Additive manufacturing (AM) of cementitious material has become a popular subject over the last decade. The multidisciplinary nature of this topic has led researchers from multiple areas of expertise such as architecture, engineering, and materials science to collaborate to improve the technology, which does not permit yet to print mixtures with coarse aggregates, but is often referred to as AM of “concrete” or “concrete” printing. An important aspect of research in the area is finding a Portland cement-based mortar with adequate rheological, hardening and strength properties for printing architectural structures. In addition, the properties of fresh and hardened mortar and its deformation behavior affect the shape accuracy of the printed geometries and require designers to adjust the toolpaths and technology to account for issues in the printing. This paper is aimed at studying the deformation of a printed concrete mix, which previous studies have shown to be printable. It is focused on the effect of the number of layers, the number of beads and time on layer height and width. It proceeds through a series of experimental tests and it uses regression analysis to model material behavior. The resulting equations can be used in toolpath design to compensate for such deformation and have more accurate printed geometries subsequently. Future studies will be concerned with linking material properties with material deformation and use results to develop a more generic toolpath generator.

在过去的十年中，胶凝材料的增材制造（AM）已成为热门话题。该主题的多学科性质已导致来自建筑，工程和材料科学等多个专业领域的研究人员进行协作以改进技术，该技术尚无法打印具有粗骨料的混合物，但通常被称为AM “具体”或“具体”打印。该领域研究的一个重要方面是找到一种波特兰水泥基砂浆，该砂浆具有足够的流变，硬化和强度特性，可用于印刷建筑结构。此外，新鲜和硬化砂浆的性质及其变形行为会影响印刷几何形状的形状精度，并要求设计人员调整工具路径和技术以解决印刷问题。本文旨在研究印刷混凝土混合物的变形，先前的研究表明该变形是可印刷的。它着重于层数，珠粒数和时间对层高和宽的影响。它通过一系列实验测试进行，并使用回归分析对材料行为进行建模。所得方程可用于刀具路径设计中，以补偿这种变形并随后具有更精确的印刷几何形状。未来的研究将涉及将材料属性与材料变形联系起来，并使用结果来开发更通用的刀具路径生成器。珠子的数量和时间在层的高度和宽度上。它通过一系列实验测试进行，并使用回归分析对材料行为进行建模。所得方程可用于刀具路径设计中，以补偿这种变形并随后具有更精确的印刷几何形状。未来的研究将涉及将材料属性与材料变形联系起来，并使用结果来开发更通用的刀具路径生成器。珠子的数量和时间在层的高度和宽度上。它通过一系列实验测试进行，并使用回归分析对材料行为进行建模。所得方程可用于刀具路径设计中，以补偿这种变形并随后具有更精确的印刷几何形状。未来的研究将涉及将材料属性与材料变形联系起来，并使用结果来开发更通用的刀具路径生成器。