Cemented paste backfill (CPB) favors the sustainable development of mine industry. However, as the primary cementitious binders in CPB, the high cost of ordinary Portland cement (OPC) discourages CPB utilization. In the present work, low-carbon and low-cost binders activated by Na₂CO₃ supplemented by calcined quarry dust were used in CPB. The binder was prepared using a ‘one-part’ method. It was found that binders prepared using 8% Na₂CO₃ and 5% CQD show the best performance. The superior properties of the binders were attributed to the promoted binder hydration and special phase assembles of the hydration products. Cost and carbon emission analysis showed that Na₂CO₃ activated binder was cheaper and greener. The cost and CO₂ emission of binder B8Q5 were lower than OPC by around 34.16% and 87.76%, respectively. Besides, leaching tests showed that all the toxic metals were stabilized, which posed no environmental risk.

水泥浆回填（CPB）有利于矿山行业的可持续发展。然而，作为 CPB 中的主要胶结粘合剂，普通硅酸盐水泥 (OPC) 的高成本阻碍了 CPB 的使用。在目前的工作中，CPB 中使用了由 Na ₂ CO ₃活化并辅以煅烧的采石场粉尘的低碳低成本粘合剂。粘合剂是使用“单份”方法制备的。发现使用 8% Na ₂ CO ₃和 5% CQD制备的粘合剂表现出最佳性能。粘合剂的优异性能归因于促进粘合剂水化和水化产物的特殊相组装。成本和碳排放分析表明，Na ₂ CO ₃活性粘合剂更便宜、更环保。粘合剂B8Q5的成本和CO ₂排放量分别比OPC低约34.16%和87.76%。此外，浸出测试表明，所有有毒金属都稳定下来，不构成环境风险。