Abstract
Five soil samples collected from different locations in Nineva province with different texture and total carbonate content (126-237 gm/ Kg) . Each soil sample was divided in to two parts the first one was kept on its natural condition however the total carbonate was removed from the second one .The studied upper and lower limits and classification of soil according to casagrande (1948). Indicated that the results both liquid and plastic limits increased as clay content increased . and removed of total carbonate showed that liquid and plastic limits are increased compared with natural soil samples . Medium plasticity group according to casagrande are classified .the result showed that all the soil belonged to inactive clays .
