Academic literature on the topic 'Pre-grouting'

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Journal articles on the topic "Pre-grouting"

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Kong, Cun Zhi, Xiang Feng Xu, Jia Long Sun, Guang Zhi Qi, and Yuan Cao. "Application of Impact-Echo Method in Grouting Inspection in Ducts inside Prefabricated Box Girder." Applied Mechanics and Materials 505-506 (January 2014): 24–27. http://dx.doi.org/10.4028/www.scientific.net/amm.505-506.24.

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Based on basic principle of detection using impact-echo method, in combination with urgent demand of grouting quality inspection in ducts inside post tensioning type prefabricated box girder in bridge engineering, impact-echo method has been used for non-destructive detection of grouting compactness in pre-stressed ducts inside prefabricated box girder. Verification by beating away measuring points shows that the impact-echo method can accurately locate metal corrugated pipes and qualitatively judge grouting compactness inside prefabricated box girder ducts, to allow effective inspection of gr
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Wang, Xue Gui, Er Xin Gao, Xian Long Sun, Zhen Yu Hao, and Rong Zheng Zhu. "The Application of Pre-Grouting in the Construction of Vertical Shaft." Advanced Materials Research 402 (November 2011): 643–47. http://dx.doi.org/10.4028/www.scientific.net/amr.402.643.

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The paper introduces the application of surface pre-grouting in the construction of the main coalmine and the auxiliary coalmine of Xuandong No.2 coalmine.The engineering has achieved remarkable results for the grouting into more than 700 meters deep. To the characteristics of shaft deep and aquifer centralized, the practical for sealing and grouting scheme has been introduced in this paper. According to the high water pressure in the special aquifer, the special measure of increasing grouting pressure and increasing grouting quantity has been taken and which ensured the grouting effect. The p
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Sun, Yuantian, Guichen Li, Junfei Zhang, Junbo Sun, Jiandong Huang, and Reza Taherdangkoo. "New Insights of Grouting in Coal Mass: From Small-Scale Experiments to Microstructures." Sustainability 13, no. 16 (2021): 9315. http://dx.doi.org/10.3390/su13169315.

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Pre-grouting as an effective means for improving the stability of roadways can reduce maintenance costs and maintain safety in complex mining conditions. In the Guobei coal mine in China, a cement pre-grouting technique was adopted to enhance the overall strength of soft coal mass and provide sufficient support for the roadway. However, there are very limited studies about the effect of grouting on the overall strength of coal in the laboratory. In this paper, based on the field observation of a coal-grout structure after grouting, a series of direct shear tests were conducted on coal and grou
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Li, Chang Chun, and Li Yun Yi. "On Detection Technologies of Pre-Stressed Duct Grouting Fullness." Advanced Materials Research 933 (May 2014): 71–75. http://dx.doi.org/10.4028/www.scientific.net/amr.933.71.

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Aging and deterioration (such as weakening of concrete strength and loss of prestress) of various degree will inevitably happen to prestressed concrete beam in service. In making the prestressed concrete beam, it is of vital importance to ensure that the prestress tension is sufficient, duct grouting is compact enough and concrete pouring is in good quality. Otherwise, structure will deteriorate faster and safety hazard and even bridge collapse may ensue, causing considerable economic losses.
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Kim, Cheehwan. "Pre-reinforcing Grouting a Sand Gravel Layer for Tunnelling." Tunnel and Underground Space 26, no. 6 (2016): 466–74. http://dx.doi.org/10.7474/tus.2016.26.6.466.

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Wang, Hai Bo, Peng Ju Lu, and Qi Zong. "Experimental Study on Highway Tunnel Surrounding Rock Reinforced by Small Pipe Pre-Grouting." Advanced Materials Research 250-253 (May 2011): 2617–21. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2617.

