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can be a valuable selection guide for those who 9. Schallom III, R., “What’s Wrong with This Picture?” are looking to purchase wet-mix or dry-mix equip- Shotcrete, V. 9, No. 1, Winter 2007, pp. 46-49. ment for the first time or for the experienced 10. Schallom III, R., and Ballou, M., “What You Need to shotcrete contractors looking to purchase new Know about Wet-Mix Shotcrete,” Shotcrete, V. 5, No. 1, Winter 2003, pp. 22-27. equipment. It can give specifiers guidance on 11. Seabrook, P. T., “Performance-Based Specifications equipment characteristics that may be appropriate for Shotcrete Contracts,” Shotcrete, V. 13, No. 3, Summer for a particular project. Dry-mix shotcrete has over 2011, pp. 14-17. a 105-year track record and wet-mix shotcrete has 12. Morgan, D. R. “Rusty,” “Performance vs Prescription a 50-plus-year track record. Both processes are Based Shotcrete Specifications,”Shotcrete, V. 1, No. 1, Winter 1999, pp. 10-13. well-proven methods of placing concrete at high 13. Rispin, M., “Reentry into a Shotcreted, Underground velocity and at an economical sustainable price. Heading,” Shotcrete, V. 7, No. 2, Spring 2005, pp. 26-30. Logistics play a key role in the process that will 14. Schallom III, R., “Correct Shotcrete Nozzling work the best for the project. The means and Techniques,” Shotcrete, V. 8, No. 3, Summer 2006, pp. 56-58. methods of shotcrete placement should be left up 15. Bertrand, J., “Shotcrete Supply: Dry or Wet? A to the contractor. In the end, it does not matter Spring 2006, pp. 6-10. Shotcrete, V. 8, No. 2,Shotcrete Supplier’s Perspective,” which process is used as long as the material 16. Bridger, P., “Wet-Mix Shotcrete Nozzles,” Shotcrete, specification is met. Ultimately it is the owner of V. 8, No. 1, Winter 2006, pp. 32. the project who benefits the most from the quality 17. Lukkarila, M., “Low-Velocity Spraying Cementitious and economy of using shotcrete on their job. Material. Is It Shotcrete?”Shotcrete, V. 8, No. 3, Summer 2006, pp. 50-51. References Nozzle,” Shotcrete, V. 15, No. 4, Fall 2013, pp. 22-24.18. Ginouse, N., and Jolin, M., “Material Velocity at the 1. American Shotcrete Association, “Proper Selection of 19. Norton, M., “Wet Process Shotcrete Placement Equipment and Nozzle for ACI Shotcrete Nozzleman Cer - Formula for Nozzleman: M+A+R+V+S=PHD,” Shotcrete, tification,”Shotcrete, V. 15, No. 3, Summer 2013, pp. 18-20. V. 12, No. 3, Summer 2010, pp. 34-35. 2. ACI CP-60, “Craftsman Workbook for ACI Certification of Shotcrete Nozzleman,” American Concrete Institute, Farmington Hills, MI, 2009, 126 pp. 3. ACI Committee 506, “Specification for Shotcrete Ray Schallom III is an under- (506.2-13),” American Concrete Institute, Farmington Hills, ground shotcrete application MI, 2013, 12 pp. specialist and President of RCS 4. ACI Committee 506, “Guide to Shotcrete (506R-05),” American Concrete Institute, Farmington Hills, MI, 2005, 40 pp. Consulting & Construction Co. 5. ACI Committee 506, “Guide to Fiber-Reinforced Inc. He has 40 years of exper- Shotcrete (506.1R-08),” American Concrete Institute, ience as a Project Manager, Farmington Hills, MI, 2008, 12 pp. Owner, and Superintendent. 6. ACI Committee 506, “Guide for Specifying Under- Schallom works with State DOT ground Shotcrete (ACI 506.5R-09),” American Concrete Institute, Farmington Hills, MI, 2009, 52 pp. departments with their shotcrete specifications 7. Schallom III, R., “What You need to Know before and trains engineering companies’ inspectors in Selecting a Wet-Mix Shotcrete Pump,” Shotcrete, V. 11, No. 3, the field of shotcrete. He is a Past President of Summer 2009, pp. 6-8. ASA, past Chair of the ASA Education Committee, 8. Bridger, P., “The Value of Shotcrete Accessories,” and is a member of the ASA Publications, Under- Shotcrete, V. 7, No. 3, Summer 2005, pp. 10-12. 9. Schallom III, R., “Equipment Maintenance,” Shotcrete, ground, Marketing, Sustainability, and Pool & V. 7, No. 3, Summer 2005, pp. 2-4. Recreational Shotcrete Committees. Schallom is also a member of ACI Committees 506, Shot- Additional Resources creting, and C660, Shotcrete Nozzleman Cer - 1. Sofis, T., “Choosing the Right Methods,” Shotcrete, tification, and ACI Subcommittees 506-A, V. 10, No. 3, Summer 2008, pp. 28-29. Shotcreting-Evaluation; 506-B, Shotcreting- 2. Jamieson, D., “Matching Equipment to Process: The Fiber-Reinforced; 506-C, Shotcreting-Guide; Predampener,” Shotcrete, V. 6, No. 3, Summer 2004, p. 26. 3. Keinenburg, M., “Shotcrete Spraying Machines for 506-E, Shotcreting-Specifications; 506-F, Shot- Immediate Support in Tunnels,” Shotcrete, V. 8, No. 2, Spring creting-Underground; and 506-G, Shotcreting- 2006, pp. 20-22. Qualification for Projects. Schallom is a retired 4. Sulman, P., “What Should You Consider When Choosing ACI Certified Nozzleman in the wet- and dry-mix A Wet-Mix Shotcrete Pump?”Shotcrete, V. 7, No. 3, Summer processes for vertical and overhead applications 2005, pp. 14-16. 5. Jolin, M., and Schallom III, R., “Proper Selection of with over 40 years of shotcrete nozzling experi- Equipment and Nozzle for ACI Shotcrete Nozzleman ence in wet- and dry-mix handheld and robotic Certification,”Shotcrete, V. 15, No. 3, Summer 2013, pp. 2-4. applications. He is an ASA-approved Shotcrete 6. Yoggy, G. D., “History of Shotcrete Part 1,” Shotcrete, Educator and an ACI-approved Shotcrete Exam- V. 2, No. 4, Fall 2000, pp. 28. iner for wet and dry applications. Schallom is also 7. Yoggy, G. D., “History of Shotcrete Part 2,” Shotcrete, V. 3, No. 2, Spring 2001, pp. 22-23. a member of ASTM Committee C09, Concrete and 8. Yoggy, G. D., “History of Shotcrete Part 3,” Shotcrete, Concrete Aggregates, and ASTM Subcommittee V. 4, No. 1, Winter 2002, pp. 20-23. C09.46, Shotcrete. Shotcrete • Fall 2015 17


2015FallShotcreteEMag
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