The invention provides a steel
slag mixture water permeability measuring device which comprises a plastic measuring cylinder, an upper support table, a column bracket, a leaking
pipe, a lower supporttable and a circular steel ring. The plastic measuring cylinder is fixed on the upper support table. The upper support table and the lower support table are connected with each other through the column bracket. A through hole 1 is arranged in the middle of the lower support table. The leaking
pipe is arranged on the inner side of the column bracket. The plastic measuring cylinder and the through hole 1 of the lower support table are connected with each other through the leaking
pipe. A switching valve is arranged on the leaking pipe. The through hole 1 of the lower support table is communicated with a drain pipe. The drain pipe and the circular steel ring are both arranged below the lower support table. The drain pipe is arranged on the inner side of the circular steel ring. The device provided by the invention has the advantages of accurate measurement result, simple operation, simple structure, reasonable setting, low production cost and the like.