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자료유형
학술저널
저자정보
이승아 (한국토지주택공사) 김영희 (원광보건대학) 강혜영 (전남대학교)
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제36권 제8호
발행연도
2019.1
수록면
787 - 794 (8page)

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This study was performed to investigate the proper conditions for the production of porous geopolymer when mixingorganic particles into mortar and its subsequent thermal treatment. Sawdust was used as an additive for pore formation. Proper conditions of sawdust for mixing and thermal treatment were determined in terms of the water content of thesawdust added, the thermal treatment temperature, and time. The effects of the dosages and particle size of sawdust werealso analyzed by measuring the compressive strength of the cured specimens. It was found that the optimal water contentof sawdust was approximately 50 ~ 60%, judging by the compressive strength results. The proper thermal treatment timewas also determined to be greater than 12 hours when the cube specimen of 5 cm was used. The compressive strengthsof the thermally-treated specimens decreased as an increasing amount of sawdust was added. The dosage of sawdust togeopolymer mixtures should be less than 15% of the weight of metakalolin and fly ash in order to ensure a compressivestrength of more than 20 MPa. After thermal treatment, the bulk density of the geopolymer decreased as the amount ofsawdust added increased. In addition, the compressive strength of thermally-treated specimens increased as the size ofsawdust added in an identical dosage to the geopolymer mixture decreased.

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