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Готові списки джерел за темами / Shotcreting

Добірка наукової літератури з теми "Shotcreting"

Автор: Grafiati

Опубліковано: 4 травня 2022

Оновлено: 5 травня 2022

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Статті в журналах
Дисертації
Книги
Частини книг
Тези доповідей конференцій

Статті в журналах з теми "Shotcreting":

1

Karpannen, T. M., and M. K. Koskinen. "Shotcreting automation." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 28, no. 6 (November 1991): A373. http://dx.doi.org/10.1016/0148-9062(91)91470-c.

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2

Qin, Yan, Guo Tao Liu, Ze Ming Tong, and Yong Chen. "Development and Application of Shotcreting Castable for Steel Ladle." Advanced Materials Research 396-398 (November 2011): 848–53. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.848.

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The article mainly introduct the development and application of shotcreting castable for metallurgical steel ladle. The shotcreting castable mainly use tabular alumina, white fused corundum, fused spinel, aluminate cement, alumina micro powder, fused magnesium as raw material, After studied by the workability and physical properties of gunning machine, it is proved by application in steel ladle, the shotcreting castable has a good workability, with higher adhesive rate, faster hardening speed, better thermal shock resistance and stronger erosion resistance ability. So the shotcreting castable has a higher service life.

3

Karasev, Maksim, and Roman Sotnikov. "Prediction of the stress state of the shotcreting support under repeated seismic load." Записки Горного института 251 (October 29, 2021): 626–38. http://dx.doi.org/10.31897/pmi.2021.5.2.

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The article assesses the impact of repeated blasts on the stress-strain state of the shotcreting support, which negatively affects the bearing capacity of the support and can lead to the formation of local rock falls in places of significant degradation of the shotcreting strength. Despite the fact that a single seismic load usually does not have a significant impact on the technical condition of the shotcreting support, repeated dynamic loading can lead to the development of negative processes and affect the safety. The article considers unreinforced and dispersed-reinforced shotcreting concrete as a shotcreting support. Models of deformation of rock and shotcreting support have been studied. To describe the deformation model of a rock mass, an elastic–plastic model based on the Hook-Brown plasticity condition has been accepted, which accurately describes the elastic-plastic behavior of a fractured medium. When performing the prediction of the stress-strain state of the shotcreting support, a model of plastic deformation of concrete with the accumulation of Concrete Damage Plasticity (CDP) was adopted, which allows to comprehensively consider the process of concrete deformation both under conditions of uniaxial compression and stress, and with minor edging draft. At the first calculation stage, a forecast of the seismic waves propagation in the immediate vicinity of the explosive initiation site was made. At the second stage, forecasts of the seismic waves propagation to the mine working and the stress-strain state of the support were made. On the basis of the performed studies, a methodology for assessing the impact of repeated blasts on the stress-strain state of the shotcreting support of the mine working is proposed.

4

Ono, Koichi. "Health and safety in shotcreting." Tunnelling and Underground Space Technology 11, no. 4 (October 1996): 391–409. http://dx.doi.org/10.1016/s0886-7798(96)00043-0.

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5

Xiao, Li Ping. "Mining Shotcreting Support Design Availability Analysis." Advanced Materials Research 962-965 (June 2014): 930–34. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.930.

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6

Sharapov, R. R., V. V. Yadykina, M. A. Stepanov, and B. A. Kitukov. "Methods of equipment choice in shotcreting." IOP Conference Series: Materials Science and Engineering 327 (March 2018): 042115. http://dx.doi.org/10.1088/1757-899x/327/4/042115.

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7

Tamura, Takeshi, Toshihisa Adachi, Masahiko Umeda, and Tetsuya Okabe. "On the tunnel support mechanism of shotcreting." Doboku Gakkai Ronbunshu, no. 603 (1998): 11–20. http://dx.doi.org/10.2208/jscej.1998.603_11.

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8

Yu, Zhong Jie, Mi Hwa Lee, and Hyun Do Yun. "Mechanical Properties of Sprayable Fiber Reinforced Strain-Hardening Cement Composite (SHCC)." Applied Mechanics and Materials 372 (August 2013): 211–14. http://dx.doi.org/10.4028/www.scientific.net/amm.372.211.

