Results 41 to 50 of about 549 (169)

Effect of fly ash content on the leaching resistance of shotcrete

Frontiers in Materials
IntroductionTo investigate the influence of fly ash (FA) content on the leaching resistance of shotcrete, this study adopted FA replacement ratios as the main variables (0%, 15%, 20%, 25%).MethodsShotcrete specimens were prepared using the wet-mix ...
Xiangze Zeng, Qingyu Wu, Xiaolin Liang, Liuyuan Lan, Junling Liang, Jicheng Wu   +5 more
doaj   +1 more source

Analysis of Temperature and Displacement Fields in the Freeze Construction of Overlapping Cross‐Passages Within Water‐Rich Sand Layers

Geofluids, Volume 2026, Issue 1, 2026.
In the construction of an F‐type cross‐passage in an overlapping‐type shield tunnel using the artificial ground freezing method, the development of the distal frozen wall is difficult to control, and ground deformation is influenced by the superimposed disturbance of successive construction steps. Existing studies are insufficient to fully characterize
Jinlei Li, Zixuan Zhang, Xueqing Xu, Gan Cheng, He Yongliang   +4 more
wiley   +1 more source

High dosages of set accelerator in fibre reinforced shotcrete

, 2006
Aluminium sulphate-based shotcrete set accelerators (also called activators) are known to influence the rate of early-age hydration in shotcrete. This is the primary motivation for their widespread use throughout the mining and tunnelling industries ...
Jerlin, Oscar,, Lönnesjö, Kristian,, Bernard, E. S.   +2 more
core   +1 more source

Workability, Strength, and Durability of Wet-Mix Shotcrete Incorporating a Viscosity-Enhancing and Early-Strength Agent

Buildings
This study investigates viscosity-enhancing and early-strength wet-mix shotcrete (VE-ESWS) incorporating a self-developed viscosity-enhancing and early-strength agent (VE-ES).
Jitao Dai, Yuting Xiang, Shengnian Wang, Leilei Gu, Yanzhao Sun, Mingwei Li, Kefei Fan   +6 more
doaj   +1 more source

Deformation and Fracture Behavior of Argillaceous Weakly Cemented Rock Under Hydromechanical Interaction: Experimental Study and UDEC‐Trigon Simulation

Geofluids, Volume 2026, Issue 1, 2026.
This study investigates innovative methods to address the stability issues of roadways with argillaceous weakly cemented surrounding rock (AWCR) in western China′s coal mining regions. The research focuses on the hydromechanical properties of AWCR, analyzing its mineral composition, pore structure, and microstructure, which reveal high porosity and ...
Zhijiang Lun, Zizheng Zhang, Weiguang Zhang, Honglei Wei, Shuaigang Liu, Tianshou Ma   +5 more
wiley   +1 more source

Effect of Curing Temperature on Microstructure and Durability of Concrete: A Review

Journal of Engineering, Volume 2026, Issue 1, 2026.
The microstructure and durability of concrete are greatly influenced by the curing temperature. High‐temperature curing accelerates cement hydration; however, it may lead to uneven distribution of hydration products and increased porosity. In contrast, low‐temperature curing retards hydration, resulting in an insufficient hydration formation products ...
Daguan Huang, Yingwei Wang, Qian Xia, Jianbo Tian, Yang Li, Gang Peng, Sameer Gajghate   +6 more
wiley   +1 more source

From Strain to Displacement: A Hybrid Framework for Full‐Line Identification and Stage‐Based Prediction of Metro Deformation During Undercrossing Tunneling

Structural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
The construction of new tunnels underneath existing metro lines imposes critical challenges in accurately measuring and forecasting differential settlements, particularly in complex geological and structural settings. This study presents a hybrid measurement and forecasting framework that synergizes sparse strain monitoring with intelligent algorithms ...
Qingqing Zhang, Ruixiao Li, Tianjing Guo, Jianfeng Gu, Lin Chen   +4 more
wiley   +1 more source

Compressive Test Characteristics and Constitutive Relationship of Wet Polypropylene Macrofiber-Reinforced Shotcrete

, 2021
Shotcrete is often subject to poor ductility and cracking problems, particularly under high stresses. In order to deal with these issues, the feasibility of adding polypropylene macrofibers to shotcrete was verified.
Fei Wu, Yunhai Cheng, Chang Su, Fenghui Li, Gangwei Li   +4 more
core   +1 more source

Optimizing the construction process: State‐of‐art, innovations, and potential benefits of temperature match curing

Structural Concrete, Volume 26, Issue 6, Page 7312-7325, December 2025.
Abstract The temperature match curing (TMC) method significantly enhances the accuracy of concrete property assessments by replicating in situ curing conditions in test specimens. While this method has remained underutilized and relatively unknown in the industry due to its complexity, the advent of Internet of Things and wireless sensor technologies ...
David Boix‐Cots, Tai Ikumi, Fidel Lozano‐Galant, Albert de la Fuente   +3 more
wiley   +1 more source

From pixels to rating—A semiautomated system linking multi‐damage segmentation and condition rating in concrete bridge inspections

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 30, Page 5842-5866, 19 December 2025.
Abstract While machine learning (ML) has advanced image‐based damage detection, a critical gap remains: the automated translation of detected damage into standardized condition ratings used in structural assessments. Most existing approaches stop at semantic segmentation, overlooking the damage rating step essential for practical inspections.
Rona Firdes Çelik, Vedhus Hoskere, Sylvia Kessler   +2 more
wiley   +1 more source