This study attempts to explore the feasibility of using calcium carbide residue (CCR) as a solid alkaline activator to prepare geopolymer binders. A mixture of fly ash and ground granulated blast furnace slag was activated with CCR to prepare one-part geopolymer. A conventional two-part geopolymer activated with sodium hydroxide (NaOH) solution was also made for comparison. The CCR-activated geopolymer with the highest compressive strength was selected to incorporate silica fume to improve its mechanical properties. Effects of the activator type/amount, the ratio of silica fume replacement and the curing age on the properties of geopolymer binders were evaluated. Mechanical behavior was mainly assessed by compressive strength tests, and hydration products were analyzed by FTIR, XRD and SEM-EDX. Also, the content of Ca(OH)₂ in the system was calculated using TGA technique to investigate the effects of silica fume on the pozzolanic reaction. The results revealed that the CCR had high potential as an activator for the preparation of geopolymer binders, and geopolymer activated with 12 wt% CCR had the highest compressive strength. Increasing the CCR dosage could improve the compressive strength, while the addition of excess CCR led to a risk of strength loss. When the activator dosage was less than 8 wt%, the mechanical strength of CCR-activated geopolymer was found to be comparable with that of the NaOH-activated geopolymer. Moreover, the addition of silica fume was proved to enhance the strength of CCR-activated geopolymer. TGA results and SEM images analysis illustrated that adding silica fume to CCR-activated binders could promote the consumption of excessive CCR, facilitate the formation of hydration products and modify the pore structure.

这项研究试图探索使用电石渣（CCR）作为固体碱性活化剂制备地聚合物粘合剂的可行性。用CCR活化粉煤灰和磨碎的高炉矿渣的混合物，以制备一份地质聚合物。为了进行比较，还制备了用氢氧化钠（NaOH）溶液活化的常规两部分地质聚合物。选择具有最高抗压强度的CCR活化地质聚合物以掺入硅粉以改善其机械性能。评估了活化剂类型/用量，硅粉替代比例和固化年龄对地质聚合物粘合剂性能的影响。力学性能主要通过抗压强度测试进行评估，水合产物通过FTIR，XRD和SEM-EDX进行分析。另外，Ca（OH）₂的含量使用TGA技术计算了系统中的烟气，以研究硅粉对火山灰反应的影响。结果表明，CCR作为制备地质聚合物粘合剂的活化剂具有很高的潜力，而以12 wt％CCR活化的地质聚合物具有最高的抗压强度。增加CCR剂量可以提高抗压强度，而添加过量的CCR则可能导致强度降低。当活化剂的用量小于8wt％时，发现CCR活化的地质聚合物的机械强度与NaOH活化的地质聚合物的机械强度相当。此外，已证明添加硅粉可增强CCR活化的地质聚合物的强度。TGA结果和SEM图像分析表明，在CCR活化的粘合剂中添加硅粉可以促进过量CCR的消耗，