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This study aimed to investigate the engineering and environmental characteristics of phosphogypsum-cement-soil mixtures composed of phosphogypsum, soil, and a small amount of cement was analysed on the basis of the unconfined compression test, the tensile strength test, the freezing and thawing test, the wetting and drying test, SEM and EDS analysis, XRD analysis and Leaching test.
The specimens were manufactured with soil, cement and phosphogypsum. The cement contents was 10 %, and the phosphogypsum contents was 10, 20, 30, and 40 % by the weight of total dry soil. Each specimen was manufactured after curing at constant temperature and humidity room for 3, 7 and 28 days, after which the engineering characteristics of phosphogypsum-cement-soil mixtures were investigated using the unconfined compression test, the tensile strength test, the freezing and thawing test, the wetting and drying test. The basic data were presented for the application of phosphogypsum-cement-soil mixtures as construction materials.
To investigate the environmental characteristics, leaching test was performed and the leaching test results were far below than of regulatory requirement of Waste Management Act in Korea. Therefore the results show that phosphogypsum is environmentally safe and can be used as construction materials in environmental aspect.
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참고문헌 (17)
참고문헌 신청
Ahmed, A. / 2011 / Investigation of recycled gypsum in conjunction with waste plastic trays for ground improvement / Construction and Building Materials 25 : 208 ~ 217
Blight,G.E. / 1969 / Waste gypsum as an embankment material / Proc. of the Seventh International Conference on Soil Mechanics and Foundation Engineering : 39 ~ 43
Chamberlain, E. J / 1990 / Effect of freeze-thaw on the permeability and macrostructure of soils / Proceedings International Symposium on Frozen Soil Impacts on Agricultural Range
Garg, M / 2011 / Environment hazard mitigation of waste gypsum and chalk: Use in construction materials / Construction and Building Materials 25 : 944 ~ 949
Jo, B. W / 2000 / The study on the development of construction materials with chemical by-product gypsum / Proc. of the Korean Concrete Institute Conference : 351 ~ 354
Blight,G.E. / 1969 / Waste gypsum as an embankment material / Proc. of the Seventh International Conference on Soil Mechanics and Foundation Engineering : 39 ~ 43
Chamberlain, E. J / 1990 / Effect of freeze-thaw on the permeability and macrostructure of soils / Proceedings International Symposium on Frozen Soil Impacts on Agricultural Range
Garg, M / 2011 / Environment hazard mitigation of waste gypsum and chalk: Use in construction materials / Construction and Building Materials 25 : 944 ~ 949
Jo, B. W / 2000 / The study on the development of construction materials with chemical by-product gypsum / Proc. of the Korean Concrete Institute Conference : 351 ~ 354
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