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The use of strain-hardening cement composite (SHCC), which exhibits metal-like deformation behavior and has ability to restrict crack opening, as a retrofit material for seismic retrofitting of existing infrastructures, has been the subject of high expectations. In this work, Three SHCC mixtures including different chemical or mineral admixtures were prepared and evaluated based on the mechanical properties, such as flow, sprayability, compressive and uniaxial tensile performances. All SHCC mixtures were reinforced with polyvinyl alcohol (PVA) fibers at volume fraction of 2.2%. Mechanical properties of each SHCC mixture were measured and evaluated after mixing, pumping, and shotcreting. Experimental results indicated that the compressive strength and elastic modulus of three SHCC mixtures increased almost linearly according to shotcreting procedure from mixer to nozzle. And the uniaxial tensile of SHCC mixture (SHCC-AE) with AE agent was superior to the other SHCC mixtures (SHCC-MC and-N).

9

TANAKA, HIDETOSHI. "Development of shotcreting with torkret in Ikeshima coal mine." Shigen-to-Sozai 106, no. 11 (1990): 645–47. http://dx.doi.org/10.2473/shigentosozai.106.645.

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10

Araki, Akitoshi, Tsugio Nishimura, and Taketo Uomoto. "Estimation of Mix Proportion of Shotcrete and Shotcreting Mechanism." Concrete Research and Technology 11, no. 2 (2000): 1–10. http://dx.doi.org/10.3151/crt1990.11.2_1.

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Більше джерел

Дисертації з теми "Shotcreting":

1

Cabrera, Plasencia Julio Joaquín, and Garay Henrry Christian Leonardo. "Gestión de calidad en el proceso de lanzado de shotcrete en túneles." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1329.

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La investigación realizada es no experimental y de enfoque cualitativo en su mayor parte y cuantitativo en lo que resta, con alcances descriptivos y explicativos. El enfoque principal de nuestra investigación fue el problema del deficiente lanzado de Shotcrete en túneles, producto de una inadecuada gestión de la calidad, teniendo como fundamental objetivo elaborar una propuesta de gestión de calidad con la finalidad de optimizar el proceso de lanzado de Shotcrete en túneles, usando la conocida guía para la gestión de proyectos PMBOK a través de esta podemos deducir que siguiendo el área de conocimiento de gestión de la calidad alinearemos los procedimientos aprobados con el control respectivo en las distintas áreas o frentes de trabajo, además de realizar un continuo seguimiento de estos procesos con auditorías internas y externas. Se adoptó una metodología de recopilación de información, estudio y aplicación del área de conocimiento del PMBoK, determinación de cantidades de Shotcrete usado en el caso de estudio donde se analizó los costos y tiempos, y se evaluó los diferentes procesos que están relacionados con el sistema de Shotcreteado. Concluyéndose que el uso del sistema de gestión de calidad bajo los lineamientos del PMBoK es una guía de gran importancia para la aplicación en procedimientos constructivos debido a que nos señala las pautas adecuadas para la planificación, seguimiento y control de cada proceso con la finalidad de retroalimentarlo continuamente y mejorarlo si fuera el caso necesario. The investigation is a non-experimental research, mostly qualitative and quantitative in the rest with descriptive and explanatory scopes. The main theme of our investigation was the problem of the deficient Shotcrete spraying in tunnels, product of an inadequate management of the quality, having as principal scope the elaboration of a proposal for Quality Management with the purpose of optimizing the process of Shotcrete spraying in tunnels, with the known guide for the project management PMBOK. Using this guide, we can determinate that following the Quality area of knowledge we will align the procedures approved with the respective control in the different areas or fronts of work, moreover, monitoring of these processes with internal and external audits. There was adopted a methodology of summary of information, study and application of the area of knowledge of the PMBoK, determination of Shotcrete quantities used in case of study where the costs and schedules were analyzed, and there were evaluated the different processes that are related to Shotcreting System. Concluding that Quality Management of the PMBoK is a guide of great importance for the application in constructive procedures due to the fact that indicates the guidelines for planning, assurance and control of every process with the purpose of control and improvement if it was necessary.

2

Сливчук, Роман Іванович. "Технологія торкретування для відновлення захисного шару залізобетонних конструкцій при ремонті та реконструкції". Магістерська робота, 2021. https://dspace.znu.edu.ua/jspui/handle/12345/6583.

