| 폐기물을 이용한 투수블록의 투수성 및 동결융해저항 특성 |
| 신대용, 한상목1, 김경남2, 이현종 |
강원대학교 석재복합연구소
1강원대학교 신소재공학
2삼척대학교 신소재공학 |
| The Properties of Permeability and Freeze-Thaw Resistance of Water-Permeable Paving Brick Using Wastes |
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| ABSTRACT |
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Porous ceramics for water-permeable paving brick was prepared by the sintering of mixed materials comprising of sewage sludge ash, waste porcelain fragment, waste glaze and low-grade clay at 1,000$^{circ}C$ for 2 h, and the physical $.$mechanical properties, the permeability and the freeze-thaw resistance of specimens with preparation parameters were investigated. The physical mechanical properties were increased in specimens while porosity and permeability were decreased with increasing sewage sludge ash content and sintering temperature on the properties of specimens showed the opposite results. The bulk density, porosity, compressive strength and permeability (passed charge) of 30A60F specimens with 30 wt% of sewage sludge ash content, waste porcelain fragment size with 1∼2 mm and sintered at 1,000$^{circ}C$ for 2 h were 2.17, 46.2%, 221 kgf/$textrm{cm}^2$ and 3,150 coulombs, respectively. The permeability was increased with increasing waste porcelain fragment size, however compressive strength was decreased. The freeze-thaw resistance of 30A60F specimen with 1∼2 mm of fragment size was superior to that of the other specimens. The 30A60F specimens can be used for the water-permeable paving brick with the high permeability and adequate strength. The heavy metals included in the all specimens showed lower than the standard level. |
| Key words:
Water-permeable paving brick, Sewage sludge ash, Waste porcelain fragment, Physical |
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