2023 ASA Shotcrete Convention and Technology Conference

Tom Adams

Thomas Adams has served as the executive director of the American Coal Ash Association (ACAA). Prior to joining the ACAA, he was on the staff of the American Concrete Institute and served as the executive director of the American Shotcrete Association. Mr. Adams has over 30 years of experience in the ready-mixed concrete industry in sales, marketing, and technical services roles. He is a Fellow of the American Concrete Institute and a recipient of the Richard D. Gaynor Award from the National Ready Mixed Concrete Association. Thomas Adams attended Wayne State University, Detroit, Michigan, and Aquinas College, Grand Rapids, Michigan studying strategic business management. He is a native of Detroit and currently resides in Bloomington, Indiana.

Thomas Brennan

Tommy Brennan, USCP Sales Engineer: Mr. Brennan holds a Bachelor of Science in Mechanical Engineering from the University of Massachusetts, Amherst, and has spent his entire career in Construction related roles. After over four years leading construction of major capital projects as a Project Engineer with ExxonMobil in Houston, Mr. Brennan joined USCP in October of 2021 to further his career with cementitious materials. Tommy currently oversees the QC program, assists with Sales and Operations, and leads development of new products for USCP. A detailed understanding of USCP’s product offer has also made Tommy instrumental in sourcing raw materials and admixtures needed to maintain competitive pricing and lead times for manufacturing projects. From an industry perspective, Mr. Brennan is ACI Field Technician I certified and an active member of the American Shotcrete Association as well as the ICRI Baltimore-Washington chapter.

Michael Cetnar

Michael has worked in the concrete pumping industry for 30 years. His job responsibilities have included being a mechanic, a boom truck operator, a trailer pump operator, an operator superintendent and a delivery system salesperson. For the last 10 years, he has been at Conforms as a Regional Manager and Safety Specialist. He is recognized by several organizations as an industry expert. He has also been involved with different organizations to help review and write safety standards for the concrete pumping industry.

Oscar Duckworth

Oscar is an ACI-certified Nozzleman and ASA/ACI examiner for both the wet- & dry-mix processes. He is the incoming ASA Secretary and chairs the ASA Education & Safety Committee. He also leads an ACI nozzleman certification task group to consider how ACI may be able to certify nozzlemen using remotely manipulated nozzles for shotcrete placement.

Christoph Goss

Christoph has a PhD in Mining Engineering and BS in Civil Engineering both from Colorado School of Mines. His work has been mostly in tunnels (hard rock and soft ground), underground mine rehabilitation, ground support design, site investigations, and as resident engineer during construction. He has been an ACI Shotcrete Nozzleman Certification Examiner since 2007 and chair the Underground Committee of the American Shotcrete Association.

Troy Helming

Troy Helming is a Unicorn Founder (with 6 company exits) and a modern-day industrialist. He’s an inventor (60+ patent claims), an elite athlete, an author (1 book + 100s of articles), and a clean energy executive. He’s founded companies that have generated more than $30 Billion of economic impact, and he serves on numerous boards. He’s a longtime wellness practitioner & yogi.

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.

Ross King

Ross King, President Consolidated Shotcrete Inc., 50 years as owner operator in the Concrete Formwork Industry and 16 years in the Structural Shotcrete business. Ranging from Residential Hi-rise to Civil Infrastructure including Subways, Particle accelerator, Avalanche shed, and Elevated LRT guideways.

Sam Lo Grasso

Sam is experienced in the design, management, and construction of underground infrastructure projects. His experience includes the design and construction of various underground structures, including sprayed concrete, cast-in-place tunnel linings, segmentally lined tunnels, cavern linings, slurry walls, and pile walls. Sam is a proficient design manager, who has experience in delivering multi-disciplinary tunnel projects for rail, material handling, water and wastewater, and road infrastructure. Sam is a Professional Engineer licensed in California and New York.

