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Quantifying the increase in adhesion strength of shotcrete applied to surfaces treated with high-pressure water.

Authors
Kuchta-ME
Source
Trans Soc Min Metal Explor 2003 Jan; 312:129-132
NIOSHTIC No.
20034252
Abstract
Research is currently being conducted at the Colorado School of Mines in the use of high-pressure water for scaling down loose rocks in underground mine openings. In addition to improved miner safety, the adhesion strength of shotcrete applied to rock surfaces treated with high-pressure water is also increased significantly, resulting in improved overall support capabilities of the shotcrete layer. Test results show an increase in adhesion strength by a factor of four on a concrete test wall cleaned with water at 21 MPa (3,000 psi) as compared to a surface cleaned at 0.7 MPa (100 psi).
Keywords
Mining-industry; Mining-equipment; Safety-measures; Safety-monitoring; Safety-practices; Work-areas; Work-environment; Work-practices; Rock-mechanics; Engineering-controls; Control-technology; Control-methods; Ground-control; Underground-mining
CODEN
TMENAE
Publication Date
20030101
Document Type
Journal Article
Editors
Yernberg-WR
Funding Amount
998611
Funding Type
Cooperative Agreement
Fiscal Year
2003
NTIS Accession No.
NTIS Price
ISBN No.
1873352297
Identifying No.
Cooperative-Agreement-Number-U60-CCU-816929
ISSN
1075-8623
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
WA; CO
Performing Organization
Colorado School of Mines
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