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Mining Publication: An Analysis of Fiber-Reinforced Round Panel Strengths and Comparison to Wire Mesh Bag Strength
Keywords: Fibrous shotcrete Point load tests
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: February 2010
Authors: LA Martin, JB Seymour, CC Clark, MA Stepan, RT Pakalnis, M Roworth, C Caceres
Conference Paper - February 2010
Download PDF Document (0.31 MB)
NIOSHTIC2 Number: 20036558
2010 SME Annual Meeting and Exhibit, February 28 - March 3, Phoenix, Arizona, preprint 10-140. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2010; :1-6
Researchers at National Institute for Occupational Safety and Health (NIOSH) are investigating how fiber-reinforced shotcrete mix designs can be extrapolated from proven designs employing wire mesh. This paper explains the results of round determinate panel tests and relates the flexural strength and toughness of fiber-reinforced shotcrete to known energy absorbing properties of wire mesh. The energy absorbed with central deflection is strongly influenced by the amount of fibres. The higher the energy absorption the more load cracked shotcrete can support. Two types of fiber-reinforced shotcrete were investigated, one with steel fiber and another with polyfiber. The residual load supported in Round Determinate Panel Tests can be matched with the strength of wire mesh, thus providing equivalent bag strength values for fiber reinforced shotcrete panels. There is also evidence of a panel crack width comparison to the load holding capabilities of the fiber in the shotcrete mixes. In practice, this provides designers with a method for comparing the ground support provided by fiber-reinforced shotcrete with that supplied by wire mesh.
Image of publication An Analysis of Fiber-Reinforced Round Panel Strengths and Comparison to Wire Mesh Bag StrengthConference Paper - February 2010
Download PDF Document (0.31 MB)
NIOSHTIC2 Number: 20036558
2010 SME Annual Meeting and Exhibit, February 28 - March 3, Phoenix, Arizona, preprint 10-140. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2010; :1-6
See Also
An Analysis of Flexural Strength and Crack Width for Fiber-Reinforced Shotcrete Used in Weak Rock Mines
Load and Deflection Response of Ventilation Stoppings to Longwall Abutment Loading: A Case Study
Numerical Modeling Procedures for Practical Coal Mine Design
A Practical Method of Measuring Shotcrete Adhesion Strength
Refuge Alternatives Relief Valve Testing and Design
A Shotcrete Adhesion Test System for Mining Applications
Tests of Fibre-Reinforced Shotcrete at the Chief Joseph Mine, Butte, Montana
Using the Point Load Test to Determine the Uniaxial Compressive Strength of Coal Measure Rock
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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