SETTLEMENT OF SANDY SOIL IMPROVED BY STEEL SLAG UNDER SEISMIC LOAD

In this study, a circular foundation with dimensions of 100 * 100 mm was used, made of plastic glass material, which was loaded with 4 kg. This foundation is based on sandy soil improved using steel slag, which is an industrial waste resulting from iron and steel factories, with a mixing ratio of (3,6,9,12,15) % using a shaking table influenced by the Halabjah earthquake, Bolunun Earthquake and Ali AL-Gharbi Earthquake, The measured that settlement in sandy soil in the dry and saturated states for each of the three types of earthquakes is measured by the Linear Variable Differential Transformer (LVDT) sensors that are installed on the foundation surface. For unimproved soil, the settling time was four seconds; for soil improved with 15% steel slag, it was fifteen seconds. Additionally, for the three earthquakes, the rate of settlement decline increases with decreasing seismic acceleration. Additionally, the three earthquakes are closely spaced around the initial period of the commencement of settlement. Through the differences in what was done, it was found that increasing the percentage of steel slag led to a decrease in the foundation settlement in the dry and saturated cases by a greater percentage in the dry case than in the saturated case.