Results 11 to 20 of about 1,131 (181)
Study on the effect of new type liquid accelerator on the performance of shotcrete [PDF]
Fracture and Structural Integrity, 2017 Shotcrete is an essential preliminary support means in New Austrian Tunneling Method (NATM) construction and plays a very important role in controlling the stability of surrounding rock.
Luchen Zhang +3 more
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Influence of liquid accelerators on shotcrete in karst area tunnels
Case Studies in Construction Materials, 2022 Tunnel constructions built in karst areas are liable to calcium leaching, which can lead to CaCO3 deposits in tunnel drainage pipes and water gutters, resulting in the blockage of tunnel drainage systems.
Ziwei Zhang +3 more
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Load Capacity of steel arches with shotcrete coating [PDF]
E3S Web of Conferences, 2019 The shotcrete technology (application of a concrete layer) is widely used in coal mines. The applied layer of shotcrete to the underground workings support, changes the load capacity of the entire supporting system (and its elements).
Ficek Paweł +3 more
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Filler Effect in Shotcrete [PDF]
Materials, 2019 The effects of fine limestone powder on the early hydration of cementitious systems accelerated by means of alkali-free aluminum sulfate based products, commonly used for shotcrete applications, were investigated in the course of laboratory and real scale tests.
Isabel Galan +6 more
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LABORATORY TESTS ON THE STRENGTHENING OF WET-MIX SHOTCRETE LINING WITH THE USE OF NANOMATERIALS
Rudarsko-geološko-naftni Zbornik, 2021 Adding nanomaterials to concrete extends the size range of constituent particles well into nano-scale dimensions, which could help the compacting of particles in cement-based materials.
Hamid Kalhori +4 more
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Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
Applied Sciences, 2021 To study the influence of different mix proportions on the fresh properties of wet shotcrete, the rheological properties and air content of wet shotcrete with different admixtures before pumping were measured.
Jun Xie +3 more
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Недвижимость: экономика, управление, 2023 The article deals with the problem of reducing rebound and dust formation, as well as increasing the strength of shotcrete. It is known that with “dry” shotcrete, the rebound is especially significant, since the mixture does not have time to acquire ...
Valery Yakovlevich Mishchenko +3 more
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Shock and Vibration, 2019 The drill and blast method is widely used in constructing tunnels in rock. Unfortunately, blasting vibration can damage newly performed shotcrete layers which are major support structures to stabilize surrounding structures.
Ao Li +5 more
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Sustainable shotcrete production with waste glass aggregates
SN Applied Sciences, 2022 Article highlights This study investigates sand replacement with glass aggregates in shotcrete production for use in excavation industry. Tested shotcrete mixes containing glass aggregates exhibited a similar or higher strength properties at both early ...
Mehdi Serati +4 more
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Evaluation of shear behaviour of masonry walls strengthened by FRP laminates and shotcrete [PDF]
Journal of Structural and Construction Engineering, 2019 Extensive damages in a large number of existing buildings under in-plane shear has shown the need of structural strengthening techniques for masonry structures.
mohsen izadinia, rahmatollah pourjaafary
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