One of the areas of priority in a circular economy, regarding waste management, regards the valorization of construction and demolition wastes (CDW). This study suggests the synthesis of geopolymeric binders based almost entirely on construction and demolition wastes. Ceramic waste was used as the aluminosilicate precursor of the geopolymer synthesis, while glass waste was applied in the preparation of the activation solution. A fractional experimental design defined the optimum synthesis parameters, based on compressive strength values. The final products were characterized by means of X-Ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The glass waste was appropriately processed in order to prepare the activation solution for the geopolymerization of brick waste. In this work, CDW-based geopolymers were produced with a compressive strength in the range 10–44 MPa. The developed products contained 80–90 wt.% CDWs, depending on the method of activator preparation.

中文翻译：

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为开发含80％以上废物的地质聚合物而对砖和玻璃CDW进行增值

循环经济中有关废物管理的优先领域之一是建筑和拆迁废物（CDW）的增值。这项研究表明，地聚合物粘合剂的合成几乎完全基于建筑和拆除废物。陶瓷废料用作地质聚合物合成过程中的铝硅酸盐前体，而玻璃废料则用于制备活化溶液。分数实验设计基于抗压强度值定义了最佳合成参数。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）表征最终产物。为了制备用于砖废料的地聚的活化溶液，对玻璃废料进行了适当的处理。在这项工作中 基于CDW的地质聚合物的抗压强度为10-44 MPa。根据活化剂的制备方法，所开发的产品含有80-90 wt。％的CDW。