Results 1 to 10 of about 17,530 (271)

Influence and Mechanism of Coal Gangue Sand on the Properties and Microstructure of Shotcrete Mortar. [PDF]

Materials (Basel)
Coal gangue, a fine aggregate for the preparation of shotcrete mortar, is a cost-effective approach for the resource utilization of coal gangue. This study employed a mortar setting time tester, electronic universal testing machine, water absorption ...
Cui Y.
europepmc   +2 more sources

Study on the degradation mechanism and performance improvement of coal gangue-based shotcrete under high-salt dry-wet cycling conditions in underground mining environments [PDF]

Science Progress
The shotcrete lining in the underground water sumps of the Shen Dong coal mine in western China has been subjected to long-term exposure to harsh environmental conditions, including repeated dry-wet cycles and high salinity.
Hailei Wu, Mingtao Gao, Sushe Chen, Hongyun Ren, Zhenhua Hu, Minhui Li, Chengyang Guo, Zihao Guo   +7 more
doaj   +2 more sources

Numerical investigation on the tensile fracturing behavior of rock-shotcrete interface based on discrete element method

International Journal of Mining Science and Technology, 2020
Four groups of numerical models of Brazilian tests on rock-shotcrete interfaces were successfully conducted by PFC2D. The tensile strength and Young’s modulus of shotcrete were considered. Six different undulations of rock-shotcrete interface were set up.
Jiadong Qiu, Lin Luo, Xi-bing Li
exaly   +3 more sources

Experimental study and numerical simulation of the effect of different fiber types on the basic mechanical properties of shotcrete. [PDF]

Sci Rep
This study analyzed the enhancement effects and mechanisms of steel, glass, and polypropylene fibers on the mechanical properties of concrete, aiming to guide the selection of suitable fiber types and dosages for shotcrete projects.
Liu CY, Wang HQ, Liu XF, Niu MX, Wu JF.
europepmc   +2 more sources

Influence of materials and nozzle geometry on spray and placement behavior of wet-mix shotcrete

Case Studies in Construction Materials
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, Md. Mashfiqul Islam, Qian Zhang   +2 more
doaj   +2 more sources

RoBétArmé Project: Human-robot collaborative construction system for shotcrete digitization and automation through advanced perception, cognition, mobility and additive manufacturing skills. [PDF]

Open Res Eur
The importance of construction automation has grown worldwide, aiming to deliver new machineries for the automation of roads, tunnels, bridges, buildings and earth-work construction.
Kostavelis I, Nalpantidis L, Detry R, Bruyninckx H, Billard A, Christian S, Bosch M, Andronikidis K, Lund-Nielsen H, Yosefipor P, Wajid U, Tomar R, Martínez FL, Fugaroli F, Papargyriou D, Mehandjiev N, Bhullar G, Gonçalves E, Bentzen J, Essenbæk M, Cremona C, Wong M, Sanchez M, Giakoumis D, Tzovaras D.   +24 more
europepmc   +2 more sources

Utilizing Crushed Limestone as a Sustainable Alternative in Shotcrete Applications. [PDF]

Materials (Basel)
Solving the challenges facing the mining industry is crucial for shaping the global attitude towards clean energy technologies associated with critical minerals extracted from depth.
Mutaz E, Dafalla M, Al-Mahbashi AM, Serati M.   +3 more
europepmc   +2 more sources

Assessment of mechanical behavior of sprayed concrete reinforced with waste tire textile fibers [PDF]

Scientific Reports
The primary objective of this research is to assess the mechanical properties of shotcrete or sprayed concrete reinforced with waste tire textile fibers (WTTFs).
Behzad Khosh, Hadi Atapour
doaj   +2 more sources

An Extended Damage Plasticity Model for Shotcrete: Formulation and Comparison with Other Shotcrete Models [PDF]

Materials, 2017
The aims of the present paper are (i) to briefly review single-field and multi-field shotcrete models proposed in the literature; (ii) to propose the extension of a damage-plasticity model for concrete to shotcrete; and (iii) to evaluate the capabilities of the proposed extended damage-plasticity model for shotcrete by comparing the predicted response ...
Matthias Neuner, Peter Gamnitzer, Guenter Hofstetter   +2 more
exaly   +4 more sources

The effect of basalt fiber addition on cement concrete: A review focused on basalt fiber shotcrete

Frontiers in Materials, 2022
Basalt fiber, as a natural silicate fiber, has excellent engineering performance in high and low temperature resistance, high fracture strength, toughness, shear and elastic modulus in nature.
Qianqian Liu, Pengfei Song, Lianwei Li, Yuzhong Wang, Xuhao Wang, Jian Fang   +5 more
doaj   +1 more source