Results 51 to 60 of about 549 (169)
International Journal of Ceramic Engineering &Science, Volume 7, Issue 1, January 2025.This study investigated the use of vanadium‐bearing slag as an alternative to calcium aluminate cement in high‐alumina refractory castables, with the aim to support decarbonization by reducing reliance on natural raw materials. Abstract Handling the massive quantities of by‐products from metallurgical processes has become a major concern in recent ...
Mathilda Derensy +4 more
wiley +1 more source
Durability of dry-mix shotcrete using supplementary cementitious materials
, 2018 International audienceDry-mix shotcrete has all the components of concrete but its particular placement technique makes it harder to study than ordinary concrete.
Armengaud, Julie +3 more
core +1 more source
KSCE Journal of Civil Engineering, 2018 In this study, implications of various mineral admixtures such as fly ash, silica fume, metakaolin, and Ground Granulated Blast Furnace Slag (GGBFS) for the rheological properties of fresh wet-mix shotcrete incorporating crushed aggregates are quantitatively assessed.
Kyong-Ku Yun +2 more
openaire +1 more source
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.Tunnel No. 2 of the mechanized Tabas coal mine and access entry to E5 panel serve as the primary routes for coal extraction from the longwall mining panel. The main objective of this research is to strengthen and select the optimal support system in the area after the intersection of main tunnel No.
Mahdis Shekarchizadeh +3 more
wiley +1 more source
Optimized layout and excavation sequence of deep chambers
工程科学学报The stability of deep chamber groups is crucial for safe mining operations and is closely related to the spatial layout and excavation sequence. Proper spatial arrangement and optimized construction sequencing not only help control the deformation and ...
Shenghua YIN +4 more
doaj +1 more source
Research on Rebound Performance of Shotcrete
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.The current rebound rate of shotcrete is high and does not meet the support requirements in the initial stages of construction. This study investigates the rebound performance of various cementing materials by incorporating silica fume, microspheres, and early‐strength shrinkage‐reducing agents.
Jinli Wang +5 more
wiley +1 more source
Testing the in situ properties of wet-mix shotcrete at early age
QC ...
Jameel, Fadi +2 more
openaire +2 more sources
Advances in Civil Engineering, Volume 2025, Issue 1, 2025.During the construction of tunnels, a large amount of dust particulate is generated, leading to severe environmental pollution and posing significant occupational health hazards, particularly in long tunnel projects. Currently, the main method for dust suppression in tunnels is ventilation, but it is not very effective because it is difficult to ...
Mengyuan Zhang +3 more
wiley +1 more source
Characterization of wet-mix shotcrete for small line pumping
, 2008 Le béton projeté est une technologie en pleine expansion de plus en plus sollicitée pour des réparations de structures en béton. Au cours de la dernière décennie, des efforts considérables furent déployés pour accroître le niveau des connaissances fondamentales sur les propriétés du béton projeté, particulièrement pour le procédé de projection du béton
openaire +2 more sources
, 2016 In the tunneling industry, shotcrete has been used for several decades. The use of shotcrete or wet-mix spray-on methods allows the application of this method in complex underground profiles and shapes.
Gamarra, Jean
core