Size effect of compressive strength of cemented backfill

This paper researches relation of compressive strength of cemented tailings fill and size、geometries of cemented backfill.The test results show under same condition compressive strength of cemented tailings fill will minish with size increasing,it show itself non-linear variety.150mm diameter cylinder specimen fill strength averaged approximately three-quarter of 72mm and 85mm diameter cylinders specimen,about three fifths of 70.7mm cubes specimen.