Article

RepairStructuralDesigning and Installing a Shotcrete Strengthening Application on the Spokane Street Bridge

Basil Kattula and Roger Runacres

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The Spokane Steet Bridge connects the community of West Seattle to downtown via Highway 99 and Interstate south of the city center. The bridge was not originally and constructed to handle is present-day usage consequently.

Article

UndergroundStructuralInternationalShotcrete for Underground Support

Dr. Rusty Morgan

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In November 1999 I had the opportunity to attend the Third International Symposium on Sprayed Concrete for Underground Support.

Article

StructuralSlope Reinforcement using Shotcrete in Arizona

American Shotcrete Association

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With more than 7,000 cubic yards (5,350 m3) of shotcrete to be used for slope reinforcement in the Mesa­Payson Highway expansion in Arizona, it may be the biggest shotcrete application in the country. The project consists of shotcreting thirteen freshly-cut mountainsides in the Kitty Joe

Article

RepairStructuralNew Mixture Design and Guide Specifications and Inspector’s Manual

Bruce Johnson

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Shotcrete has not traditionally been a material of choice for repair of bridge structures by many state highway departments. One reason for this is that bridge engineers have not been aware of advances in the quality and durability possible with high-performance shotcrete over the last

Article

StructuralInternationalApplication and Testing of Shotcrete

Wolfgang Kusterle

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In 1989, the Austrian Concrete Society pub-lished a Guideline on Shotcrete that subse-quently served as a reference work and a contractual basis for shotcrete works in tunnel con-struction in Austria and abroad. Other standards,such as DIN 18551, focused more strongly on shotcrete for concrete repair

Article

UndergroundStructuralInternationalShotcrete Red Hot in Peru

Hugo Armelin and Denis Blais

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An1amina copper mine is a Sl.2 btltion projcc1 in lhe Andes Mountailh of Peru. The projeci. owned by Canadian mining gi3111S Norandll. J’cck and Rio Afgom, i.s one of the. single largest mining inveso:nents in 1be Americ:iô€€£ at this moment and oomprises the cons1ruction of

Article

UndergroundStructuralThe Use of Steel Fiber-Reinforced Shotcrete for the Support of Mine Openings

Marc Vandewalle

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What separates the support of mining open­ings from the support of similar civil engineering structures is the fact that mine openings have to survive large defonnations as a result of changing stress conditions induced by progressive mining. Steel fibers impart to concrete and shotcrete a

Article

UndergroundStructuralSteel Fiber Reinforced Shotcrete, It is time to find out about it.

Mike Ballou

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In an age when the building, tunneling, and in some areas, min­ing industry, is thriving in North America, we in the shotcrete industry should be looking for ways to increase productivity and save on ever-increasing labor costs. This type of thinking often requires the use

Article

StructuralResearch in Fiber-Reinforced Shotcrete: Bringing Science to an Art

N. Banthia

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Historically and for reasons not entirely clear, shotcrete research has somehow remained out of the mileau of academeic research things have.

Article

UndergroundStructuralInternationalThe Application of Steel Fiber Reinforced Wetcrete as a Support Medium in an Ultra Deep Level Mine – Part 1

Jon Buckley

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Moab Khotsong Mine has, over a period of 2.5 years, successfully placed 36,000 square meters (390,000 square feet) of steel fiber reinforced wetcrete as support to a large number of underground excavations. As a result of these successes, its application will continue to expand. This