Work Item
ASTM WK90347
New Practice for Additive Manufacturing -- Curing and Extraction of Sample from Additively Constructed Concrete and Mortar Components
1. Scope
1. This practice covers obtaining, preparing samples from addively constructed concrete and mortar components.
2. This practice covers curing conditions of addively constructed concrete and mortar components.
3. This practice provides methods for obtaining samples by means of drilling cores or sawing cubes/beams.
4. This practice provides methods for obtaining samples based on aggregate size.
Keywords
additive construction; 3D printing; concrete coring; concrete sawing compressive strength, flexural strength
Rationale
We would like to propose initial practice to extract additively constructed concrete samples for mechanical testing. In practice there is a significant difference between the behavior of cast components versus additively constructed components using cementitious materials. The mechanical properties obtained from samples extracted from components built using additive construction versus cast construction are significantly different, and are in many instances lower in magnitude. The practice is intended to define the methods to obtain samples from additively constructed concrete and mortar components. This practice will provide a universal procedure for producers to extract samples for the determination of material properties. This will provide architects, engineers and approval agencies a means to identify the way that samples are obtained and prepared in-situ or in a laboratory/factory. This practice will allow architects and engineers to have better understanding of sample production for determining the representative mechanical properties of components built using additive construction. The principles in this practice will be applicable to AC building components cured at least 7 days for laboratory and in-situ conditions.
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 04-17-2024
Technical Contact: Eric Kreiger
Item: 000
Ballot:
Status: