Engaging Short Course

Short Courses are an excellent training opportunity to learn about new technologies, innovations and practical applications used in today's tunneling and underground construction industry.

Shotcrete in Underground Construction

Sunday, June 11, 2023 | 8:00 am - 4:00 pm | $400 Member | $510 Nonmember

Short courses are an additional ticketed function

Course registration includes:

7 PDH
Lunch and coffee breaks
Course materials

Overview

This course is designed to provide a solid understanding of shotcrete for ground support in underground construction. It is intended for industry professionals including owners, engineering students, designers, contractors, consultants, and suppliers involved in the design, planning, and construction of tunneling projects utilizing shotcrete.

Content

1. Overview of shotcrete
   1. History
   2. Applications
      1. Surface
      2. Underground
   3. Terminology
   4. References/guidelines
2. Mix Design
   1. Cement/cementitious materials
   2. Aggregate
   3. Admixtures
   4. Air entrainment
   5. Batching
3. Reinforcement
   1. Rebar
   2. WWF
   3. Fibers
4. Site considerations
   1. Concrete supply (truck access, site batching and delivery, etc)
   2. Pump or gun locations (double pumps, long drops from surface, through manholes, etc.
   3. Air compressor and water pump locations (wet and dry differences)
5. Surface preparation
   1. Concrete, soil, rock, masonry
6. Water control
7. Equipment
   1. Wet mix
   2. Dry mix
   3. Equipment – Hand
   4. Equipment - Robotic
8. Placement
   1. Proper Techniques
   2. Hand placement
   3. Robotic placement
   4. Finishing
   5. Curing
   6. Hot Weather
   7. Cold Weather
9. QA/QC
   1. Test panels
   2. Cores
   3. Pull out testing (bond strength)
   4. Field observations
   5. Qualification panels
   6. Early strength testing
   7. 3D Scanning
10. Repair and Rehabilitation
11. Safety
12. Case studies

Instructors:

Charles Hanskat, American Shotcrete Association Executive Director
Christoph Goss, PhD, PE, PMP, F.ASCE, Senior Associate / Tunnels & Underground, Schnabel Engineering
Lauro Lacerda, Senior Account Manager, Normet Americas, Inc.