This study analyses the feasibility of incorporating electric arc furnace dust (EAFD) in the production of self-compacting mortars from the point of view of durability. Two types of EAFD, previously characterized and classified as hazardous waste, were used. Siliceous filler (powder) was replaced at different ratios (25%, 50%, and 100%, by volume). The following self-compacting mortar properties were measured at different curing times: total heat of hydration, compressive strength, ultrasonic pulse velocity, pore size distribution through mercury intrusion porosimetry, shrinkage and mass loss, water absorption by capillary, water absorption capacity, bulk density, skeletal density, open porosity for water, wettability by contact angle measurement, electrical resistivity, and carbonation depth. Although some of properties linked to the durability of the mortars, such as water absorption by capillarity, wettability or carbonation, were negatively affected by the incorporation of the EAFD, the results show the feasibility of replacing siliceous filler at up to 25% and the valorisation of EAFD as a secondary raw material (SRM). This research demonstrated that EAFD can be used as SRM as an alternative to landfills, thereby contributing to the promotion of the new circular economic model pursued by the European Union.

这项研究从耐久性的角度分析了在自密实砂浆生产中掺入电弧炉粉尘（EAFD）的可行性。使用了两种类型的EAFD（以前已将其归类为危险废物）。硅质填料（粉末）以不同的比例（按体积计分别为25％，50％和100％）替换。在不同的固化时间下测量了以下自密实砂浆的性能：水合总热量，抗压强度，超声脉冲速度，通过压汞法测得的孔径分布，收缩率和质量损失，毛细管吸水率，吸水能力，堆积密度，骨架密度，水的开孔率，通过接触角测量的润湿性，电阻率和碳化深度。尽管与砂浆耐久性相关的某些性能（如毛细作用，润湿性或碳化引起的吸水率）受到EAFD的掺入的负面影响，但结果表明，以高达25％的比例替代硅质填料并进行增值处理是可行的EAFD作为次要原料（SRM）。这项研究表明，EAFD可以作为SRM替代垃圾填埋场，从而有助于促进欧盟追求的新的循环经济模式。