“…[4][5][6][7] Reused steel slag is considered as a trending resource worldwide. 8,9 The reuse of large amounts of steel slag as filling materials will facilitate the conservation of natural resources, reduce waste storage space, and minimize the mining process for raw materials. 6 Currently, steel slag has been widely applied in the construction field, such as being an additive in cement production, [10][11][12][13][14][15][16] embankments, 17 road construction, [18][19][20][21] backfill materials, [22][23][24] and bonded composites.…”