A Review on Development of 3D Printable Concrete by Utilizing Agro-Industrial Waste: Evaluation of Fresh Properties

Abstract

Abstract: The primary challenge in achieving 3D printable concrete lies in balancing conflicting characteristics of Pumpability and Buildability. On one hand, the concrete must be sufficiently flowable to be pumped through hoses, while on the other hand, it needs to exhibit enough strength for layer-by-layer construction. Overcoming internal shear resistance due to particle interactions is crucial for pumpability, and the material must also retain its shape after extrusion. This thesis presents a comprehensive study on the optimization of mix proportions for Alkali Activated Concrete (AAC) tailored for 3D concrete printing applications, with a focus on the utilization of Agro-Industrial waste. The primary objective is to optimize the mix proportions of AAC by varying the composition of Agro-Industrial waste, thereby contributing to sustainable construction practices