This course will discuss the use of shotcrete for structural applications, specifically in below-grade foundation walls. While the use of shotcrete is proven to accelerate construction schedules up to 25%, experience has shown that there are risks associated with this method of concrete placement versus traditional cast-in-place walls. These risks include an increased incidence of voids within the wall, poorly consolidated concrete behind and around rebar installations and damage to traditional waterproofing systems associated with the shotcrete application itself. Each of these factors contribute to a challenging waterproofing project - one that can be completed successfully with a properly designed waterproofing system. During this session, we will cover the benefits and risks associated with shotcrete, how pre-applied waterproofing membrane systems should be designed for critical applications and the challenges that traditional waterproofing membranes face when used with shotcrete construction.

Learning Objectives

  • Compare and contrast shotcrete with traditional cast-in-place concrete walls for below-grade structural applications.
  • Describe how shotcrete installations can provide pathways for water migration and why traditional pre-applied waterproofing membranes fail to address these challenges.
  • Understand the benefits of hydrophilic grout-based shotcrete waterproofing systems and how they deliver differentiated performance in critical waterproofing applications.
  • Examine a case study where a properly designed waterproofing system was successfully used with shotcrete construction.