Download or read book An Investigation of Current Shotcreting Practice and a Study of the Application of High Strength Concrete to Shotcreting in the Mining Industry written by Carmen Letton and published by . This book was released on 1992 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shotcrete written by Dudley Robert Morgan and published by CRC Press. This book was released on 2022-03-29 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shotcrete: Materials, Performance and Use is a comprehensive textbook covering the current state-of-the-art shotcrete technology. It provides an overview of the many and various uses of shotcrete. Shotcrete is well suited for construction of curvilinear structures (domes, shells, bobsleigh/luge tracks, etc.) and overhead shotcrete applications (seismic retrofit, repairs, ground support, etc.) that could not be constructed technically and/or economically using conventional formed, cast-in-place concrete construction methods. It contains chapters on history, shotcrete materials and mixture proportioning, performance, shotcrete research, equipment and shotcrete application. It is also comprised of shotcrete case history examples including buildings and structures, infrastructure repair and rehabilitation, ground support and shoring, underground support in tunnels and mines, swimming pools and spas, and, finally, architectural shotcrete. This text should be of interest to design engineers and architects considering the use of the technology, as well as academics. It serves as a useful guide to contractors using shotcrete in one or more of its many and various applications.
Download or read book Investigation of Shotcrete written by William O. Tynes and published by . This book was released on 1974 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shotcrete written by E.S. Bernard and published by CRC Press. This book was released on 2020-12-17 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reference for shotcrete technologists and practitioners on this method of concrete placement and its great scope for adaptability, optimization, and error. The text assesses laboratory research projects and also focusses on innovative developments in this field.
Download or read book Shotcreting in Australia written by and published by . This book was released on 2008 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Properties of Fiber reinforced and Polymer impregnated Shotcrete written by M. E. Poad and published by . This book was released on 1975 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shotcrete Design and Installation Compliance Testing written by and published by . This book was released on 2015 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The National Institute for Occupational Safety and Health (NIOSH) conducted 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. Shotcrete is the generic name for a mixture of cement, sand, fine aggregate, and water that is applied pneumatically and compacted dynamically under high velocity. The objective of this research is to reduce mine worker fatalities and injuries resulting from rockfall accidents. Although the information, techniques, and technology covered in this publication will impact both the mining and construction sectors, the primary audience is the mining industry with a focus on underground metal mines operating in weak ground conditions. The information and practices covered in this publication relating to the use of shotcrete can be put to use by mining professionals towards improving mine design and ground control plans. The guidance and practices reported in this document will help safety auditors, mining companies, and shotcrete suppliers in improving their shotcrete product specifications and the performance of ground support systems, evaluating ground control plans, and assessing shotcrete quality control. Ground control safety can be improved by providing these groups with a better understanding of the use of shotcrete in weak rock conditions, field test methods and equipment for measuring the strength properties of shotcrete directly at the mine site, and a practical means of conducting quality control during shotcrete applications. Development of Portable Test Machines: NIOSH researchers developed three portable test machines for determining shotcrete strength properties directly at the mine site. These portable test machines can be used to measure the early-age compressive strength of the shotcrete, the flexural load capacity and toughness of the shotcrete, and the installed quality and bond strength of the shotcrete that is applied to underground entries; this enables the test machines to be used to verify safe re-entry times. Onsite testing of as-placed shotcrete allows the mine personnel and shotcrete supplier to determine if the shotcrete is performing to design specifications. Using these shotcrete test machines directly at a mine site allows the support capabilities of the shotcrete to be evaluated in terms of the specific ground conditions, support methods, mining spans, and entry dimensions at the mine. As a result, mine design decisions regarding the use of shotcrete can be made from a much more informed position. Ultimately, this enhanced onsite knowledge of shotcrete strength properties and the quality of shotcrete application techniques can result in better ground support system designs and procedures, thereby reducing the number of fatalities and injuries associated with groundfall accidents. Shotcrete Characteristics and Application: When the shotcrete is applied in-cycle to underground mine surfaces as part of the ground support system, it becomes important to quantify when mining can safely resume under the material. As part of the overall ground support system, shotcrete is typically sprayed on the surface of an underground opening to stabilize the ground and prevent raveling. Shotcrete is also applied at lower water-to-cement ratios than concrete and develops its own unique strength characteristics. In addition, the quality of the applied shotcrete, the competency of the underlying rock, and the load-carrying capability of the shotcrete once cured are of critical importance. The significant shotcrete characteristics examined in this report are: slump, compressive strength, tensile strength, early strength, adhesion strength, and flexural strength. Of these shotcrete characteristics the engineering strength properties that are determined using early strength, adhesion strength, and flexural strength testing methods are the focus of this report. The significant shotcrete tests to determine characteristics examined in this research study are: 1. Slump Test - used to determine (wet) uncured shotcrete consistency. 2. Compression Test - used to measure cured shotcrete compression strength. 3. Tensile Test - used to measure cured shotcrete tensile strength. 4. Early Strength Partial-beam Test - used to measure shotcrete cure strength development over time. 5. Overcoring and Direct-tension Pull Test - used to measure cured shotcrete adhesion strength. 6. Round Determinate Panel Flexure Test - used to measure cured shotcrete load capacity and toughness." - NIOSHTIC-2
Download or read book Shotcreting written by ACI Committee 506 and published by . This book was released on 1966 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Standard Practice for Shotcrete written by American Society of Civil Engineers and published by American Society of Civil Engineers. This book was released on 1995 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shotcrete Elements of a System written by Stefan Bernard and published by CRC Press. This book was released on 2010-02-10 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last twenty years we have witnessed a revolution in ground stabilization in both underground and above-ground applications, thanks largely to the widespread adoption of shotcrete as a medium for support. Shotcrete technology continues to evolve and improve as its utilization increases. From relatively obscure and sporadic beginnings, it ha
Download or read book Shotcrete More Engineering Developments written by Erik Stefan Bernard and published by CRC Press. This book was released on 2004-09-15 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marking a crucial point in the sharing of research, this cutting-edge text spearheads advances in cross-industry expertise. Presenting papers addressing topics ranging from repair, accreditation of nozzlemen, and early-age performance, to the blast resistance of shotcrete linings, the work draws on contributions from individuals across the shotcret
Download or read book Use of Shotcrete for Underground Structural Support written by American Society of Civil Engineers and published by . This book was released on 1974 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shotcrete Practice in Underground Construction written by James William Mahar and published by . This book was released on 1975 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the different suits and face cards in a deck of cards, explains how to hold, shuffle, and deal them, and provides instructions for such games as Aces Up, Go Fish, and Spit.
Download or read book Shotcrete for Underground Support X written by Dudley R. Morgan and published by . This book was released on 2006 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 31 papers presented at the Tenth International Conference on Shotcrete for Underground Support, held in Whistler, British Columbia, September 12-16, 2006.
Download or read book Sprayed Concrete Lined Tunnels written by Alun Thomas and published by CRC Press. This book was released on 2008-10-08 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practising engineers on site, in the design office or in client organizations will find this book an excellent introduction to the design and construction of sprayed concrete lined (SCL) tunnels. The complex behaviour of the early age behaviour of the sprayed concrete requires careful management. This book covers all aspects of SCL tunnelling – from the constituents of sprayed concrete to detailed design and management during construction. Although there is a close interdependence between all the facets of sprayed concrete, few engineers have the right breadth of experience and expertise, and this urgently needs to be transferred to the wider engineering community. Disseminating essential information for tunnelling engineers, Sprayed Concrete Lined Tunnels is key reading for all involved in or studying the process.
Download or read book Shotcreting written by ACI Committee 506 and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
