Work Item
ASTM WK89706
New Practice for Additive Manufacturing -- Fresh and Very Early Age properties of concretes used for Additively Constructed Concrete by Means of Extrusion
1. Scope
1. This practice covers procedures for sampling materials and testing specimens in the laboratory and in-field, for the purpose of determining the fresh properties of concrete and mortar materials used for Additive Construction.
2. This practice provides guidelines for testing fresh properties of additively constructed concrete
3. This practice addresses the fresh performance of additvely constructed concrete by means of testing.
4. This practice is not intended to overwrite any Building Code requirements.
Keywords
additive construction; three-dimensional printing; fresh properties; unconfined compression, flow table
Rationale
We would like to propose initial practice to sample and test the fresh properties by means of unconfined compressive tests and flow table tests. The practice is intended to define the design criteria for the additive construction process. This practice will allow contractors and engineers to know the material properties of materials used to produce components by means of additive construction during its fresh state. This practice will allow contractors to create correlations between the fresh mechanical performances of additive constructed concrete and mortars with printing parameters of the process. This practice will allow architects and engineers to have better understanding of the building components produced by additive construction and define requirements for utilizing additive construction technology. The principles in this practice will be applicable to additive construction concrete during its fresh state (0 to 120 min).
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