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GeneralACI Committee 506, Shotcreting? Activities Update

Marc Jolin

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ACI Committee 506, Shotcreting, is one of the most active technical committees of the American Concrete Institute (ACI).

Article

GeneralGuide to Shotcrete

Lars Balck

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In 1910, naturalist Carl Akeley introduced a machine he invented to build mortar models of animals at the cement show in New York.

Article

GeneralComparative Evaluation of Transport Properties of Shotcrete Compared to Cast-in-Place Concrete

Lihe Zhang, Dudley Morgan, and Sidney Mindess

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The question is sometimes asked: ?How does the durability of shotcrete compare to that of cast-in-place concrete?? The durability of shotcrete and concrete structures is strongly influenced by their transport properties.

Article

GeneralThe Use of Slag Cement, Alkali-Free Accelerator, and Macro-Synthetic Fibers

Ezgi Yurdakul, Klaus-Alexander Rieder, Niki Jackson, Mick Pawelski, Arthur Kyriazis, and Lukasz Debny

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This paper presents the results of a case study conducted in a wet-mix shotcrete application of a major tunnel construction located in Sydney, Australia.

Article

GeneralReinforcing Bar Shadowing and What You Can Do

Joey Bell

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Nearly all shotcrete projects I come across in my travels consist of some form of steel reinforcement, such as reinforcing bars or welded wire reinforcement.

Article

GeneralAn Approach for Improving the Sustainability of Shotcrete

Ezgi Yurdakul, Klaus-Alexander Rieder, and Diego Granell Nebot

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According to the World Commission on Environment and Development,1 sustainability is defined as ?meeting the needs of the present without compromising the ability of futuregenerations to meet their own needs.?

Article

SafetyGeneralTraffic Construction Safety

Ted W. Sofis

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To work safely in and around heavy traffic there are many things to be concerned about.

Article

GeneralCold-Weather Shotcreting

Raymond Schallom III

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The dry-shotcrete process has a long history with placing concrete pneumatically for over 105 years.

Article

GeneralChanging a Culture Takes Time

Mark Croarkin

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Changing a culture takes time. Missouri?s reputation as a ?Show Me? state stands true as MoDOT engineers had to be shown that shotcrete is a viable solution before they openedup their specifications.

Article

RepairStructuralGeneralThe Need for Shotcrete Provisions for State DOTs

Dennis Bittner

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Many State Departments of Transportation (DOTs) have tried shotcrete in the past and had a negative experience.