Rachel McDowell

Rusty Morgan

Dr. Dudley R. (Rusty) Morgan, is a Civil Engineer with over 55 years experience in concrete and shotcrete technology and the evaluation and rehabilitation of civil engineering infrastructure. After 10 years in academia in South Africa, Canada and Australia, he returned to Vancouver, BC, Canada, where he worked as a consultant for Wood Plc and its predecessor companies on over 1200 projects all over the world. He was a Founding Member and Past President of the American Shotcrete Association.

Christine Poulin

Christine Poulin, P. Eng., M. Sc., is a Technical Sales Engineer for the Shotcrete, Tunneling and Mining (STM) division for Sika Canada Inc. She received her bachelor’s degree in civil engineering in 2017 at Université Laval in Quebec City, Canada, while working as a research assistant in the Shotcrete Laboratory. In 2019, she received her master’s degree in civil engineering in shotcrete at the same university supported by a Mitacs Accelerate Research Grant and the American Shotcrete Association (ASA). After three years at a material consulting engineering firm in Montreal, Canada, Christine joined the Sika STM-division in 2021, where she focuses on the shotcrete and tunneling markets.

Shaun Radomski

Shaun M. Radomski is a Construction Materials Engineer specializing in concrete and shotcrete technology and the evaluation and rehabilitation of infrastructure. He has 17 years of civil materials engineering and testing experience in Canada and in the United States. Based in Calgary, AB., Mr. Radomski has extensive shotcrete consulting, inspection and testing experience North America wide, all with WSP and predecessor companies, including the use of:
• Wet-mix and dry mix shotcrete;
• Vertical and overhead;
• Shotcrete underground;
• Alkali free accelerator addition at the nozzle; and
• Incorporating steel fibre, polypropylene fibre and natural hemp and cellulose based fibres in shotcrete mixes for added toughness and for controlling shrinkage cracking.
Mr. Radomski has provided consulting, testing and inspection services on projects which involved:
• Construction of structural walls for many underground parking structures in Western Canada;
• Structural repairs of slab soffits, slab bands, walls, columns, culverts and tunnels for parking structures, transit and highway infrastructure, dams, and oil and gas infrastructure;
• Structural modification of reinforced concrete draft tube exits from the turbines in the Ice Harbor Lock and Dam located in the State of Washington, where silica fume modified steel fibre reinforced accelerated wet-mix shotcrete was applied overhead up to 6 feet thick; and
• Using low heat of hydration wet-mix shotcrete mixes designed with 70% slag and a natural cellulose fibre to construct up to 1.5 m thick, heavily reinforced perimeter station walls in six underground stations in Toronto, Canada, which incorporated the “hybrid” shoot and then vibrate shotcrete technology.
Radomski, who received his M.A.Sc. in Civil Engineering in 2005 from Ryerson University, Toronto, ON. Canada, considers himself an advocate for advancing the industry, a collaborative team approach, achieving quality through detailed review and inspection, and encouraging safe work practices.

David Rheault

David Rheault is a Senior Tunnel Engineer at Dr. Sauer & Partners with over 10 years of experience in geotechnical and tunnel engineering. During his career, David has worked on a range of underground projects throughout North America with an emphasis on delivering tailored designs and construction phase services in the transportation industry. Since joining Dr. Sauer & Partners in 2018, David has provided tunneling services from numerical analyses to site supervision and inspection. Most notably, he served as the delegate Engineer of Record for permanent structural works on the Eglinton Crosstown LRT mined stations in Toronto, with 18 m wide caverns and shotcrete final linings. More recently, he is leading the detailed design and construction supervision of shotcrete-lined cross passages on the Eglinton Crosstown West Extension. As an experienced professional engineer, David brings a breadth of practical knowledge from both the design and execution of underground projects.

Frank Townsend

Frank is the incoming ASA President and owner of Patriot Shotcrete and Constructors in the eastern United States. He is chair of both the ACI shotcrete nozzleman and shotcrete inspector certification committees. Frank’s company provides quality shotcrete placement in a wide variety of applications including the heavy civil and underground markets.