Post on 22-Oct-2021
Author
Christopher M. Zynda 35 Years Experience
General Manger JJ Albanese Concrete Shotcrete Division
President Shotcrete Concrete Contractors Association
Past President ASA ACI Committees
506 Shotcrete / 660 Certification ASTM-C209
ASA Approved Underground Trainer ACI Certified Examiner
Copyright Materials
This presentation is protected by US and International copyright laws. Reproduction, distribution, display and use of the presentation without permission of the Author is prohibited. © Shotcrete Concrete Association 2011
Organizations Providing Shotcrete Guidance
American Concrete Institute Guides and Specifications
American Society for Testing and Materials Test Methods and Materials Specifications
2007 California Building Code California Building
Standards Commission
Shotcrete Concrete Contractors Association
Shotcrete Concrete Contractors Association
Is a Non-profit Organization of Contractors ,Engineers and others with common interest in promoting and educating the Concrete industry in the use of Shotcrete (wet mix concrete process) as means and methods for installing Concrete Description of Shotcrete (wmcp) Material is generally delivered with Ready- mix trucks per ACI 318 - ASTM C94 Standard specification for ready mixed concrete. The Aggregates are a combination of coarse and fine aggregates per ASTM C-33. Concrete is pumped thru a system with air- injected at the nozzle to increase velocity and improve the placement of the concrete. The concrete being placed may be vibrated and placed with or without the nozzle in congested and horizontal applications.
Project Specific Mock –up Panels
• Job specific pre-construction test panels • The worst congested Area
Pre-Construction Mock-up
Nozzleman’s helper (Air Lance / Blow pipe operator)
Remove’s rebound / overspray