CHINA MINE ENGINEERING

On the basis of Shendong Mining Area, following the principle of obtaining local materials, for theissues of local resources rational development and utilization and the project construction costs reduction, this paper proposes the experimental study on the workability of ultra-fine sand concrete, and the influence of different fly ash ratios on the compressive strength of ultra-fine sand concrete, which is of great significance for the innovative application of fine sand concrete technology. The study shows: ① the correlation between the different proportions and workability of ultra-fine sand concrete; ② the influence of different fly ash ratios on the slump degree of ultra-fine sand concrete; ③ the mechanism of influence of different fly ash ratios on the compressive strength of ultra-fine sand concrete.