粉煤灰掺量对矿用水泥基材料抗压强度的影响研究

Influence of Fly Ash Content on Compressive Strength of Mining Cement Based Materials

摘要: 为探究粉煤灰掺量对矿用水泥基材料抗压强度的影响，本研究以水胶比、水泥与粉煤灰比值、聚丙烯纤维掺量为变量，设计正交实验，对材料抗压强度及流动度结果进行数据整理和绘图。极差分析结果显示，水胶比是影响抗压强度的关键因素，低水胶比可显著提升强度；高水泥占比利于早期强度，高粉煤灰利于流动度提高和长龄期抗压强度增长；纤维掺量对抗压强度影响较弱，中水平掺量时韧性最优。试验中粉煤灰掺量对矿用水泥基材料的影响可为工程应用提供参考。

Abstract: In order to explore the influence of fly ash content on the compressive strength of mining cement-based materials, the orthogonal experiment was designed with the water binder ratio, the ratio of cement to fly ash, and the content of polypropylene fiber as variables, and the data of the compressive strength and fluidity of materials were collated and plotted. The range analysis results show that the water binder ratio is the key factor affecting the compressive strength, and low water binder ratio can significantly improve the strength; high cement proportion is beneficial to early strength, and high fly ash is beneficial to the improvement of fluidity and long-term compressive strength; the influence of fiber content on the compressive strength is weak, and the toughness is the best when the fiber content is medium level. The influence of fly ash content on mining cement-based materials in the test can provide reference for engineering application.