Abstract
A novel experimental method is developed that allows for on-line high-frequency measurement of the material’s yield stress and stiffness under compressive loading. This loading condition corresponds to the dominating condition directly after extrusion, and the obtained properties are thus essential to controlling the extruded material’s shape and stability. Since these measurements can be conducted at high frequency, they could also be used for quality control. A theory for the design of the experimental setup is developed and applied in a case study. In this case study, the material’s stiffness remains relatively stable after four seconds after the last moment of applied shear. Furthermore, its dependency on nozzle width correlates to the model estimation, which validates the measurement principle. It is concluded that the inverse slugs test is less suitable for measuring process variations since it is relatively labor-intensive. It can, however, be used for an in-depth analysis to quantify the effect of the nozzle design.
Original language | English |
---|---|
Title of host publication | Fourth RILEM International Conference on Concrete and Digital Fabrication |
Subtitle of host publication | Digital Concrete 2024 |
Publisher | Springer |
Pages | 166-173 |
Number of pages | 8 |
DOIs | |
Publication status | Published - 2024 |
Publication series
Name | RILEM Bookseries |
---|---|
Volume | 53 |
ISSN (Print) | 2211-0844 |
ISSN (Electronic) | 2211-0852 |
Bibliographical note
Publisher Copyright:© The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Keywords
- on-line
- Quality control
- slugs test
- yield stress
- Young’s modulus