Article

RepairStructuralGeneralThe Diversity of Shotcrete

Clint Jenkins, Jason Bossier, and Joe Swann

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It is truly paramount to recognize the diversity of solutions available because of the versatility that shotcrete offers. Shotcrete placement provided more efficient, sustainable and durable concrete solutions in these two cases than could have been achieved with a form-and-pour approach.

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RepairUndergroundGeneralRelieving Water Pressure on Shotcrete Lining by Integrating a Drainage Mesh

Johnny Poulsen & Sergii Tabachnikov

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Underground construction, especially a tunnel, is one of the most complex challenges in the field of civil engineering. Dolenco Drain is an innovative solution which addresses many of the difficulties with controlling or eliminating water pressure in an easy, safe, long-term, and cost-effective manner.

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RepairUndergroundStructuralGeneralSummary of ‘Guideline on the Applicability of Fiber-Reinforced Shotcrete for Ground Support in Mines’

By Rym Msatef and Marc Jolin

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This guide examines and provides a description of the common testing methods used for FRS and how to interpret the information generated for ground support in mines.

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RepairArchitecturalStructuralGeneralGuide to ACI Shotcrete Documents

Lars Balck

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RepairStructuralA Study on Low-Velocity Sprayed Mortars

Christine Poulin and Marc Jolin

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RepairWhy Membership Benefits Refractory Contractors

Ted Sofis

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In March 2024, at the ASA committee meetings in Austin, TX, the question came up about refractory contractors, and why that industry segment is so under-represented in the association. Considering my background, I felt qualified to address the issue. Much of my work involved shotcrete

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RepairUndergroundStructuralThe Rondout Bypass Tunnel Shafts – Shotcrete Lining

Paul Madsen, Bade Sozer, Thomas Hennings, & Eileen Test

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The Rondout-West Branch Tunnel (RWBT), a segment of the Delaware Aqueduct (the Aqueduct), was built from 1937 to 1944 and provides about 50% of New York City’s total water supply. The tunnel is concrete lined and has a finished inside diameter of 13.5 ft (4.1

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RepairStructuralO’Hare Plaza West Drive and Executive Garage Restoration

Joshua Freedland

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While infrastructure projects such as parking garages are often the last projects to be funded due to their utilitarian nature, they are important to the health of commercial properties since they are often the first impression for tenants and visitors. At O’Hare Plaza, the parking

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RepairStructuralThe Neville Island Bridge Project

Ted Sofis

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The Neville Island Bridge Rehabilitation project originally came out for bid in 2018. The bridge is located in Allegheny County, PA and within PennDOT’s District 11. In the bid package, it was noted that construction could not begin until a nesting pair of Peregrine Falcons

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RepairStructuralMoyie Dam Repair: Back to the Future

Mike Newcomb and Leo Waddell

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Moyie Dam at Bonner’s Ferry in northern Idaho started initial construction just before WWII. They shut down construction during the war. After the war was over, the dam went into service in the late 1950s.