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Сливчук Р. І. Технологія торкретування для відновлення захисного шару залізобетонних конструкцій при ремонті та реконструкції : кваліфікаційна робота магістра спеціальності 192 «Будівництво та цивільна інженерія» / наук. керівник В. І. Анін. Запоріжжя : ЗНУ, 2021. 110 с.
UA : В роботі на основі аналізу та систематизації даних наукових досліджень виявлені принципи втрати експлуатаційної придатності залізобетонних конструкцій. Визначена перевага використання торкретування, яка полягає у можливості повної механізації процесів, та у поєднанні в одній технологічній послідовності транспортування, укладання та ущільнення бетонної суміші. Значну увагу приділено технологічним питанням одержання та застосування у будівельній практиці торкрет-фібробетону, особливостям створення захисних покриттів з використанням цього матеріалу, сформульовані вимоги до підбору вихідних матеріалів для отримання покриттів, а також рекомендації та правила, що стосуються технології їх нанесення. Наведено приклади різних варіантів конструктивних рішень торкрет-бетонних та торкрет-фібробетонних покриттів стосовно підземних та наземних будівельних об'єктів.
EN : The principles of loss of serviceability of reinforced concrete structures are revealed in the work on the basis of the analysis and systematization of the data of scientific researches. The advantage of using shotcreting is determined, which consists in the possibility of complete mechanization of processes, and in combination in one technological sequence of transportation, laying and compaction of concrete mix. Considerable attention is paid to technological issues of production and application of shotcrete-fiber concrete in construction practice, features of creating protective coatings using this material, formulated requirements for the selection of raw materials for coatings, as well as recommendations and rules for their application technology. Examples of different variants of design solutions of shotcrete-concrete and shotcrete-fiber-concrete coverings concerning underground and above-ground construction objects are given.

Книги з теми "Shotcreting":

1

Bourchier, Frazer William. Practical considerations of shotcreting in an underground mining environment. Ottawa: National Library of Canada, 1990.

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2

magazine, Editors of Concrete Construction. Shotcreting: Equipment, Materials and Applications. Aberdeen Group, 1996.

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Частини книг з теми "Shotcreting":

1

Pelletier, Josh, Charles Alt, Chris Parr, Jim Farrell, and Tripp Farrell. "The Next Generation of Monolithic Installation Technology: Continuous Mixing of Low Cement Castables for Wet Shotcreting Applications." In Proceedings of the Unified International Technical Conference on Refractories (UNITECR 2013), 15–20. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118837009.ch3.

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2

"shotcreting (method)." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1224. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_193248.

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3

"Real-time monitoring of the shotcreting process." In Technology Innovation in Underground Construction, 397–412. CRC Press, 2009. http://dx.doi.org/10.1201/9781482266597-25.

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4

Cheng, Yunhai, Guandong Wang, and Shanxin Guo. "Wet shotcreting dual-mode design and dynamic zoning support mechanism and technology for deep shafts." In Mine Safety and Efficient Exploitation Facing Challenges of the 21st Century, 271–77. CRC Press, 2010. http://dx.doi.org/10.1201/b11761-39.

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5

Jin, A., B. Li, Y. Wang, and F. Deng. "Simulation analysis of failure mechanism of roadways in soft rock supported with bolting and shotcreting." In Rock Mechanics: Achievements and Ambitions, 647–50. CRC Press, 2011. http://dx.doi.org/10.1201/b11438-127.

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6

Grigoriev, O., R. Tereschuk, and L. Tokar. "Assessment of economic efficiency AMS-A (anchor – meshwork – shotcreting) support structure in terms of coal mines." In New Developments in Mining Engineering 2015, 85–89. CRC Press, 2015. http://dx.doi.org/10.1201/b19901-17.

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Тези доповідей конференцій з теми "Shotcreting":

1

Terada, Takara, and Ryousei Murakami. "Total Control System for Shotcreting." In 9th International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 1992. http://dx.doi.org/10.22260/isarc1992/0077.

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2

Rong Xuewen, Li Yibin, and Song Rui. "Kinematic analysis of a shotcreting robot." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5536789.

