Article

RepairGeneralDurability of Shotcrete? Corrosion Protection

Jonathan E. Dongell

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In a prior Shotcrete magazine article, Spring 2015, ?Durability and Exposure Conditions of Cementitious Materials ? Deterioration Mechanisms,?1 the author discussed durability as it relates to the placement environment.

Article

RepairGeneralOvercoming Existing Corrosion When Using Shotcrete for Repair

Rachel Stiffler

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For over 100 years, shotcrete has been used in a variety of new construction applications, but one of its major uses is in repair, rehabilitation, and repurposing.

Article

RepairUndergroundGeneralAiming for Extended Service Life with Migrating Corrosion Inhibitors

Ray Schallom III, Jessi Meyer, and Julie Holmquist

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Corrosion of embedded steel reinforcement is a threat to all types of reinforced concrete, leading to cracking, spalling, and a shortened service life of thestructure.

Article

RepairBridge and Highway Repairs Using Shotcrete and Cathodic Protection

Dennis Bittner and Erik Bertrand

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It was once believed that microsilica-enhanced shotcretes could not be used with cathodic protection.

Article

RepairField Guide to Concrete Repair Application Procedures

ACI RAP Bulletin 8

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In th e last 20 years there has been an increase in the need for concrete rehabilitation.

Article

RepairUndergroundEast Side Access Project

Frank E. Townsend III

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In May 2014, Superior Gunite was issued a subcontract by the Michels Corporation to shoot approximately 2000 yd3 (1500 m3) of shotcrete for overbreak build back on the arches of the East Side Access Project?

Article

RepairStructuralRailroad Working Safety

Ted W. Sofis

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Shotcrete, over the years, has had a long common history with the North American railroads.

Article

RepairUndergroundSociété de transport de Montréal—Metro Yellow Line Tunnel Repairs

Kevin Robertson, Patrick Giguere, and Ntam Nda-Ngye

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The Montreal Metro is an underground metro system and the main form of public transportation in the city of Montreal, QC, Canada.

Article

RepairUndergroundStructuralThe Plaza Substation and Queens Structures

Frank E. Townsend III

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The Plaza Substation and Queens Structures provide structural and architectural rehabilitation to existing facilities along the existing 63rd St Station and will tie in from Long Island to the East Side Access project

Article

RepairUnderground55th Street Ventilation Facility

Frank E. Townsend III and Dennis Rubi

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The 55th Street Ventilation Facility is a critical piece of the Eastside Access Program for the New York Mass Transit Authority.