The reuse and reincorporation of waste generated in the production processes are becoming increasingly important in the world, due to the double effect that it has in terms of sustainability. The first one is the environmental factor, since the impact generated is reduced by reducing the amount of wastes. The second one is the financial factor, since new products are developed that companies did not initially have, generating financial profitability. Therefore, this research evaluates the possible reuse of waste from gravel and sand wash mud of an aggregate plant as a supplementary cementitious material (SCM) after being thermally activated, seeking to promote the circular economy in the construction materials sector. The physical, chemical, and mineralogical characterization of the waste is presented and its pozzolanic activity was evaluated by means of the SAI‐strength activity index. It was found that despite its low content of clay minerals, the thermally activated waste had very good performance as SCM with SAI between 81 and 106 with a tendency to increase with the age of cure. Showing that this can be a very promising potential use for this kind of waste.

中文翻译：

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骨料厂洗砂泥中废物的价值评估：作为一种辅助胶凝材料的评估

在生产过程中产生的废物的再利用和再结合在世界范围内变得越来越重要，这是由于它在可持续性方面具有双重影响。第一个是环境因素，因为通过减少废物量来减少所产生的影响。第二个因素是财务因素，因为开发了公司最初没有的新产品，从而产生了财务利润。因此，本研究评估了热活化后，骨料厂砾石和洗砂泥产生的废料作为补充胶凝材料（SCM）的可能再利用，以促进建筑材料行业的循环经济。物理，化学，介绍了废物的矿物学特征，并通过SAI-强度活性指数评估了其火山灰活性。发现尽管粘土矿物含量低，但热活化废料作为SCM的SCM在81至106之间具有非常好的性能，并且随着固化时间的增加而增加。表明这对于此类废物可能是非常有希望的潜在用途。