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3

Abazi, Sead, and Bulent Suloodža. "QUALITY CONTROL OF SPRACONCRETE AND POSSIBLE PROBLEMS DURING SHOTCRETING." In GEO-EXPO 2020. DRUŠTVO ZA GEOTEHNIKU U BOSNI I HERCEGOVINI, 2020. http://dx.doi.org/10.35123/geo-expo_2020_5.

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Анотація:

Shotcrete is a modern technology for protecting the excavations in solid rock masses and it is a process where the concrete mass is applied to the surface by means of high pressure. The installation of sprayed concrete requires special equipment, also a lot of attention and well-trained workers. For that purpose, quality controls are performed during each installation of the shotcrete. In order to ensure that the requirements are met, there is: small, normal and more extensive quality control. The frequency of the tests is determined depending on the concrete, the difficulties of installation, the type of the object, etc. Quality control is done before and after the installation of sprayed concrete. Thus, the test for the temperature of the concrete is done in every 100 m³, the thickness of the torque and the compressive strength are measured every 250 m³ of built-in sprayed concrete. However, the conditions prescribed by the project are not always met. Therefore, problems are possible when using this modern technology for protection of excavations. Such problems can occur in various stages, such as: during the preparation, during the installation and after the installation, as well as possible problems caused by the equipment and workers. To eliminate them or minimize them, attention should be paid to several key things, including the period of incorporation of the wet mixture. If the shotcreting is not completed within 2 hours, the hydration process begins, which complicates the work.

4

Cheng, M., Y. Liang, C. Wey, J. Chou, and J. Chen. "Development of a New Dimension and Computer-Aided Construction System for Shotcreting Robot." In 13th International Symposium on Automation and Robotics in Construction. International Association for Automation and Robotics in Construction (IAARC), 1996. http://dx.doi.org/10.22260/isarc1996/0101.

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5

Uomoto, T., and C. Hashimoto. "Recommendation for Shotcreting (Draft) Part "Tunnels by NATM" by the Japan Society of Civil Engineers." In 10th International Conference on Shotcrete for Underground Support. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40885(215)3.

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6

Talbot, Jonathan, and Joe Burke. "Practical improvements to the shotcreting process at Lisheen Mine with particular attention to the mix design and admixture usage." In Seventh International Symposium on Ground Support in Mining and Underground Construction. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1304_44_talbot.

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7

Brencich, Antonio, and Davide Pera. "A low-cost retrofitting technique for masonry arch bridges: experi- mental validation." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0037.

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<p>Retrofitting of masonry bridges often applies the basic concepts of r.c. to masonry bridges, such as in the case of shotcreting the intrados of the arch and transversal tendons through the thickness of the barrel. The result is that retrofitting works often fail in their goals, may be harmful for the bridge and almost always make the historical value of the bridge to be lost to some extent due to invasive works.</p><p>The actual load carrying structure of a masonry bridge is an arch with a span that is shorter than its geometric appearance due to the interaction between the arch and the backfill. Staring from this observation, a new retrofitting technique for increasing the load carrying capacity of a masonry bridges can be identified in the selective injection of the fill. Since injection can be performed from outside, by means of cores through the spandrels, this procedure does not need the traffic on the bridge to be stopped and turns out to be rather cheap. A series of experimental tests on reduced scale models, performed in the Civil Engineering Labs of the DICCA Labs of the University of Genoa, show that this technique may almost double the l.c.c. of a masonry bridge. The similarity conditions for reduced scale models to be tested are discussed in advance.</p><p>Besides, the results of the tests show that the distribution of the load through the fill is not as wide as usually assumed. On the contrary, it is shown that the load is transferred to the arch by means of a kind of “ground column” mechanism activated just below the applied load, i.e. the sleeper for railways and the vehicle wheel for road bridges.</p>

8

Subash, T. R., M. Ananth, and K. Tamilselvan. "Review of IS 9012:1978 qRecommended Practice for Shotcretingq - Recommendations for inclusion and amendment." In Recent Advances in Rock Engineering (RARE 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/rare-16.2016.43.

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9

Ballou, Mike, and Mark Lukkarila. "The Advantages of Using Preblended Dry Materials for Wet-Mix Shotcretein North America." In 10th International Conference on Shotcrete for Underground Support. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40885(215)30.

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