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http://dx.doi.org/10.5389/KSAE.2011.53.3.083

A Study on the Engineering and Environmental Characteristics of Phosphogypsum-Cement-Soil Mixtures  

Chang, Dong-Su (강원대학교 농업생명과학대학 지역건설공학과)
Yeon, Kyu-Seok (강원대학교 농업생명과학대학 지역건설공학과)
Kim, Ki-Sung (강원대학교 농업생명과학대학 지역건설공학과)
Ha, Seon-Hyo (강원대학교 농업생명과학대학 지역건설공학과)
Kim, Yong-Seong (강원대학교 농업생명과학대학 지역건설공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.53, no.3, 2011 , pp. 83-91 More about this Journal
Abstract
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.
Keywords
Compression test; EDS; phosphogypsum; SEM; soil mixtures; XRD;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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1 Petrukhin, V. P., 1994, Gypsum and Saline Soils. Proc. of the Thirteenth International Conference on Soil Mechanics and Foundation Engineering 265-266.
2 Taha, R., 1989. Utilization of by-product gypsum in road construction. Doctor of Philosophy Dissertation, Texas A&M University.
3 Wrench, B. P., and G. E. Blight, 1985. Compressibility of neutralized phosphogypsum. Proc. of the Eleventh International Conference on Soil Mechanics and Foundation Engineering 3: 1321-1326.
4 Chamberlain, E. J., I. Iskveer, and S. E. Hunsiker, 1990. Effect of freeze-thaw on the permeability and macrostructure of soils. Proceedings International Symposium on Frozen Soil Impacts on Agricultural Range and Forest Lands 145-155. Spokane, WA.
5 Garg, M., A. K. Minocha, and N. Jain, 2011. Environment hazard mitigation of waste gypsum and chalk: Use in construction materials. Construction and Building Materials 25: 944-949.   DOI   ScienceOn
6 Jo, B. W., Y. J. Kim, and E. M. Hwang, 2000. The study on the development of construction materials with chemical by-product gypsum. Proc. of the Korean Concrete Institute Conference 351-354 (in Korean).   과학기술학회마을
7 Kellsen, K. O., 1996. Heat curing and post-heat curing regimes of high-performance concrete: influence on microstructure and C-S-H composition. Cement and Concrete Research 26(2): 295-307.   DOI   ScienceOn
8 Kim, Y. I., and Y. S. Kim, 2010. Unconfined compressive strength and micro-structure properties of CSG materials due to specimen size. Journal of the Korean Society of Agricultural Engineers 52(4): 93-101 (in Korean).   과학기술학회마을   DOI
9 Kim, Y. S., D. E. Suh, W. B. Kim, and W. B. Lee, 2009. Engineering characteristics of the light weight soil using phosphogypsum and EPS beads. Journal of the Korean Geo-Environmental Society 10(6): 19-25.
10 Ahmed, A., K. Ugai, and T. Kamei, 2011. Investigation of recycled gypsum in conjunction with waste plastic trays for ground improvement. Construction and Building Materials 25: 208-217.   DOI   ScienceOn
11 Blight, G. E., 1969. Waste gypsum as an embankment material. Proc. of the Seventh International Conference on Soil Mechanics and Foundation Engineering 39-43.
12 Kim, W. B., 2010. Geotechnical characterization of artificial aggregate made from phosphogymsum as a drainage material. Thesis for the Degree of Master, Gwangju: Chonnam National University.
13 Koo, J. W., 1984. A Laboratory study for reclamation of salt-affected soils by gypsum amendment and water management practices. Journal of the Korean Society of Agricultural Engineers 26(2): 85-96 (in Korean).   과학기술학회마을
14 Lee, Y. S., H. S. Chung, and H. I. Chung, 2001. The engineering and environmental properties for utilization of phosphogypsum as embankment materials. Journal of the Korean Geotechnical Society 17(4): 331-339 (in Korean).   과학기술학회마을
15 Mun, K. J., W. K. Hyoung, W. C. Park, S. Y. So, and Y. S. Soh, 2006. The strength properties of cement matrix containing high-volume wasted phosphogypsum with binder types. Proc. of the Korean Concrete Institute Conference 881-884 (in Korean).   과학기술학회마을
16 Oh, Y. I., K. I. Kim, and E. C. Shin, 2001. Geotechnical characteristics and environmental effect of reclaimed land by utilizing waste gypsum. The KSCE Journal of Civil Engineering 21(1C): 19-26 (in Korean).   과학기술학회마을
17 Pericleous, M. I., and J. B. Metcalf, 1996. Resilient modulus in civil engineering. Journal of Materials in Civil Engineering 8(1): 7-10.   DOI