EFEECT OF CHANGING SHEAR STRENGTH IN CLAY SOLY IN RESULT OF LEACHING SALT OF NANO SOILS ON THE SLOPE STABILITY

leaching in soils is the imprtant subject in the nanotechnolgy in the of housing and urban development, environment and soil science and agecutre. Environment and soil science and agripment, environment and soil science and agriculture. Leaching resulted in removal salts of agriculture. leaching resulted in removal salts of soil and resulted reduction strenghth and physical propeties of soils. lixiveation of soluble salts cause the change of physical properties as unit weight, void ratio , atterberg limit, hydraulic condutivity and specific gravity Gs in reslult of have become loose the soil structure, strengh parmeters are reduct. one of the effects of reduction strength in solis is instability slopes that finally cause sliding. in this study with carry out series of nano chemical, nano phsyical and strength tests effect of leaching have been appointed and investigated on the north of irans clay soils. this study indicated that in result of leaching the soluble salts and part of the fine particle change the dry unit weight, void ratio, Gs and hydraulic conductivity, also leaching cause the reduction of mechanical properties content of unconfined comprssive strengh,elasticityof modulus.

کلیدواژه ها:

leaching ، clay soils ، nanotechnology ، stability ، salt of soils