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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국분말야금학회 한국분말야금학회지 한국분말야금학회지 제13권 제2호
발행연도
2006.1
수록면
102 - 107 (6page)

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Recycling industrial wastes such as fly ash from a coal burning heat power plant and shell from an oyster farming were investigated to prevent environment contamination as well as to enhance the value of recycling materials. In this study, the lightweight aggregates and the red bricks were fabricated from fly ashes with other inorganic materials and wastes. The starting materials of the lightweight aggregate were fly ash powder and water glass, and the compacts of these materials were heat treated at 1100℃. The fabricated lightweight aggregates had low bulk density, 0.9-1.2g/㎤, hence floated on the water and had the strength of 7.0-11.0MPa and the modulus of 2900-3300MPa which indicates it has enough strength as the aggregate. Another type of the light weight aggregate was prepared from fly ashes, shell powders and clays. The bulk density, porosity, and compressive strength of these aggregates were 1.19-1.34g/㎤, 18.3~56.1% and 5-12 MPa, respectively. The addition of a small amount of fly ash powder prevented hydration of the light weight aggregates. The red brick was also fabricated from the fly ash containing materials. It is suitable for the brick facing of a building as it has moderate strength and low water absorption rate.

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