Title:
Additive Construction with Cement-Based Materials
Author(s):
Platt
Publication:
Web Session
Volume:
ws_S24_Platt.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/23/2024
Abstract:
Description: Bio: Shawn Platt is a Research Civil Engineer at the National Institute of Standards and Technology (NIST) within the Infrastructure and Materials Group of the Materials and Structural Systems Division. Abstract: Additive Manufacturing (AM) with concrete, also known as 3-D Concrete Printing (3DCP) and more recently Additive Construction (AC) with concrete, is an emerging and rapidly evolving technology in the construction industry. This approach to concrete construction has the potential to change the way cementitious materials are used to create infrastructure components. Automating the placement of concrete materials may improve construction efficiency by eliminating the need to erect formwork, improve infrastructure durability by providing precise control of concrete formulations, and improve construction safety by removing humans from hazardous working environments. Rapid construction enabled by 3DCP techniques can provide shelter to communities affected by natural disasters, build with local materials in hostile environments (e.g., military and mining applications), build taller wind turbine towers to access higher energy winds, and repair concrete in areas which are hard to access with conventional construction equipment. The concrete design and engineering community lacks sufficient knowledge about the performance of 3DCP structures subjected to designed loading scenarios to properly design 3DCP structures for a given application. The role of the printing process in determining the failure mode and a detailed understanding of the relationship between the 3DCP structure’s constituent material properties and structural response are critical to developing performance-based standards and guidelines for 3-D printing construction techniques. Developing this knowledge base and coupling it to measurements of concrete materials in the 3DCP process would mark a significant step toward revolutionizing concrete construction.