Using Steel Slag as Soil Additive and Interaction with Lime in a - Low Plasticity Clay

In this study, the using as an additive of steel slag ((Basic Oxygen Furnace Slag-BOS)) was investigated with the aim of improving clayey soils. In this way, while improving geotechnical properties of clayey soils, ensuring a high tonnage industrial waste recycling will be provided. Investigation of effect of BOS on the low plasticity clay, behalf of the examination of interactions with different additives was investigated in combination with powder lime. Samples were reconstituted by adding various percentages (by weight) of BOS, lime and both of them. The experiments were applied on the samples in according to the ASTM D4609 which about chemical soil stabilization. According to experimental results, at the end of the 28 days, unconfined compression (qu) value of Uzun iftlik clay is 350 kPa and its strain is 12%. When %5 lime and %3.33 BOS were added in clay, qu value increases approximately 11 times and takes on the value 4000 kPa and the strain values of the mixture are decrease %2. Same mixture increased approximately 23 times of soaked CBR values, reached from %6 to %135.The results of this study show that, steel slag, currently known as an industrial by-produce, caused by increases on the strength of properties of clays in the desired direction and if it is used with lime, much more effective. So, steel slag can be used as an additive on the low plasticity clayey soil.