Work Item
ASTM WK89707
New Practice for Additive Manufacturing -- Construction and Documentation of Additively Constructed Concrete and Mortar Components
1. Scope
1. This practice is intended to specify the documentation necessary for proper quality control of components produced using additive construction.
2. This practice provides guidelines for analyzing printing timnes and component defects, such as cold joints.
3. This practice is intended to specify data exchange formats and cand calculations for analyzing printer data.
4. This practice addresses the performance assessment of Additively Constriucted Components.
5. This practice specifies construction and quality requirements that should be documented for QC purposes.
6. This practice is not intended to overwrite any Building Code requirements.
Keywords
additive construction; three-dimensional printing; fresh properties print time
Rationale
We would like to propose standard methods of documentation during construction to allow for engineers and inspectors to perform quality control of components produced using additive construction by concrete or mortar extrusion. Currently, there is no standard methods of documentation making it difficult for engineers or inspectors to verify that the components meet design requirments or specification. This practice is intended to define the documentation process and the items to be documented and is focused on practical implementation of documentation. Where the process and form of documentation and data analysis would be defined for items to include, but not limited to: Date(s) of printing, Environmental conditions (hourly temperatures and relative humidities), Component ID, Layer, Height, Time of layer start, Time of printer pause, Time of layer stop, Material ID, Time of Mixture start, Time of Mixture placement in printer system, QC of fresh material data (slump, flow, air content, temperature), Cold joint locations, Reinforcement placement height, Time and duration of reinforcement placement, Time and duration of grouting
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 02-20-2024
Technical Contact: Eric Kreiger