Exhibitor Guide

Adventure Heights – All Abilities Park

Robert Cavaliero, Eden Innovations LLC

Summit GeoStructures constructed a massive water feature for the new Adventure Heights All-Abilities Park in Spanish Fork, UT.  Designed by In Site Design, with input from several local families with kids with special needs, the goal of this park is to have something for everyone, regardless of their abilities.

Known for their ability to replicate natural settings using shotcrete, Summit GeoStructures was asked to design-build an incredible mountain with beautiful waterfalls, an accessible river, waterfall pond, splash pad and faux rock tunnel, grotto, seating areas and planters.  Except for the footings and the suspended slabs, the entire structure was built using shotcrete and single-sided formwork techniques.  The use of shotcrete construction with single sided formwork allowed Summit to accelerate installation to meet the very tight construction schedule on this project.

Summit GeoStructures uses new innovations to provide quality products for their customers.  For Adventure Heights, EdenCrete’s nanotechnology was combined with Xypex to improve the fresh properties, density, strength, and permeability/waterproofing, and durability of all the shotcrete and concrete on this project.  This will allow for many years of activity before maintenance is required for the mountain and water feature, helping to save money throughout the life of the park.

The finished project pictures are incredible and show children of all ages playing together, regardless of their ability, in this massive shotcrete structure.

Carbon Nanotube Admixture – Improvements to Shotcrete

Robert Cavaliero, Eden Innovations LLC

The use of nanotechnology in cement based materials is growing rapidly.  The shotcrete industry stands to benefit from the use of carbon nanotube (CNT) technology because of improvements provided to the fresh and hardened properties of the mix. CNTs improve shotcrete by enhancing the paste rheology and increasing creaminess, reducing waste and dust from rebound, improving adhesion to help stack and carve, and improving air quality for surrounding trades. Shotcrete with CNTs moves through the pump and hose to eliminate obstructions/segregation and to reduce wear and tear on the pump. This combination of benefits improves the application of shotcrete for the contractor.  In hardened shotcrete, the permeability is reduced while strength and durability are increased against abrasion, cracking, etc, providing a better product for the customer regardless of application.

The presentation will provide a brief background on the science behind CNT admixture technology, before exploring a variety of shotcrete projects and contractors who employ nanotechnology to improve their business, and ultimately provide a better finished product for the customer.

The Critical Visual Indicators to Quality Shotcrete Placement that Workers and Inspectors Should Immediately Recognize (But Often Miss)

Oscar Duckworth

Are you ABSOLUTELY SURE that you are properly placing Shotcrete? Does using well chosen materials and strict adherence to the specifications assure quality work? With Shotcrete, numerous steps that are unique to the process are required to achieve acceptable compaction and consolidation. Within these steps, critical visual indicators provide those who know what to look for valuable evidence that these steps are being properly implemented. Shotcrete workers and Inspectors ability to recognize these critical visual indicators is an essential, but often overlooked element to quality placement.

“What? Me Worry?” Things I Wish I Knew Years Ago

Oscar Duckworth

I’m lucky to have survived my first year in the Shotcrete business…What initially appeared as how working with Shotcrete could be the financial opportunity of a lifetime was quickly replaced by how to become an unpaid expert on surviving every imaginable problem that could ever occur with the

process. For me, two specific events became the “breakthrough moments” in my career. Join a lively conversation with several Shotcrete Industry leaders as we share pivotal (and some embarrassing) events that helped each of us move from misery to mastery of this complicated, but fascinating craft.

Use of Steel Fiber Reinforced Sprayed Concrete in the Final Lining of Conventionally Excavated Tunnels

William Geers, Bekaert Corporation

Traditionally, conventionally excavated tunnels consist of a “double shell” type lining.  The initial shell is a FRSC (fiber reinforced sprayed concrete) “temporary” lining that stabilizes the opening after excavation and contain short to medium-term loads. Following installation of a water proofing membrane a traditionally reinforced final cast in-place concrete lining is installed to contain long-term loads and provide durability. This presentation introduces an alternative SFRPSCL (Steel Fiber Reinforced Permanent Spray Concrete Lining) system that is a “single shell” of sprayed concrete.

Automation of Shotcrete Placement

Julien Schaeffer, Université Laval

Marc Jolin, Université Laval

The work conducted over the last 2 years using our recently acquired robotic arm will be presented along with example of practical applications and insights on how automation could improved shotcrete quality.

