), School of Civil and Architectural Engineering, Jiangsu University of Science and Technology, No. Based on the dynamic shear modulus, damping ratio, and shear strain of the steel slag tested by the resonant column equipment, the regression analysis of the normalized dynamic shear modulus ratio (G/Gmax) and damping ratio was performed according to equations (3) and (4). Gong, L.-y. The possible reason is that the water content of steel slag was high for loose steel slag with the relative density of 30%, and the pore water viscosity was greater than that of the pore water in dense steel slag under the dynamic loads especially when the shear strain was in the range of 10−5 and 10−4 for high confining pressure. The aged waste steel slag in the test was produced by the Yonggang Company in Zhangjiagang, China, which is shown in Figure 1. Therefore, the steel slag has good dynamic shear resistance and had potential to become a substitute for sand in the practical geotechnical engineering in the future. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The regression analysis of the normalized dynamic shear modulus ratio and damping ratio was performed very well according to the Hardin–Drnevich model. The large amount of Industrial wastes as increased year by year and disposal becomes a very serious problem. Steel slags are used as coarse aggregates in the pavement bases and subbase, providing relatively high binding strength, as well as high frictional and abrasion resistance. Steel slag is a byproduct of iron and steel production by the metallurgical industries. Z. Liu, D. H. Zhu et al., “Experimental studies on dynamic shear modulus ratio and damping ratio of recently deposited soils in Nanjing,”, G. Chen, Z. Zhou, T. Sun et al., “Shear modulus and damping ratio of sand–gravel mixtures over a wide strain range,”, X. If waste steel slag could not be utilized effectively, it will result in a large number of dumping, the occupation of farmland, and pollution of the environment. The unconfined compressive test shows that strength of treated soil increases about 45 and 90% for uncured and cured samples at 30 days. The effect of quantity of steel slag on the mechanical properties of blended mixes with crushed limestone aggregate was evaluated, and a theoretical analysis was employed to estimate the resistance for failure factors such as vertical deformations, vertical and radial stresses, and vertical strains of subbase under overweight trucks loads . The basic requirements of using steel slag as a geotechnical engineering material are that the steel slag must be aged, the rate of powdering shall be lower than 5%, some proper grading shall be adopted, and the diameter of the largest particle shall be small than 5 mm. The comparisons of the dynamic shear properties of the steel slag with those of Nanjing fine sand and Fujian standard sand showed that the steel slag had similar dynamic shear resistance to Fujian standard sand and had potential to become a substitute for sand in the practical geotechnical engineering in the future. The comparison results when the confining pressure is, respectively, 100 kPa, 200 kPa, and 300 kPa are shown in Table 6. Three fitting curves were close together, and the fitting effect was great, showing that it was appropriate to use equations (3) and (4) to fit the normalized dynamic shear modulus and the damping ratio of the steel slag. The overall variation tendency between the dynamic shear modulus and shear strain was basically the same under different relative densities. When the shear strain increased beyond 1 × 10−5, the damping ratio of the steel slag increased rapidly with the increase of shear strain. The maximum dynamic shear modulus was discussed, and the dynamic model of the steel slag was constructed by the Hardin–Drnevich model. The greater the confining pressure was, the larger the dynamic shear modulus was. Copyright © 2019 Liyan Wang et al. The reason for this phenomenon was that the steel slag was in an elastic state when the shear strain was small and the dynamic energy loss was relatively smaller. Blast furnace slag in the granulated form was applied as a granular fill overlay on soft subgrade soil . The expansive soil by mixing the steel slag of 10%∼20% was studied, and some conclusions were achieved that the steel slag could significantly reduce the expansion rate, liquid limit, and plastic index of expansive soil, and that the steel slag of 10%∼20% could improve particle distribution and strength characteristics of expansive soil . As could be seen from Table 4, with the increase of the relative density and confining pressure, the maximum dynamic shear modulus of the steel slag increased. Steel slag is a by-product of the steelmaking process, and the annual output increases continuously with the increase of the steel output. Z. Ling, F. Zhang, Q. L. Li, L. S. An, and J. H. Wang, “Dynamic shear modulus and damping ratio of frozen compacted sand subjected to freeze-thaw cycle under multi-stage cyclic loading,”, P. H. H. Giang, P. O. V. Impe, W. F. V. Impe, P. Menge, and W. Haegeman, “Small-strain shear modulus of calcareous sand and its dependence on particle characteristics and gradation,”, K. Senetakis, A. Anastasiadis, and K. Pitilakis, “Dynamic properties of dry sand/rubber (SRM) and gravel/rubber (GRM) mixtures in a wide range of shearing strain amplitudes,”, W. Zhou, Y. Chen, G. Ma, L. Yang, and X. Chang, “A modified dynamic shear modulus model for rockfill materials under a wide range of shear strain amplitudes,”, H. Zhuang, R. Wang, G. Chen, Y. Miao, and K. Zhao, “Shear modulus reduction of saturated sand under large liquefaction-induced deformation in cyclic torsional shear tests,”, L.-Y. The fitted lines of G-γ were upward with the relative density and confining pressures very serious problem could be by. Commonly murrum soil steel slag used in soil been widely used to improve soil silicon- availability and crop.! That approximately 350 lineal miles of county roads throughout the steel slag used in soil have slag applied their! 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