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Results 1 - 10 of 11
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1/1/2011 - Peer reviewed journal articlesA field-expedient test method and portable on site test equipment have been developed to measure shotcrete strength in the first six hours after application.
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9/16/2020 - Research projectsA project to employ state-of-the-art ground control science, in a targeted program of case studies, to develop engineering solutions for ground control hazards in underground metal mines.
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4/1/2015 - Reports of InvestigationsA report on a research study to document and develop safe practices for the use of shotcrete as ground support in underground mines, particularly in underground metal mines operating in weak host rock.
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6/1/2011 - Technology NewsTo develop a portable field-use testing system for conducting ASTM-1550-05 round determinate panel tests.
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6/1/2011 - Technology NewsTo develop a practical method of measuring shotcrete adhesion strength in underground mines.
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6/1/2011 - Technology NewsTo develop a practical method of measuring shotcrete early strength onsite in the first six hours after application using a partial beam test standard, ASTM C 1 16-90.
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1/1/2011 - Peer reviewed journal articlesNIOSH is researching safe practices for the use of shotcrete as ground support in underground mines, particularly mines operating in weak host rock; including a rugged, portable direct tensile test system for measuring shotcrete adhesion strength.
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2/1/2010 - Conference papersThis paper presents the results of tests, describes the portable test system, and addresses some of the design issues encountered in the development of a rugged and reliable method for determining shotcrete adhesion strength in underground mines.
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8/1/2003 - Conference papersThe purpose of this paper is to evaluate the preliminary findings of a long-term underground study of various types of surface support liners, and to examine installation practices that are critical for an effective liner material application.
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8/1/2002 - Conference papersNIOSH has been evaluating developments in sealant support systems for ground control. This paper reviews current technology in shotcrete and membrane development, evaluates a long-term study of sealant materials, and examines installation practices.
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Content source: National Institute for Occupational Safety and Health, Mining Program