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Small pipe of staggered by length leading-drilling and grouting support technology was adopted for per-reinforcement of Lion-shaped Tunnel typeII rock, cement paste filled into loose rock mass rock fracture for adglutinate broken rock into a integrality, thus enhance the coherence and solidity of rock. Thesis introduced process flow of small pipe drilling grouting, grouting equipment, grouting parameters selection and practical applications. Through tunnel deformation monitoring and analysis, grouting reinforcement has achieved very good effect.
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Zheng, Weihua, Dengwu Wang, Guijin Li, Lin Qin, Kai Luo, and Jinquan Liu. "Optimizing the Grouting Design for Groundwater Inrush Control in Completely Weathered Granite Tunnel: An Experimental and Field Investigation." Sustainability 11, no. 13 (2019): 3636. http://dx.doi.org/10.3390/su11133636.

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Groundwater and mud inrush disaster from completely weathered granite presents a huge difficulty for tunnel construction, which requires the grouting measurement with favorable performance. To propose the optimal material parameters for grouting, numerous tests, including strength, permeability, and anti-washout, were conducted to evaluate the effects of grouting filling ratio (GFR), curing age and water velocity on the grouting effect. The test results show that: (1) The hydraulic property of completely weathered granite can be significantly improved by increasing the grouting volume and curi
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Geng, Tiesuo, Shuanghua Chen, Liuqun Zhao, and Zhe Zhang. "Research on Bonding Performance of Anchorage Caisson Foundation with Different Contact Surfaces and Grouting Bed." Buildings 11, no. 8 (2021): 365. http://dx.doi.org/10.3390/buildings11080365.

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In view of the first domestic offshore suspension bridge with caisson foundation, this paper mainly studies the bonding properties between underwater pre-filled aggregate grouting bed and anchorage caisson foundation. Through the test, the cohesive force of adding ordinary concrete between the anchorage caisson foundation and the grouting bed, the cohesive force of adding paper base asphalt felt between the anchorage caisson foundation and the grouting bed, and the cohesive force of adding geotextile between the anchorage caisson foundation and the grouting bed are measured, respectively. When
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Zhang, Guo-Hua, Yu-Yong Jiao, and Hao Wang. "Outstanding issues in excavation of deep and long rock tunnels: a case study." Canadian Geotechnical Journal 51, no. 9 (2014): 984–94. http://dx.doi.org/10.1139/cgj-2013-0087.

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Excavation of deep and long tunnels faces several distinctive challenges such as unknown geological structures, high groundwater pressure, and high in situ stress, as compared with conventional tunnels. The deep and long Taining tunnel in Fujian Province, South China, was excavated in complex geological settings. This tunnel had to pass through various squeezing fault zones and intensely jointed zones. Large deformations and high-pressure groundwater were frequently encountered during excavation. To predict the potential adverse geological structures, a comprehensive method, which included tun
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Rabaiotti, Carlo, Cornelia Malecki, Mathias Amstad, and Alexander M. Puzrin. "Pre-stressing of soil and structures due to jet grouting." Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 168, no. 4 (2015): 335–47. http://dx.doi.org/10.1680/geng.14.00112.

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Dissertations / Theses on the topic "Pre-grouting"

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Brynjolfsson, Brynjolfur. "Evaluation of the Grouting Methodology used in the Stockholm City Line Project." Thesis, KTH, Jord- och bergmekanik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147619.

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As part of the Stockholm City Line project a grouting design was conducted and documentedduring the planning phase, based on theoretical grounds. This comprehensive design is the first of its kind for a tunneling project in Sweden. Due to the scale of the undertaking, the general design was ordered by the Swedish Transport Administration (Trafikverket) to apply for the pregrouting operations at the City Line’s rock tunnels. During the local design however, the grouting work developed differently within each sub-project from what was prescribed by the original design. This thesis project was ca
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Book chapters on the topic "Pre-grouting"

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Log, S., D. Ofiara, A. Bruland, and P. Jakobsen. "Pre-treatment of ground in hard rock TBM tunneling: probe drilling and pre-grouting." In Underground. The Way to the Future. CRC Press, 2013. http://dx.doi.org/10.1201/b14769-177.

