One of the difficulties of using some residues, such as those from stones beneficiation (cutting and polishing), is their heterogeneity. This study analyzes the influence of the heterogeneity of waste from wet processing of ornamental stones (marble, granite, slate, among others) on the performance of Portland cement composites when used at a 20% replacement of cement. The mechanical behavior (compressive strength, flexural strength, and elastic modulus) and durability parameters (porosity, water absorption, carbonation, and electrical resistivity) are analyzed. Results indicate that the waste can present considerable heterogeneity while maintaining composites properties, indicating little influence on their physicochemical properties. It can be inferred that the filler effect of the waste compensated to a certain extent the negative effects (the increase in w/c ratio and the reduction of important hydrates) due to reduced cement content, showing its viability as mineral addition, despite its heterogeneity.

使用某些残渣（例如来自石材选矿（切割和抛光）的残渣）的困难之一是它们的异质性。这项研究分析了在以20％的水泥替代量使用时，观赏石（大理石，花岗岩，板岩等）湿法加工过程中产生的废物异质性对波特兰水泥复合材料性能的影响。分析了机械性能（抗压强度，挠曲强度和弹性模量）和耐久性参数（孔隙率，吸水率，碳化和电阻率）。结果表明，废物在保持复合材料性能的同时可以表现出相当大的异质性，表明对其物理化学性能影响很小。