MycoCurva: stay-in-place fabric formworks for curved veneer-reinforced mycelium building components

Eda Özdemir, Andrea Rossi, Philipp Eversmann
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Abstract

Mycelium-based composites (MBCs) are a promising new class of environmentally friendly materials that can be produced using local materials and grown into a wide range of shapes and designs. Upscaling them to architectural scale, however, remains challenging particularly due to insufficient structural stability and the required manufacturing processes. The necessity of a formwork in the growing process often restricts designs to simple shapes, or requires costly formwork, which limits design flexibility. In preliminary research, the authors introduced 3D wood veneer lattices into MBCs as reinforcement, similar to steel reinforcement in concrete, to provide increased strength and scaffolding. This research combines robotic additive manufacturing of 3D wood lattices with a natural fibre textile, to act as a stay-in-place formwork for planar and curved architectural components. The combined lattice and textile serve as a support structure, eliminating the need for formwork and providing the required structural performance. As MBCs are often subject to large manufacturing tolerances, the fabrication steps that influence accuracy are analysed. Therefore, two prototypes of the same design are compared: one using a temporary formwork, and the other, a stay-in-place formwork. Results show that the temporary formwork provides precise shaping during growth, while the stay-in-place approach, incorporating natural fibre textiles, allows a more organic shape development. The methods are assessed via 3D scanning to compare the physical outcomes against the digital designs, highlighting trade-offs and limitations. This study contributes to sustainable biomaterials research by offering insights into the accuracy and feasibility of these approaches for future construction elements with MBCs.

MycoCurva:用于弯曲贴面增强菌丝体建筑构件的原地织物模板
菌丝体基复合材料(MBCs)是一种很有前途的新型环保材料,可以使用当地材料生产,并长成各种形状和设计。然而,将它们升级到建筑规模仍然具有挑战性,特别是由于结构稳定性不足和所需的制造工艺。在生长过程中,模板的必要性往往限制了设计的简单形状,或者需要昂贵的模板,这限制了设计的灵活性。在初步研究中,作者将3D木贴面格引入MBCs作为加固,类似于混凝土中的钢筋,以提供更高的强度和脚手架。这项研究结合了机器人增材制造的3D木格和天然纤维纺织品,作为平面和弯曲建筑构件的固定模板。结合格子和纺织品作为支撑结构,消除了对模板的需要,并提供了所需的结构性能。由于MBCs通常具有较大的制造公差,因此分析了影响精度的制造步骤。因此,对相同设计的两个原型进行了比较:一个使用临时模板,另一个使用原地模板。结果表明,临时模板在生长过程中提供了精确的形状,而保留在原地的方法,结合天然纤维纺织品,允许更有机的形状发展。通过3D扫描对这些方法进行评估,将物理结果与数字设计进行比较,突出权衡和局限性。本研究通过深入了解这些方法的准确性和可行性,为可持续生物材料的研究做出了贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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