The Validity of the Quaternary Deposits as a Filling Materials in Embankment Dames in Al-Shirqat City / Northern Iraq

The research aims to show the validity of quaternary sediments in north Al-Shirqat district as filling materials for dams. Samples were collected from (4) stations representing these region. Geotechnical examinations showed that this region are clay low plasticity (CL) and alluvial (ML) having values ​​of specific weight ranged between (2.65-2.71). Chemical analyzes gypsum ranges (1.35-8.08) %, percentage total soluble salts (3.61-11.52) while pH ​​were (8.00-8.11). When comparing results geotechnical tests with physical chemical specifications soils according construction works National Center Construction Laboratories Research, 2003, it shows all properties second station identical, well matching volumetric gradient, liquidity limit factor (4,3,1), except ratios dissolved content which out limits (4,3,1).