Author : Mohammed Kadhum Fakhraldin and Zainab Hasan Abdulabbas

Manufacturing process disposable results in huge amounts of waste as undesirable materials and influence the environmental adversely by increasing pollutions. One of these wastes is cement kiln dust (CKD) which is produced by cement plants in all over the world. Utilization of CKD in construction industry is very important as it consumes enormous amounts of CKD, decreases the pollutant impacts on environmental, save further costs of embedding process, and employing CKD as cheap material in civil engineering applications. In this regard, the present study devoted to using CKD to increase the bearing capacity of sandy soil. Several studies have been achieved in this respect by mixing CKD as percentages with the soil. In this work, a new method is introduced by lining sandy soil with CKD in layers of specified thickness. The factors have been discussed; thickness of layer, number of layers, and layers positions. The best position of the CKD layer was specified with direct shear test. The soil was tested in four cases which included 0.15B, 0.2B, 0.25B, and 0.5B, B is the width of the box in direct shear test, and the thickness layer was specified to 0.1B. The results indicate that the best position of the lining layer is 0.5B, and the angle of the internal friction in this case increased about 2.41 times.

Keywords: Sandy Soil, Lining CKD, Bearing Capacity, Stabilization, and Direct Shear test

Article published in International Journal of Current Engineering and Technology, Vol.7, No.2 (April-2017)