1. 1. 2. 3. 4. 5. © Leaching Characteristics Of A Fine-Grained Calcareous Sediment Aiban, SA GEOLOGICAL SOC PUBL HOUSE, QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY; pp: 251-266; Vol: 40 King Fahd University of Petroleum & Minerals http://www.kfupm.edu.sa Summary The Eastern Province of Saudi Arabia has witnessed extensive industrialization and urbanization over the past three decades. The wastes produced by such developments would have a serious environmental impact if they were not disposed of properly. The effectiveness of earthen liners or closure caps as hydraulic barriers depends on the composition and construction of the typical local materials used. This investigation was undertaken to evaluate the effect of leaching on some of the properties of a local calcareous soil. Samples were compacted at different moisture contents and subjected to leaching for periods ranging from a few months to over a year in fixed-wall permeameters. The permeation fluid consisted of distilled water mixed with sabkha brine at different proportions. Test results show that the permeability increases with the permeation period as a result of leaching. This is more pronounced in the case of samples compacted on the dry side of optimum compared with those compacted both at optimum and on the wet side of optimum. The coefficient of permeability of the calcareous samples increased by up to 19 times the initial value. The total dissolved solids in the effluent increased initially and then decreased to almost their initial values towards the end of the tests. References: ABAHUSAYN MM, 1977, CLAY CLAY MINER, V25, P138 ABDULJAUWAD SN, 1994, Q J ENG GEOL, V27, P333 ABDULJAUWAD SN, 2001, J SCI TECHNOL, V6, P21 AIBAN SA, 1995, ENG GEOL, V39, P203 AIBAN SA, 1995, P 4 SAUD ENG C KING, V2, P393 Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa

2. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. © AIBAN SA, 1998, CONSTR BUILD MATER, V12, P329 AIBAN SA, 1999, AR1461 KACST AIBAN SA, 1999, P 2 INT C ENG CALC S, P101 AKILI W, 1980, P 10 INT C SOIL MECH, V4, P537 ALAMOUDI OSB, 1993, 4 INT C STRUCT FAIL, P280 ALAMOUDI OSB, 1994, CEMENT CONCRETE AGGR, V16, P3 ALAMOUDI OSB, 1995, ACI MATER J, V92, P236 ALAMOUDI OSB, 1995, ARAB J SCI ENG, V20, P405 ALKER SC, 1995, P S GREEN 93 WAST DI, P215 ALSAYARI SJ, 1978, QUATERNARY PERIOD SA, V1 ALTAMIMI MH, 1985, THESIS KING FAHD U P AMIN A, 1997, NAT HAZARDS, V16, P57 AZAM S, 2000, B ENG GEOL ENVIRON, V59, P211 AZAM S, 2003, NATURAL HAZARDS REV, V4, P90 BARBOUR SL, 1993, CAN GEOTECH J, V30, P920 BATES RL, 1980, GLOSSARY GEOLOGY BUTLER GP, 1969, J SEDIMENT PETROL, V39, P70 CAGATAY MN, 1988, ARAB J SCI ENG, V13, P47 CAGATAY MN, 1990, CLAYS CLAY MINER, V38, P299 DANIEL DE, 1995, WASTE CONTAINMENT FA DUPERRET A, 2005, ENG GEOL, V78, P321, DOI 10.1016/j.enggeo.2005.01.004 27. EVANS JC, 1991, FDN ENG HDB 28. FELBER H, 1978, QUATERNARY PERIOD SA, P50 29. FOOKES PG, 1975, GEOTECHNIQUE, V25, P406 30. FRATALOCCHI E, 1995, P S GREEN 93 WAST DI, P251 31. HILF JW, 1991, FDN ENG HDB 32. HOLTZ RD, 1981, INTRO GEOTECHNICAL E 33. HORTA OS, 1988, P INT C ROADS ROAD T, P107 34. HOTZL H, 1978, QUATERNARY PERIOD SA, P265 35. JOHNSON DH, 1978, QUATERNARY PERIOD SA, P45 36. JOHNSON H, 1978, QUATERNARY PERIOD SA, P84 37. JONES RM, 1995, P S GREEN 93 WAST DI, P433 38. KALTEZIOTIS N, 1995, P S GREEN 93 WAST DI, P323 39. KAMAL MR, 1974, 2 AR C MIN RES RIY S 40. KINSMAN DJJ, 1966, 2 S SALT, V1, P302 41. MITCHELL JL, 1993, FUNDAMENTALS SOIL BE 42. MITCHELL RS, 1985, DICT ROCKS 43. MOHAMEDZEIN YEA, 2005, ENG GEOL, V80, P271, DOI 44. 10.1016/j.enggeo.2005.06.001 45. NETTERBERG F, 1982, ASTM STP, V777, P296 46. PETTIJOHN FJ, 1975, SEDIMENTARY ROCK 47. POWERS LF, 1963, 560D US GEOL SURV PR 48. QAHWASH AA, 1989, ENG GEOL, V26, P161 49. ROGERS J, 1985, IND MINERAL RESOURCE Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa

3. 50. 51. 52. 53. © SHADFAN H, 1985, CLAY CLAY MINER, V33, P451 SHADFAN H, 1985, SOIL SCI SOC AM J, V49, P243 TAYLOR JCM, 1969, SEDIMENTOLOGY, V12, P69 TERZAGHI K, 1967, SOIL MECH ENG PRACTI For pre-prints please write to: saiban@kfupm.edu.sa Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa