Opening Letter of RILEM TC QPA - Quality and Performance Assurance of Additively Manufactured Cementitious Composites by Advanced Non-Invasive Techniques

This Opening Letter outlines the objectives and scope of the newly developed RILEM Technical Committee QPA "Quality and Performance Assurance of Additively Manufactured Cementitious Composites by Advanced Non-Invasive Techniques". The letter also provides quick overview of the current stateof- the-art on 3D concrete printing (3DCP) technology, and highlight key issues with regards to sustaining quality of the additive manufacturing process and the corresponding performance of the printed materials and structures. These are followed by discussion on prospect of developing and rationalising suitable non-destructive testing and evaluation methodologies to improve efficiency and quality of 3DCP through review of some previous studies. The letter also identifies potential achievements that can be obtained, and discusses key challenges and strategies in running the TC.