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The Impact of Coarse Aggregate Parent Rock Types on the Freeze–Thaw Performance of Concrete: A Comparative Study

Buildings
Hydraulic engineering projects in high-altitude environments are subject to significant diurnal temperature variations, necessitating concrete with high freeze–thaw resistance.
Shihua Zhou, Cai Wu, Jiazheng Li, Yan Shi, Yuanyi Wang, Mingxing Luo   +5 more
doaj   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Chloride transport and pore-structure deterioration of OPC and magnesium phosphate cement concrete under sustained water pressure

Frontiers in Materials
Estuary ship-lock concrete is exposed to chloride-bearing water and sustained hydraulic pressure, which may accelerate chloride ingress and induce pore-structure deterioration.
Zhen Hu, Bo Hong, Sirui Wang
doaj   +1 more source

The Counterbalance of the Adverse Effect of Abrasion on the Properties of Concrete Incorporating Nano-SiO₂ and Polypropylene Fiber Based on Pore Structure Fractal Characteristics

Fractal and Fractional, 2022
Abrasion damage is a typical hydraulic structure failure and considerably impacts the durability of buildings. In severe circumstances, it can even prevent hydraulic structures from being used and operated normally.
Kun Wang, Jinjun Guo, Peng Zhang, Qingxin Meng   +3 more
doaj   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Study on crack propagation and parameter effects of concrete under hydraulic fracturing [PDF]

AIP Advances
This paper uses acoustic emission and scanning electron microscopy to conduct hydraulic fracturing experiments on concrete, revealing its macroscopic and microscopic fracture characteristics.
Tao Chen, Yonghao Liu, Yiyang Zhou, Fulin Wang, Chao Su, Qingfa Wu, Yong Huang, Tingqiu Jiang   +7 more
doaj   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Predictive modeling of abrasion resistance of hydraulic concrete using supplementary cementitious materials

Case Studies in Construction Materials
Many hydraulic concrete structures are subjected to severe abrasion from sediment-laden flows, necessitating durable and sustainable material solutions. Conventional concrete, with its high cement content, contributes significantly to CO₂ emissions; thus,
Afaq Ahmed, Matjaž Mikoš
doaj   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source