University Of Tehran Press Pollution 2383-451X 4 4 2018 10 01 Influence of In-Situ Scaling on Variability of Polluted Soil Erodibility Parameters 617 633 67706 10.22059/poll.2018.252263.393 EN A. T. Al-Madhhachi Water Resources Engineering Department, Faculty of Engineering, Mustansiriyah University Baghdad 10047, Iraq 0000-0002-0991-455X M. B. Hasan Environmental Engineering Department, Faculty of Engineering, Mustansiriyah University Baghdad 10047, Iraq 0000-0002-1331-5293 Journal Article 2018 02 09 Middle and southern Iraq suffers from polluted soils due to crude oil, spilled on land, leakage from transmitting pipe networks, or petroleum products from refineries. Many researchers have studied pollution impacts on the soil in details, but there is a clear lack of investigation on the influence of crude oil on soil erodibility. Recent researches have investigated the influence of pollution on erodibility parameters, which include critical shear stress (<em>τ<sub>c</sub></em>) and detachment factor (<em>d<sub>c</sub></em>). The variability of <em>d<sub>c </sub></em>and <em>τ<sub>c</sub></em> due to different in-situ scaling has not been thoroughly established for polluted and unpolluted soils. Thus this research aims at investigating the influence of different in-situ scaling ratios (1:1, 1:30, and 1:50) on variability of <em>d<sub>c </sub></em>and <em>τ<sub>c</sub></em> for polluted and unpolluted soils under controlled laboratory conditions, using Jet Erosion Test (JET), and tries to compare the three solution techniques (namely, Blaisdell’s approach, depth scour approach, and iterative approach) to solve<em> d<sub>c </sub></em>and <em>τ<sub>c</sub></em> from JETs for polluted and unpolluted soils. The polluted soil samples have been prepared by submerging the soil surface with crude oil for 24 hours prior to testing. Results show that there have been statistical differences in <em>d<sub>c </sub></em>and <em>τ<sub>c</sub></em> between polluted and unpolluted soil samples on the dry side of water contents with no statistically significant difference of measured<em> d<sub>c </sub></em>and <em>τ<sub>c</sub></em> being observed across different in-situ scale ratios for polluted and unpolluted soils. All told, the study shows less variability of measured<em> d<sub>c</sub></em> and <em>τ<sub>c</sub></em> across different solution techniques, compared to previous study findings. In-situ scaling JET Erodibility of polluted soils Soil erodibility parameters Crude Oil https://jpoll.ut.ac.ir/article_67706_63c4488ef0eebcd97a80c7be838ec857.pdf