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Aldorf, J., and K. Vojtasik. "Effectiveness of zonal ground mass pre-stressing round an opening at grouting." In Underground Space – The 4th Dimension of Metropolises. Taylor & Francis, 2007. http://dx.doi.org/10.1201/noe0415408073.ch124.

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Date, K., N. Narita, Y. Yokota, et al. "Pre-grouting and chemical injection for preserving groundwater environment and safe tunnelling." In Underground. The Way to the Future. CRC Press, 2013. http://dx.doi.org/10.1201/b14769-220.

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"Effectiveness of zonal ground mass pre-stressing round an opening at grouting." In Underground Space - The 4th Dimension of Metropolises, Three Volume Set +CD-ROM. CRC Press, 2007. http://dx.doi.org/10.1201/noe0415408073-102.

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Matsumoto, Y., N. Kurose, T. Inoue, M. Kurazono, and K. Nodomi. "New pre-support method using pipe roof by semi-shield and chemical grouting for shirasu fill." In Modern Tunneling Science and Technology. CRC Press, 2020. http://dx.doi.org/10.1201/9781003077534-26.

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Conference papers on the topic "Pre-grouting"

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Grøv, Eivind, and Ola Woldmo. "Modern Pre-Grouting Technology in Norway." In Proceedings of the Fourth International Conference on Grouting and Deep Mixing. American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412350.0064.

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Myers, Timothy J., Holly J. Donoghue, Alex Naudts, and David Magill. "Pre-excavation Grouting Using Multiple Grouting Techniques for CSO Project in Dearborn, MI." In Proceedings of the Fourth International Conference on Grouting and Deep Mixing. American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412350.0119.

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Kizilbash, Masrour H., Peter A. Dickson, and Nasir A. Jaffery. "Neelum Jhelum Hydroelectric Project: Pre-Excavation Grouting in Twin Headrace Tunnels." In Grouting 2017. American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480786.024.

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Strømsvik, Helene, and Eivind Grøv. "Interpretation of Pressure and Flow during Pre-Grouting in Hard Rock Tunneling." In Grouting 2017. American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480786.028.

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Creütz, Mikael, Magnus Zetterlund, Magnus Eriksson, Thomas Janson, and Thomas Dalmalm. "Unified Design Approach for Rock Fissure Grouting—Best Design Practice for Pre-Grouting of Rock Tunnels in Sweden." In Grouting 2017. American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480793.019.

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Hognestad, H. O., and K. G. Holter. "Modern Pre-Excavation Grouting for Underground Structures in Rock." In Proceedings of the Fourth International Conference on Grouting and Deep Mixing. American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412350.0072.

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Cimiotti, Claudio, Roberto Bono, and Pietro Fioravanti. "Lake Mead—Intake Tunnel No. 3 Pre-Excavation Grouting Challenges Using a High Pressure Slurry TBM." In Grouting 2017. American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480786.032.

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Heikkinen, E., M. Lahti, E. Tammisto, H. Ahokas, and T. Ahokas. "Geophysics Applied in Tunnel Pilot Boreholes for Pre-Grouting Design Parameters." In Near Surface 2005 - 11th European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists & Engineers, 2005. http://dx.doi.org/10.3997/2214-4609-pdb.13.a045.

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Xu, Hua, Peng Zhang, Jiannan Chen, Runfang Sun, and Yiwei Liu. "Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels." In Eighth International Conference on Case Histories in Geotechnical Engineering. American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482117.001.

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Li, Quanxin, Zhijun Shi, and Jun Fang. "Drilling Technology of Pre-Grouting Reinforcement with Directional Borehole in Coal Floor." In International Conference on Pipelines and Trenchless Technology. American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413142.082.

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