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Automated shotcrete 3D printing: Printing interruption for extended component complexity

Lukas Lachmayer, Robin Dörrie, Harald Kloft, Annika Raatz

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Abstract

This paper introduces a new approach for extending the geometrical freedom of shotcrete 3D printing. Up to now, manual shotcrete manufacturing and the shotcrete printing process has been performed with a continuous material flow to avoid nozzle clogging, which is caused by the solidification of the fresh material within the printing system. However, this requires a continuous printing path for the entire component, which leads to considerable confines in terms of printable geometries. To overcome this restriction, potential factors to control the printing interruption process were determined and quantitatively investigated. Based on 3D specimen data, the most suitable parameter settings for realizing deterministic short term printing gaps without nozzle blockage were identified. For final validation, these settings served in the robotic fabrication of a test element and showed promising results.

Original languageEnglish
Title of host publicationProceedings of the 38th International Symposium on Automation and Robotics in Construction, ISARC 2021
EditorsChen Feng, Thomas Linner, Ioannis Brilakis
PublisherInternational Association for Automation and Robotics in Construction (IAARC)
Pages725-732
Number of pages8
ISBN (Electronic)9789526952413
DOIs
Publication statusPublished - 2021
Event38th International Symposium on Automation and Robotics in Construction, ISARC 2021 - Dubai, United Arab Emirates
Duration: 2 Nov 20214 Nov 2021

Publication series

NameProceedings of the International Symposium on Automation and Robotics in Construction
Volume2021-November
ISSN (Electronic)2413-5844

Conference

Conference38th International Symposium on Automation and Robotics in Construction, ISARC 2021
Country/TerritoryUnited Arab Emirates
CityDubai
Period2 Nov 20214 Nov 2021

Keywords

  • automation
  • concrete construction
  • process control
  • robotic fabrication
  • shotcrete 3D printing (SC3DP)
  • surface scanning

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Control and Systems Engineering
  • Safety, Risk, Reliability and Quality
  • Artificial Intelligence
  • Computer Science Applications

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