Results 91 to 100 of about 19,720 (209)

Three‐dimensional reconstruction of loose defects in semi‐rigid base layers using enhanced deep learning and point cloud from GPR images

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 31, Page 6475-6492, 29 December 2025.
Abstract Loose defects in semi‐rigid base layers can critically compromise the structural performance and long‐term serviceability of asphalt pavements. However, accurate identification and quantitative assessment of such defects remain challenging due to the lack of reliable ground‐penetrating radar (GPR) data sets and the limitations of existing ...
Bei Zhang, Shuo Xu, Yanhui Zhong, Hongjian Cai, Quansheng Zang, Xiaolong Li, Hao Hong   +6 more
wiley   +1 more source

Comprehensive Subgrade Deflection Acceptance Criteria - Pilot Implementation Report [PDF]

, 2002
This report has presents the findings of implementations of pilot specifications for subgrade acceptance based on measured deflections. The reconfigured rolling wheel deflectomter (RWD), portable truck-mounted deflection measurement systems, and dynamic ...
Crovetti, James, Schabelski, Jay
core   +1 more source

A hierarchical framework for three‐dimensional pavement crack detection on point clouds with multi‐scale abnormal region filtering and multimodal interaction fusion

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 31, Page 6577-6596, 29 December 2025.
Abstract Early crack detection enables timely maintenance actions, which in turn help extend pavement life and reduce maintenance costs. Traditional 2D detection lacks detail, while 3D detection faces accuracy and efficiency challenges. This paper proposes a hierarchical crack detection framework—F2CrackDet‐PCD (crack detection based on point cloud ...
Jiayv Jing, Ling Ding, Xu Yang, Hang Cheng, Yazhen Qiu, Hainian Wang, Rauno Heikkilä   +6 more
wiley   +1 more source

An Integrated Multisource and Multiscale Monitoring Technique for Assessing the Health Status of High-Speed Railway Subgrade

Remote Sensing
The precise identification of railway subgrade defects remains a significant challenge for the railway industry globally. Due to the limitations of individual monitoring techniques, comprehensive information on subgrade defects cannot be obtained.
Yuanxingzi He, Yongwei Li, Linrong Xu
doaj   +1 more source

Strengthening Dispersive Soils Using Waste Calcium‐Based Composite for Erosion Reduction and Enhanced Lifecycle Performance for Green Subgrade

Engineering Reports, Volume 7, Issue 11, November 2025.
A sustainable stabilization approach using 2% Calcium Lignosulphonate (CLS) and 3% Calcium Sulphate (CS) remarkably improves dispersive soil strength, erosion resistance, and durability. UCS increased from 86 to 198 kPa, CBR from 2.3% to 8.4%, with 61%–67% soil loss reduction.
Farhan Ali, Hassan Mujtaba Shahzad, Khalid Farooq, Zubair Masoud   +3 more
wiley   +1 more source

Dynamic Compaction of High Groundwater Level Subgrade of Buildings: A Model Test-Based Analysis of Stress Distribution and Reinforcement Mechanisms

Buildings
Dynamic compaction (DC) represents a cost-effective method for reinforcing subgrade and is particularly suited to treating large-scale building subgrade.
Jingyuan Sun, Peixuan Li, Xinsheng Ge, Jingyue Wang, Yasheng Liu, Shiyu Tian   +5 more
doaj   +1 more source

Contributions to predicting contaminant leaching from secondary materials used in roads [PDF]

, 2004
Slags, coal ashes, and other secondary materials can be used in road construction. Both traditional and secondary materials used in roads may contain contaminants that may leach and pollute the groundwater.
Apul, Defne S
core   +2 more sources

An interval prediction system for track irregularity after tamping based on multi‐module machine learning and pointwise scaling approach

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 27, Page 4797-4823, 14 November 2025.
Abstract Predicting changes in track irregularity after tamping is important for assisting maintenance decisions and improving construction efficiency. To date, most prediction methods lack consideration for the uncertainties related to tamping effects.
Yuxiao Zhang, Jin Shi, José Nuno Varandas, Youkang Ding   +3 more
wiley   +1 more source

Dynamic Response of Railway Subgrade Under Train Load and Freeze–Thaw Action

Applied Sciences
In railway engineering research, there is a notable gap as existing studies often focus separately on train-induced vibrations or freeze–thaw cycle impacts on subgrades, lacking a comprehensive analysis of their combined effects on subgrade dynamic ...
Lei Gao, Linzeng Luo, Ding Lu, Bingbing Wei, Lau Wa Hawng Nan   +4 more
doaj   +1 more source

Research News, November 2010 [PDF]

, 2010
Newsletter of the Iowa Department of Transportation's Research and Technology ...

core