Results 1 to 10 of about 195 (142)
Influence of materials and nozzle geometry on spray and placement behavior of wet-mix shotcrete
Case Studies in Construction Materials, 2023 Shotcrete finds extensive applications in civil engineering, from repair and rehabilitation to new constructions. Nevertheless, shotcrete construction frequently suffers from placement issues, such as rebound and overshooting. These challenges can result
Xiongxin Wang +2 more
exaly +4 more sources
Pet Fiber Reinforced Wet-Mix Shotcrete with Walnut Shell as Replaced Aggregate [PDF]
Applied Sciences (Switzerland), 2017 In the rapidly developing modern society, many raw materials, such as crushed limestone and river sand, which are limited, are consumed by the concrete industry. Naturally, the usage of waste materials in concrete have become an interesting research area
Guoming Liu +2 more
exaly +4 more sources
Microscopic investigations on the air-void characteristics of wet-mix shotcrete
Journal of Materials Research and Technology, 2019 This paper aims to perform microscopic investigations on the air-void characteristics of wet-mix shotcrete before and after the spraying process. Both air-void analysis (AVA) and image analysis (IA) were used to monitor the air-void characteristics of ...
Pangil Choi +2 more
exaly +4 more sources
Influence of Mix Proportions on Rheological Properties, Air Content of Wet Shotcrete—A Case Study
Applied Sciences (Switzerland), 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.
Guoming Liu, Nan Guo, Liu Guoming
exaly +3 more sources
Applied Sciences (Switzerland), 2022 Wet-mix shotcrete has been widely used to support roadways during the excavation of underground mining. In practice, the mix proportion of wet-mix shotcrete plays a key role in later successful application.
Bin Han, Kun Ji
exaly +3 more sources
Effects of PET Fibers on Pumpability, Shootability, and Mechanical Properties of Wet-Mix Shotcrete [PDF]
Advances in Civil Engineering, 2019 Polyethylene terephthalate (PET) fiber from waste plastic bottles is an environmentally friendly fiber that can improve the mechanical properties of wet-mix shotcrete. The main objective of this paper is to investigate the effects of PET fiber parameters
Xiangfei Cui +3 more
doaj +2 more sources
Sulfate durability and leaching behaviour of dry- and wet-mix shotcrete mixes
Cement and Concrete Research, 2020 Shotcrete is a material frequently used in underground constructions such as tunnels, where Ca leaching and sulfate attack are important durability issues. In this study, two test methods were employed to investigate the sulfate resistance and leaching behaviour of dry- and wet-mix shotcretes in sulfate solutions on a time-resolved basis.
Isabel Galän +2 more
exaly +2 more sources
Engineering Fracture Mechanics, 2022 Part II of the study of a wet mix shotcrete focuses on creep and shrinkage as well as on the thermal and hygral behavior. It deals with the time-dependent mechanical behavior due autogenous shrinkage, combined autogenous and drying shrinkage, and basic creep and combined basic and drying creep for moderate and high levels of sustained compressive ...
Cordes Tobias +2 more
exaly +3 more sources
On the significance of accelerator enriched layers in wet-mix shotcrete
Tunnelling and Underground Space Technology, 2023 Wolfgang Kusterle
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External Annular Air Curtain to Mitigate Aerosol Pollutants in Wet-Mix Shotcrete Processes
BuildingsDust generation from wet-mix shotcrete (WMS) is a major source of aerosol pollutants in underground construction. However, research on aerosol pollutant control equipment during the WMS process is still scarce.
Kunhua Liu +4 more
doaj +2 more sources