Results 91 to 100 of about 16,972 (255)
Study on creep performance of shotcrete lining for tunnels
Journal of Materials Research and TechnologyCreep, as a long-term deformation characteristic of shotcrete, significantly influences the load-bearing performance and durability of tunnel support structures. This study conducted creep tests on shotcrete under varying stress levels.
Yali Jia +5 more
doaj +1 more source
The study of greening shotcrete considered the landscape [PDF]
, 2010 This study concerns the protection method and the natural maintenance of aging shotcrete. In Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads and most slope protection methods were to cover
Kinoshita Shunsuke +5 more
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How tunnel boundary irregularities can influence the stresses in a shotcrete lining [PDF]
, 2009 The shape of a tunnel boundary excavated by drill & blast in fractured rock masses is influenced by geological conditions and blasting operations. The overbreaks, apart from influencing the construction times and costs, also have an important influence ...
Borio, Luca, Peila, Daniele
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Optimization of shotcrete manipulator motion trajectory based on AIWCPSO algorithm
Gong-kuang zidonghuaTo address issues in traditional shotcrete manipulator trajectory planning algorithms, such as abrupt transitions between multiple path segments and low shotcrete efficiency and uniformity caused by frequent starts and stops, an optimized motion ...
SHI Can +6 more
doaj +1 more source
Damage of shotcrete under freeze-thaw loading
Journal of Civil Engineering and Management, 2017 The freeze-thaw durability of shotcrete can be improved by adding an air-entraining agent in cold areas. The main focus of this paper is to investigate the changes in the internal pore structure of C25 ordinary shotcrete and shotcrete mixed with a RM-YQ
Jianxun Chen +4 more
doaj +1 more source
Robotic Machine for High-Quality Shotcreting Process [PDF]
, 2010 This paper summarizes the development of the technologies used to produce high quality sprayed concrete layers by robotizing a commercial shotcreting machine and automating the process used in the tunnelling construction industry.
Nabulsi, S. +2 more
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Robotic Machine for High-Quality Shotcrete Process [PDF]
, 2010 This paper summarizes the development of the technologies used to produce high quality sprayed concrete layers by robotizing a commercial shotcreting machine and automating the process used in the tunnelling construction industry.
Nabulsi, Samir +2 more
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Flexural Behaviour of Reinforced Shotcrete beams Comprehending Waste Plastic Fiber
Wasit Journal of Engineering SciencesWet-mix shotcrete is often used as a placement method in tunnelling and ground support. However, to date, only a limited number of studies have been identified the roles of waste plastic fiber (WPF) on wet-mix shotcrete mixtures.
Yousif A. Mansoor +2 more
doaj +1 more source
Roughness evaluation in shotcrete-lined water tunnels with invert concrete based on cases from Nepal
Journal of Rock Mechanics and Geotechnical Engineering, 2018 Most of the existing roughness estimation methods for water tunnels are related to either unlined or concrete/steel-lined tunnels. With the improvement in shotcrete technology, advancement in tunneling equipment and cost and time effectiveness, future ...
Chhatra Bahadur Basnet +1 more
doaj +1 more source
On a Paradox of Elasto-Plastic Tunnel Analysis [PDF]
, 2018 Elasto-plastic tunnel analysis may produce a paradox in the calculation of ground pressure whereby ground pressures appear to increase in relation to higher ground quality. More specifically, for an overstressed ground in combination with a stiff support,
Anagnostou, G., Cantieni, L.
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