利用工业废渣制备充填胶凝材料的研究

为了降低矿山充填成本，以钢渣、矿渣等工业废渣为主要胶凝组分制备充填胶凝材料，研究了电石渣对其性能的影响。借助XRD、SEM测试手段分析了胶凝材料化产物的矿物组成和微观形貌。实验结果表明向充填胶凝材料中单掺15%的电石渣时，充填胶凝材料3、28 d抗压强度分别达到了16.3、38.6 MPa，与未掺电石渣的试样相比，3、28 d抗压强度分别提高了34.7%、26.3%；用25%的矿渣等量取代钢渣时，充填胶凝材料3、28 d抗压强度分别达到了26.4、48.3 MPa，与未掺矿渣的试样相比，3、28 d抗压强度分别提高了63.9%、28.5%，凝结时间缩短。

Study on Preparation of Backfilling Cementitious Material with Industrial Waste

In order to lower high cost in mine backfilling, the effect of calcium carbide slag on the properties of backfilling cementitious material was studied by tests of preparing backfilling cementitious material with industrial waste, such as steel slag and mine slag, as the main component. The mineral composition and morphology of backfilling cementitious material were analyzed by XRD and SEM. The results showed with the addition of 15% calcium carbide slag, the 3 d and 28 d compressive strength of backfilling cementitous materials were 16.1 MPa and 38.6 MPa, and improved by 34.7% and 26.3% respectively comparing that without calcium carbide slag mixed. With the addition of 25% mine slag instead of steel slag, its 3 d and 28 d compressive strength reached 26.4 MPa and 48.3 MPa, and increased by 63.9 % and 28.5% respectively comparing that without the mine slag samples mixed. Moreover, the setting time was reduced.