0
  • DE
  • EN
  • FR
  • International Database and Gallery of Structures

Advertisement

Shotcrete 3D Printing ‐ Effect of material‐process interaction on the global and local material density

Author(s):



Medium: journal article
Language(s): English
Published in: ce/papers, , n. 6, v. 6
Page(s): 770-776
DOI: 10.1002/cepa.2822
Abstract:

Shotcrete 3D Printing is a 3D printing process in which the concrete is applied layer by layer using a wet mix process. In the print process, a large number of different process as well as material parameters can be varied, which also influence the hardened concrete properties. A systematic understanding of the interaction between material and process is required to define limits for material and process control variables with respect to the resulting component quality. Therefore, in this paper we present results on the effect of concrete volume flow (0.4; 0.8 m³/h), air volume flow (30; 40; 50 m³/h) and accelerator dosage (0; 3; 6 % by weight of cement) on global density, local density distribution as well as flexural strength. The results show that the combination of an increasing concrete volume flow, a decreasing air volume flow and an increasing accelerator dosage lead to a decrease in global density and flexural strength. A high correlation between the global density and flexural strength can be demonstrated despite the layer‐by‐layer fabrication. In addition, an inhomogeneous density distribution over the cross section is shown. Finally, the underlying mechanisms are discussed regarding the influence of the material and process parameters.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1002/cepa.2822.
  • About this
    data sheet
  • Reference-ID
    10750488
  • Published on:
    14/01/2024
  • Last updated on:
    14/01/2024
 
Structurae cooperates with
International Association for Bridge and Structural Engineering (IABSE)
e-mosty Magazine
e-BrIM Magazine