Abstract The concrete industry is facing new digital shaping processes that still have to be optimized and that require cement-based materials, for which fresh properties requirements are yet to be defined. In this paper, we first present the state of the art in the field of numerical simulations of concrete flow. We then focus on the literature on numerical simulations of extrusion-based additive manufacturing processes for concrete. Our review shows that the available numerical modelling tools are able to detect and predict various type of failures through the printing process, no matter if these happen at the scale of the nozzle, of one printed layer or of the entire object being printed. As they allow for a systematic evaluation of the influence of the entire range of material, geometric and process parameters, numerical modelling is a valid option to optimize both process and material.

中文翻译：

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混凝土加工的数值模拟：从标准成型铸造到增材制造

摘要 混凝土行业正面临着新的数字成型工艺，这些工艺仍然需要优化，并且需要水泥基材料，而水泥基材料的新特性要求尚未确定。在本文中，我们首先介绍了混凝土流动数值模拟领域的最新技术。然后，我们专注于基于挤压的混凝土增材制造工艺数值模拟的文献。我们的审查表明，可用的数值建模工具能够通过打印过程检测和预测各种类型的故障，无论这些故障是发生在喷嘴、一个打印层还是整个打印对象的规模上。由于它们允许对整个材料、几何和工艺参数范围的影响进行系统评估，