Results 41 to 50 of about 16,972 (255)

Bending Properties of Short-Cut Basalt Fiber Shotcrete in Deep Soft Rock Roadway

open access: yesAdvances in Civil Engineering, 2020
To study the effect of short-cut basalt fiber (BF) on the bending and toughening properties of shotcrete, bending toughness tests of short-cut BF shotcrete slabs with different volume fractions were carried out.
Shaoyang Yan   +4 more
doaj   +1 more source

Environmentally friendly utilization of coal gangue as aggregates for shotcrete used in the construction of coal mine tunnel

open access: yesCase Studies in Construction Materials, 2021
Coal gangue is one of the largest discharged industrial solid wastes, which is generated in the processes of coal mining and washing. To accelerate the in-situ utilization of coal gangue, this paper explored coal gangue aggregates (CGA) as the single ...
Peiyuan Chen   +5 more
doaj   +1 more source

Experimental assessment and retrofit of full-scale models of existing RC frames [PDF]

open access: yes, 2002
PSD tests on two full-scale models of existing non-seismic resisting RC frame structures are described. The testing program covered several aspects, namely assessment of seismic performance of existing frames without and with infill panels ...
Molina, J., Pinto, A. V., Varum, H.
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

An overview of the research trends on fiber-reinforced shotcrete for construction applications

open access: yesReviews on Advanced Materials Science, 2023
In this study, data mining, followed by the scientometric analysis of fiber-reinforced shotcrete (FRS), was carried out for knowledge mapping, co-citations, and co-occurrence.
Waqas Ahmad   +2 more
semanticscholar   +1 more source

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

open access: yesDeep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen   +6 more
wiley   +1 more source

Fracture mechanism and ductility performances of fiber reinforced shotcrete under flexural loading insights from digital image correlation (DIC)

open access: yesInsight - Civil Engineering
This paper investigates the fracture mechanism and ductility performance of fiber-reinforced shotcrete (FRS) under flexural loading through digital image correlation (DIC) analysis.
Tohid Asheghi Mehmandari   +3 more
semanticscholar   +1 more source

In-Process Integration of Reinforcement for Construction Elements During Shotcrete 3D Printing

open access: yesOpen Conference Proceedings, 2023
The current state of the art for additive manufacturing often utilises horizontal layer printing approaches for a variety of materials and applications.
Robin Dörrie   +5 more
semanticscholar   +1 more source

Research on the Evolution Law of the Plastic Zone and Control Technologies for Surrounding Rock in Floor Roadway Influenced by Mining Activities

open access: yesEnergy Science &Engineering, Volume 14, Issue 1, Page 444-459, January 2026.
ABSTRACT This study addresses the challenges of deformation failure and the difficulty in controlling the surrounding rock in the 2453 floor roadway of a coal mine in Hunan Province, influenced by mining activities. Conducting an in‐depth investigation into the evolution law of the principal stress and stability control technologies for the surrounding
Shihai Shu   +6 more
wiley   +1 more source

Exploring Dynamic Spalling Behavior in Rock–Shotcrete Combinations: A Theoretical and Numerical Investigation

open access: yesMathematics
Spalling is a widespread dynamic disaster during blasting excavation in underground engineering. To clarify the coupled dynamic response and spalling behavior of an underground tunnel with a spray anchor, an investigation based on the rock–shotcrete ...
Lin Luo   +5 more
doaj   +1 more source

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