Results 61 to 70 of about 1,131 (181)

Optimization of shotcrete manipulator motion trajectory based on AIWCPSO algorithm

Gong-kuang zidonghua
To address issues in traditional shotcrete manipulator trajectory planning algorithms, such as abrupt transitions between multiple path segments and low shotcrete efficiency and uniformity caused by frequent starts and stops, an optimized motion ...
SHI Can, TAN Ziliang, LEI Chao, LI Yunwang, XU Hanfei, HU Qiaowei, JI Zhendong   +6 more
doaj   +1 more source

Flexural Behaviour of Reinforced Shotcrete beams Comprehending Waste Plastic Fiber

Wasit Journal of Engineering Sciences
Wet-mix shotcrete is often used as a placement method in tunnelling and ground support. However, to date, only a limited number of studies have been identified the roles of waste plastic fiber (WPF) on wet-mix shotcrete mixtures.
Yousif A. Mansoor, Amer M. Enad, Abdulkader I. Al-HAdithi   +2 more
doaj   +1 more source

Effect of expansive agent and internal curing agent on crack resistance of C50 silica fume wet-mix shotcrete

Advances in Mechanical Engineering, 2019
High-strength shotcrete is always needed to strengthen rock support. However, it will reversely increase the crack risk. Crack normally goes against the durability and shortens the service life of shotcrete.
Feng Wei Ning, Yue Bo Cai, Yin Bai, Bo Chen, Feng Zhang   +4 more
doaj   +1 more source

Dust generation characteristics during the wet-mix shotcrete process in mines and the preparation of a composite dust-reducing additive

Meitan xuebao
The dust pollution during the wet-mix shotcrete process in mines constitutes a crucial factor limiting the efficiency, cleanliness, and safety of wet-mix shotcrete support projects.
Zhongan JIANG, Mingli SI, Guoliang ZHANG, Fabin ZENG, Cong LI   +4 more
doaj   +1 more source

Experimental study on the pullout behavior of steel rebars in masonry shotcreted layer

Results in Engineering
Unreinforced masonry (URM) buildings are quite popular worldwide due to their low construction costs, despite being susceptible to significant damage even from moderate earthquakes.
Hadi Sabouri, Mohammad Yekrangnia
doaj   +1 more source

Influence of shotcrete carbonation resistance under bending stress

工程科学与技术, 2015
:The durability experiments of shotcrete with and without steel fiber under bending stress in accelerated carbonation corrosive environments were carried out to investigate the carbonation regularity of tunnel lining.
Wang Jiabin
doaj  

Optimizing Recycled Tunnel Boring Machine (TBM)-Excavated Materials as Aggregates in Shotcrete Mix Design

Buildings
Tunnel Boring Machine (TBM) excavation materials were recycled by sieving and separating particles into sizes 5–10 mm (coarse aggregates) and below 5 mm (manufactured sand) to explore their potential as aggregates in shotcrete production, with the aim of
Wei Zhang, Rusheng Hao, Zhijun Men, Jingjing He, Yong Zhang, Wei Hu   +5 more
doaj   +1 more source

Experimental study on mix proportion optimization of anti-calcium dissolution shotcrete for tunnels based on response surface methodology

Underground Space
Aiming at the issue of crystallization and blockage of drainage system due to the massive calcium loss from the tunnel shotcrete, a self-designed tunnel seepage crystallization modelling system was developed.
Chongming Tian, Yueping Tong, Junyuan Zhang, Fei Ye, Guifeng Song, Yin Jiang, Meng Zhao   +6 more
doaj   +1 more source

Experimental study on the utilization of Fly ash solid waste in tunnel shotcrete materials

Energy Science & Engineering
Fly ash has emerged as a prominent solid waste in China, leading to various environmental concerns and posing a threat to the health of living organisms, including humans.
Zan Juncai, Ren Wanxing, Guo Qing
doaj   +1 more source

Effect of Mineral Admixtures on Properties of Shotcrete

Zhongwai Gonglu
To study the influence of different mineral admixtures on the properties of shotcrete, the effects of four kinds of mineral admixtures including fly ash, silica fume, metakaolin, and carbon black on the rebound rate, one-shot thickness, and compressive ...
MA Kaikai, ZHAO Feng, SUN Rongxiao, HAN Song, HU Peng, WANG Kun   +5 more
doaj   +1 more source