In recent years, the production of waste materials has increased due to the growth of industrial activities around the world. Therefore, recycling and reusing these waste materials for different applications would make a tremendous contribution to waste elimination and sustainable building construction. The objective of this paper is to investigate the effect of marble and granite waste dust (MGWD) as a result of marble and granite stone processing on concrete properties. To achieve this purpose, a total of 15 mixes were prepared with up to 30% of MGWD cement replacement. After 28-day immersion of specimens in lime-saturated water, they were placed in a NaCl solution with 3.5% by weight for 90 days. Then, splitting tensile and compressive strength, scanning electron microscopy (SEM), open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) tests were performed alongside a statistical analysis. The mechanical results indicate that utilizing MGWD as cement replacement at a maximum amount of 20% does not notably influence the mechanical properties of concrete. The OCP assessment revealed that using 10% of granite and 10% of marble waste dust instead of cement enhances the corrosion resistance of steel rebars embedded in concrete, and also increases the potential compared to the other tested concrete mixes.

近年来，由于世界各地工业活动的增长，废料的生产有所增加。因此，回收和再利用这些废料用于不同的应用将为消除废料和可持续建筑建设做出巨大贡献。本文的目的是研究大理石和花岗岩石材加工后产生的大理石和花岗岩废粉尘（MGWD）对混凝土性能的影响。为了达到这个目的，总共准备了15种混合料，最多可替代30％的MGWD水泥。将样品浸入石灰饱和水中28天后，将其置于含3.5％重量的NaCl溶液中放置90天。然后，将拉伸强度和压缩强度分开，用扫描电子显微镜（SEM）进行分析，进行了开路电势（OCP）和电化学阻抗谱（EIS）测试以及统计分析。力学结果表明，以最大20％的量使用MGWD代替水泥不会显着影响混凝土的机械性能。OCP评估显示，使用10％的花岗岩和10％的大理石废粉代替水泥可以增强埋入混凝土中的钢筋的耐腐蚀性，并且与其他经过测试的混凝土混合物相比，其潜力也更大。