Analytical and Laboratory Evaluation of the Solubility of Gypsiferous Soils
Abstract
Gypsum soil is one of the problematic soils because of considerable solubility for Gypsum particles in contact with water. In this research the effects of three factors including; gypsum percent, hydraulic gradient and soil texture were studied on solubility of gypsum soils. To do this, samples of gypsum soils were provided artificially by adding various rates of natural gypsum rock including 0, 5, 10, 20 and 30 percent weight of 3 kinds of soil textures including clay, silty clay and sand. Totally, 15 types of gypsum soils were prepared. Then each of gypsum soils were leached under five hydraulic gradients levels 0.5, 1, 2, 5 and 10. The results of the test indicated that the rate of Gypsum in the soil had direct effect on the rate of soluble and by increasing the percent of Gypsum, the rate of solubility was increased. In addition, by increasing hydraulic gradient, the speed of water existing soil media in a specified time was increased and also higher rate of Gypsum was derived. Also the soil texture has a considerable effect on the rate of solubility of soil. In this study, rate of solubility of gypsum soils with sandy soils was determined as 1.5 to 2 times more than the rate of clay soils. The statistical results show the highest impact of gypsum percentage and lowest impact of hydraulic gradient soil on solubility of particles in different types of soils and it has no significant effect on the overall equation of the soil texture.
Keywords
References
Abbasi , N., Mahdieh, M., Davoodi, M." Application of lime and natural pozzolan for stabilization of sandy soils". Journal of water and soil sciences, Industrial university of Isfahan, No 62,(2011). 245-258.
Abedi Koupai,J., Soltanian, s., and Gheysari M." Impact of Micro Silica, Pumice and Perlite on Mechanical Properties of Gysiferous Soils". Journal of Science and Technology of Agriculture and Natural Resources. Vol.19, No.72( 2015). 337-349.
Abbaspoor , S., Daavi, H. and Fili, J.,ed. Practical methods in improving constructed canals on gypsiferous soils in operating irrigation networks, Case study: Canal A, Behbahan Network: 1st Iranian Seminar on Geotechnical Issues of Irrigation and Drinage Networks, Ag. Eng. Research Institute, Karaj, Iran. 2008.
Coutinet, S. Méthodesd’analyseutilisables pour les sols salés, calcaireset gypseux. Agronomie Tropicale, Paris, 12 (1965). 1242-1253.
Fauzia , Ahmad , M.D. , said , A.M.and Najah , I. "Effect of Leaching and gypsum soil" . International Journal of scientific Research publications, Vol. 2, issue 9 (2012).
Hashemi, S. S., M. Baghernejad, M. and Najafi Ghiri,M ."Clay Mineralogy of Gypsiferous Soils under Different Soil Moisture Regimes in Fars Province Iran". Journal of Agricultural Science and Technology. Vol.15, No. 5. (2013) .1-7.
Kargar, S., ed. investigating the effect of gypsum on some physical properties of soils: The first national seminar of geotechnical issues of irrigation networks, Agricultural Engineering Research institute, 2007.
Kifae, A.A.“Chemical and physical effects on engineering properties of gypseous subgrade soil”. Al-Qadisia Journal for Engineering Sciences, Vol. 3, No. 3 (2010). 17 p.
Mahmoodi, Sh., ed. Properties and management of Gypsiferous soils: 4th Soil Science Congress of Iran, Isfahan Univ. of Technology,(1994).29- 31.
Mou’taz A.,Al- Dabbas,Tom, S. and Yassen M." Comparison of Gypseiferious Soils in Samarra and Karbala Areas". Iragi Bulletin of Geology and Mining.Vol.6, No.2. 2010. 115-126.
Negad Hashemi, P, Rahimi, H and Mahmoodi, Sh," Investigating the permeability of gypsum soils during leaching". journal of agriculture of Iran, vol :31, No 2 (1999). 241-254
Rahimi, H. and Yoosefi, A, “Failure of underground water storage at Hengam Island due to being founded on salt Dome”, Technical Report, Hormozgan Regional Water Board, Iran, 1995.
Rahimi , H, Abbasi, N, eds . Geotechnical Engineering, Problematic soils, Tehran University .Press. 2015.
Rahimi ,T. and Musavi Jahromi, S.H."Effect of polyurethane mastic on shear strngth of gypsiferous soil" Journal of Science and Technology of Agriculture and Natural Resources. Vol.19, No.74. (2016) .165-177.
Rogers, J.D, The St francis dam failure, worst American Civil Engineering disaster of the 20th cnetry: shelmon Specialty conference on dam foundations failures and Incidents, Denver , Colorado. 2013.
Sadrekarimi, J., Kiyani, M. and Fakhri, B. “Gypsum dissolution effects on the performance of a large dam”, ICOLD, Barcelona, Spain. 2006.
Salih, N.B., Stability of Dams Constructed on Problematic Substrate", PhD Thesis ,Brunel University ,London, (2013). 382p.
Yaghmaeean, N, Givi, G." comparison various methods of measuring gypsum in some soils of Isfahan", journal of agriculture science and natural resources, volume 42 (2006). 565- 576.
DOI: 10.28991/cej-2016-00000061
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