Understanding Rebound and Placement

Sophie-Isabelle Dionne-Jacques, Université Laval

Marc Jolin, Université Laval

The work of many graduate students has led to what is believed to be a clear understanding of rebound mechanisms. This presentation will focus on the placement phase of shotcrete (wet and dry) and highlight the most important factors affecting rebound and placement quality.  In parallel, a critical analysis will be made of the equipment (mainly nozzle) and their effect on rebound.

ASA’s Introduction to Shotcrete

Charles Hanskat, P.E. (FL), F.ACI, F.ASCE, ASA Executive Director

ASA has been providing a free 1-hour “Introduction to Shotcrete” seminar to engineers, architects, DOTs, government agencies and other specifiers upon request for over a decade. Over that time the in-person seminar has reached many hundreds of specifiers in North America and through webinars around the world. Though originally developed by the ASA Education and Marketing Committees the presentation has been significantly updated over time. A few years ago, we added a benefit to ASA corporate members allowing them to once a year offer the seminar to a firm, agency or specifying group in their area.  Sustaining Corporate members can request 2 seminars a year. The “introduction to Shotcrete” seminar topics includes:

  1. Advantages and benefits using the shotcrete process in a wide variety of applications
  2. Dry-mix and wet-mix processes
  3. Specifications, material considerations, placement techniques, and performance guidelines
  4. Structural considerations for shotcrete placement
  5. Pre-construction, jobsite conditions, curing methods

This is an opportunity to see first-hand what the seminar includes, and how it is presented to specifiers. We also hope it’s an opportunity for you to provide feedback on areas that could be added or improved.

The Process of Double Nozzleing

Derek Pay, Oceanside Construction

Double nozzling is an option that can greatly improve your production and flexibility. This seminar will look at what is involved and when it would be most beneficial, the how, why, when, and safety measures involved.   This will be a practical approach to the system, from both the business and operator perspective.

The Art of Rocks

Dan Pitts, OceanRock Art ltd

Ryan Oakes, Revolution Gunite

The Art of Rocks seminar looks into the process covering:

  • Differences & advantages between sculpting Dry & Wet process shotcrete,
  • difference between production carving (soil nail walls) and ultra realistic sculpting
  • sculpting shotcrete and texturing for color

Shotcrete Art – Concrete Considerations

Dan Pitts, OceanRock Art ltd

Ryan Oakes, Revolution Gunite

Shotcrete Art – Concrete Considerations (Pools, Spas and Water Features) Practically, rock carving is an artform that doesn’t take place just after concrete is placed. This seminar will look at the factors which leads into and contributes towards the final masterpiece, covering topics such as:

  • nozzleman position and shooting angles
  • tools and techniques for different mix designs and final outcome
  • Daily Things to do before shooting

Shotcrete Challenges in 2022 – a panel discussion

Bill Drakeley (Drakeley Pools)

Frank Townsend (Patriot Shotcrete)

Marcus von der Hofen (Coastal Gunite Construction Co)

Moderated by Charles Hanskat (ASA)

The last two years has seen the pool market explode, widespread shortages in labor and materials supply, and COVID related restrictions rifle through your projects. Come hear some seasoned leaders in the shotcrete industry discuss the challenges they face and how they navigated through these “unprecedented times.”  If you have an area of concern you’d like to see addressed, email them to [email protected] and we’ll try to fit it into the agenda.

