Development of the On-Line Gravity-Induced Compression Test: “The Inverse Slugs Test”

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

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 languageEnglish
Title of host publicationFourth RILEM International Conference on Concrete and Digital Fabrication
Subtitle of host publicationDigital Concrete 2024
PublisherSpringer
Pages166-173
Number of pages8
DOIs
Publication statusPublished - 2024

Publication series

NameRILEM Bookseries
Volume53
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

Fingerprint

Dive into the research topics of 'Development of the On-Line Gravity-Induced Compression Test: “The Inverse Slugs Test”'. Together they form a unique fingerprint.

Cite this