Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link


Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
Search
            ×
                        Mining
                        Mining
                            NIOSH
                            All CDC
                    Submit
                For a full list of topics:A-Z Index
                Advanced Search
            Advanced Search


The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: A Practical Method of Measuring Shotcrete Adhesion Strength
Keywords: Fibrous shotcrete Shotcrete Tensile tests
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: February 2010
Authors: JB Seymour, LA Martin, CC Clark, MA Stepan, RD Jacksha, RT Pakalnis, M Roworth, C Caceres
Conference Paper - February 2010
Download PDF Document (0.41 MB)
NIOSHTIC2 Number: 20036556
2010 SME Annual Meeting and Exhibit, February 28 - March 3, Phoenix, Arizona, preprint 10-137. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2010; :1-9
The National Institute for Occupational Safety and Health (NIOSH) is conducting research to develop safe practices for the use of shotcrete as ground support in underground mines, particularly mines operating in weak host rock. As part of this research, tests were conducted with a commercial poly-fiber reinforced shotcrete mix to develop a practical means of measuring shotcrete adhesion strength. Full-scale tests were conducted in a test frame equipped with concrete panels having three distinct surface roughness profiles. Adhesion test fixtures either embedded or epoxied in the shotcrete were overcored into the underlying concrete, and direct tensile tests were conducted to determine the bond strength of the shotcrete cores to the substrate after a selected shotcrete curing interval (1, 3, 7, 14, 28, or 90 days). Measured adhesion strengths typically ranged from 0.5 to 2.0 MPa depending on the curing age of the shotcrete samples. This paper presents the results of these tests, describes the portable test system components, 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.
Image of publication A Practical Method of Measuring Shotcrete Adhesion StrengthConference Paper - February 2010
Download PDF Document (0.41 MB)
NIOSHTIC2 Number: 20036556
2010 SME Annual Meeting and Exhibit, February 28 - March 3, Phoenix, Arizona, preprint 10-137. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2010; :1-9
See Also
An Analysis of Flexural Strength and Crack Width for Fiber-Reinforced Shotcrete Used in Weak Rock Mines
Bending Fatigue Tests 2 and 3 on 2-Inch 6x25 Fiber Core Wire Rope
Developments in Sealant Support Systems for Ground Control
Early Strength Performance of Modern Weak Rock Mass Shotcrete Mixes
The Long-term Performance of Surface Support Liners for Ground Control in an Underground Limestone Mine
A Shotcrete Adhesion Test System for Mining Applications
Technology News 434 - An 'Insulating' Shotcrete for Heat Abatement in Deep Mines
Technology News 540 - Field-Expedient Shotcrete Adhesion Test System
Technology News 542 - Field Use Round Determinate Panel Test System
Tests of Fibre-Reinforced Shotcrete at the Chief Joseph Mine, Butte, Montana
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
Facebook
        Twitter
        LinkedIn
        Syndicate Mining
        Site BrowserSafety and Health TopicsData & StatisticsMethodologyMine DisastersMSHA Data FilesMine & Mineworker ChartsTools & PublicationsTools You Can UsePublicationsNews & ArticlesResearch ProgramNORA Mining CouncilStrategic PlanMining Program, 2019-2023Miner Health Program, 2020-2030ProjectsContractsFunding OpportunitiesMining LinksAbout UsContact NIOSH MiningEmploymentFacilitiesHistoryVisitor Information NIOSH Homepage
 NIOSH A-Z
Workplace Safety & Health Topics
Publications and Products
Programs


About CDC
					Contact Us
					800-232-4636
 Facebook Twitter Instagram LinkedIn Youtube Pinterest Snapchat
 CONTACT CDC
				Contact Us
							Call 800-232-4636
							Email Us
			ABOUT CDC
				About CDC
							Jobs
							Funding
			POLICIES
				Accessibility
							External Links
							Privacy
							Policies
							No Fear Act
							FOIA
							OIG
							Nondiscrimination
							Vulnerability Disclosure Policy
			CONNECT WITH US
				Facebook
								Twitter
								Instagram
								LinkedIn
							Youtube
								Pinterest
								Snapchat
								Email
			LANGUAGES
				Español
							繁體中文
							Tiếng Việt
							한국어
							Tagalog
							Русский
							العربية
							Kreyòl Ayisyen
							Français
							Polski
							Português
							Italiano
							Deutsch
							日本語
							فارسی
							English


U.S. Department of Health & Human Services
			Accessibility
			External Links
			Privacy
			Policies
			No Fear Act
			FOIA
			Nondiscrimination
			OIG
			Vulnerability Disclosure Policy
			USA.gov


Exit Notification / Disclaimer Policy Close
 Links with this icon  indicate that you are leaving the CDC website. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
				Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
				You will be subject to the destination website's privacy policy when you follow the link.
				CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website. Website Disclaimers
 Cancel Continue