Mechanical Behavior of 3D Printed and Textile-Reinforced Eco-Friendly Composites (2024-09)¶

3D printing has revolutionised construction with rapid, cost-effective production of complex designs. However, the growing literature focuses on cementitious mixtures with high energy requirements, neglecting eco-friendly alternatives. Additionally, integrating reinforcement is challenging due to complex geometries and anisotropic nature of printed material. This study explores textile materials as reinforcement, offering shaping ease, strength, and design freedom. Two sustainable mixes were formulated: earth-based and lime-based. Composites of 3D-printed earth reinforced with jute fabric and 3D-printed lime reinforced with jute and glass fibre grids were produced. Flexural, compression, and splitting tensile tests were carried out to assess the impact of textile reinforcement. Results showed improved textile-matrix bonding enhanced load distribution and structural integrity. A second mixing, reducing torque value by about six times from its initial unprintable state, is crucial for lime-based mortar printability. Textile reinforcement increased strength by 142.8% and ductility by 1130.3%, demonstrating its effectiveness for sustainable 3D printing construction.