," International Journal of Materials, Mechanics and Manufacturing vol. 7, no. 3, pp. 150-153, 2019.