Robert W Cavaliero
Robert W Cavaliero
Robert W Cavaliero, MCE is the Vice President of EdenCrete Admixtures . Robert supports the EdenCrete sales team and the attack on target markets, focusing heavily on technical presentations, project oversight, and presence within industry associations. In 2009, he earned a Master of Science degree in Civil Engineering from the University of Colorado at Denver with a concentration in concrete materials. Robert lives in Littleton, CO with wife Katherine, daughter Lyric (4-yrs old), and son Jude (5-months old) where they enjoy spending time outdoors in the mountains. Fishing, camping, snowboarding, and hiking are hobbies Robert and his family regularly enjoy.
Oscar Duckworth
Oscar Duckworth
Oscar Duckworth is an ACI Certified Nozzleman with over 25,000 hours of nozzle time. He is both an ASA and American Concrete Institute (ACI) member, active in committee work. He has worked as a nozzleman on over 2500 projects. Duckworth is currently an ACI Examiner for the wet- and dry-mix processes. He serves on the ASA Board of Directors and as Chair of ASA’s Education Committee. He continues to work as a shotcrete consultant and certified nozzleman.
Bill Geers
Bill Geers
Bill Geers is Business Development and Technical Manager North America for Bekaert Underground Solutions. He is a professional civil engineer with over 25 years of experience in the reinforced concrete industry. He is an active member and serves on the ASA Board of Directors. An active member of the American Concrete Institute serving on both ACI 506, Shotcreting, and 544, Fiber Reinforced Concrete, subcommittees. An active member of American Society of Testing Material’s ASTM C09.42, Fiber Reinforced Concrete, and C09.46, Shotcrete, subcommittees. In 2018 he was appointed to serve on the National Academies of Sciences, Engineering, and Medicine Transportation Research Board (TRB) AFF60 Standing Committee on Tunnels and Underground Structures and is a member of the Deep Foundation Institute (DFI).
Dr. Marc Jolin
Dr. Marc Jolin
Dr. Marc Jolin is a Full Professor in the Department of Civil and Water Engineering at Université Laval in Québec City, Canada. He received his Ph.D. from the University of British Columbia, Canada, in 1999. An active member of the Centre de Recherche sur les Infrastructures en Béton – CRIB, his research focuses on shotcrete. A recognized and appreciated researcher and educator, Dr. Jolin is an active member of the American Concrete Institute and the American Shotcrete Association.
Charles Hanskat
Charles Hanskat
Charles Hanskat, P.E. (FL), is Executive Director and Technical Director for the American Shotcrete Association. He is a licensed professional engineer. Hanskat has been involved in the design, construction, evaluation and repair of environmental concrete, marine, building and shotcrete structures for 50 years. He is an active voting or consulting member of many ACI technical and certification committees, as well as former chair of ACI’s Strategic Development Council. He has served on many ASA committees and officer positions ultimately serving as 2014 President of ASA. He also chairs ASTM C09.46 Committee on Shotcrete. Hanskat has been active in professional and technical engineering societies. He served as president of Florida Engineering Society (FES) and a national director of NSPE. He is a fellow member of ACI, ASCE and FES, and an active member of ACI, ASA, ASCC, AREMA, ASTM, and ICRI. He holds a Bachelor’s and Master’s degree in Civil Engineering from the University of Florida.
Dan Pitts
Dan Pitts
Dan is the president of OceanRock Art ltd. in Squamish BC. He is a certified nozzleman in vertical and overhead applications. Ocean Rock Art specializes in artificial rock shotcrete formations from design to completion and also consulting work. He has consulted on ASA award winning projects in past years.

Sophie-Isabelle Dionne-Jacques
Sophie-Isabelle Dionne-Jacques
Sophie-Isabelle Dionne-Jacques is a M.Sc. Student in the Department of Civil and Water Engineering at Université Laval. The core of her graduate studies is to develop an integrated model of shotcrete rebound. Her years of experience as a research assistant allowed her to develop concrete skills that she now builds upon to realize her M.Sc. project. She was a winning member of the concrete canoe project and the Canadian CAPSTONE design competition. She received her bachelor’s degree in civil engineering from Université Laval.

Julien Schaeffer
Julien Schaeffer
Julien Schaeffer is a French student doing his M.Sc. in civil engineering at Université Laval, Québec city, Canada.His research project under the supervision of Dr. Marc Jolin is on the automation and optimization of shotcrete placement. Julien received a bachelor degree in mechanical and industrial engineering from the Arts et Métiers Paristech School, France, in 2020.
Frank Townsend
Frank Townsend
Frank Townsend, is the President of Patriot Shotcrete. Patriot Shotcrete is a Service Disabled Veteran Owned Small Business. Previously, he was the Vice President of Operations for Superior Gunite. Frank transitioned the East Coast Superior Gunite team to Patriot from Superintendent, Estimator, and crew. He is a Civil Engineer graduate of Worcester Polytechnic Institute, in MA, and Master’s Degree from the University of Missouri. Frank served as an Army Engineer Officer who deployed to numerous deployments from Central America to the Middle East. He was selected to Command the HHC Company for the 249th Engineer Battalion where he was in the Army Corps of Engineers leading Disaster relief responding for the Federal government for Emergency work during Natural Disasters. Frank is an active member of ACI 506 and ASA, and currently serves on the ASA Board of Directors. He has been Awarded the US Army Corps of Engineers deFluery Medal and Engineer News-Record New York’s “Top 20 under 40” design and construction leaders in 2016. Some notable projects include below grade wall at the World Trade Center, New York; Structural Shotcrete on the East Side Access Project, New York; Henry Hudson and Bayonne Bridge in New York, just to name a few.