Mechanisms Governing the Behavior of Fresh Shotcrete: Placement and Stability

  1. Prof. F. H. Wittmann
  1. Marc Jolin1,
  2. Denis Beaupr2 and
  3. Sidney Mindess1

Published Online: 23 DEC 2005

DOI: 10.1002/3527606211.ch2

Materials for Buildings and Structures, Volume 6

Materials for Buildings and Structures, Volume 6

How to Cite

Jolin, M., Beaupr, D. and Mindess, S. (2000) Mechanisms Governing the Behavior of Fresh Shotcrete: Placement and Stability, in Materials for Buildings and Structures, Volume 6 (ed F. H. Wittmann), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606211.ch2

Editor Information

  1. ETH Zürich, Institut für Baustoffe, Werkstoffchemie und Korrosion, ETH Hönggerberg, HIF E12, 8093 Zürich, Switzerland

Author Information

  1. 1

    University of British Columbia, Vancouver, Canada

  2. 2

    Laval University, Québec, Canada

Publication History

  1. Published Online: 23 DEC 2005
  2. Published Print: 20 APR 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301256

Online ISBN: 9783527606214

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Keywords:

  • materials for buildings and structures;
  • fresh shotcrete;
  • placement;
  • stability;
  • properties

Summary

Structural shotcrete for above ground and underground applications as well as shotcrete for structural repairs have been applied using the dry process with success for many years. Its unique pneumatic application procedure is characterized mainly by a certain amount of material loss due to rebound and by the maximum build-up thickness which can be applied in a single pass. To understand and control these two characteristics requires an understanding of the mechanisms involved in the placement of a shotcrete layer. The intent of the present work is to study the fundamental characteristic properties of fresh dry process shotcrete. A discussion of the principles of the dry-mix shotcrete process and a few experimental results related to the basic properties of shotcrete are presented. Two distinct phases in the application process are considered: the placement itself, and the stability of the shotcrete layer immediately after its placement.