Study on Physical and Mechanical Properties with Its Environmental Impact in Konawe - Indonesia upon Utilization of Sago Husk as Filler in Modified Structural Fly Ash - Bricks

Utilization sago husk as brick's filler is aimed not only to be insulator for burning process, as shown on sawdust and reed, but also to reduce bad environmental impact indeed. Therefore, it is paramount importance to obtain range of composition of sago husk, as filler upon fly ash brick's production that results proper quality as building material. Some standard i.e. ASTM C 67-14, ASTM D 2487-06, and SNI 15-2094, 2000 are used in this this research as minimum requirements and quality control of each steps of brick's production. Eight compositions of sago husk mixed with clay and fly ash i.e. 1.3%, 1.7%, 2%, 2.3%, 2.6%, 2.9%, 3.1%, and 3.3%, will be evaluated on its dimension, weight, initial rate of absorption and compressive strength. The results show that sago husk as filler upon brick's production decreases the compressive strength of fly ash brick, yet meet the minimum requirement. All composition meet requirement from ASTM C 67-14, ASTM D 2487-06, and SNI 15-2094, 2000. In terms of environmental impact, there might be significant values in reduction of sago husk waste in the river stream, since based on demand analysis, the waste still can be used for admixture of structural bricks.