Results 71 to 80 of about 18,753 (176)

Toward Zero Waste Mining: Circular Economy of Copper Slags

Global Challenges, Volume 9, Issue 12, December 2025.
Mining and metal extraction processes generate over 90% of global waste. With the rapid increase in population and urbanization, the demand for geotechnical applications and construction materials constantly increases and can absorb the entire quantity of slags generated.
Aleksandar Mitrašinović, Željko Kamberović, Dawei Yu   +2 more
wiley   +1 more source

Statistical analysis of cone penetration resistance of railway ballast

EPJ Web of Conferences, 2017
Dynamic penetrometer tests are widely used in geotechnical studies for soils characterization but their implementation tends to be difficult. The light penetrometer test is able to give information about a cone resistance useful in the field of ...
Saussine Gilles, Dhemaied Amine, Delforge Quentin, Benfeddoul Selim   +3 more
doaj   +1 more source

An investigation on the stiffness of timber sleepers for the design of fibre composite sleepers [PDF]

, 2008
This paper presents an experimental investigation on timber railway sleepers with a view to select a suitable stiffness and a modulus of elasticity for the design of a fibre composite railway sleeper.
Aravinthan, T., Karunasena, W., Ticoalu, A.   +2 more
core  

Stress–dilatancy relationship for railway ballast [PDF]

Studia Geotechnica et Mechanica, 2018
Abstract Knowledge of the mechanical behaviour of ballast is very important for designing a railway track, especially for high-speed lines. The monotonic drained triaxial tests of scaled and fouled ballast presented in literature were analysed using the Frictional State Theory.
openaire   +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

Identification of dynamic properties of a flooded ballast layer using impact excitation technique and minimization algorithm

Journal of Infrastructure Preservation and Resilience
In recent times, the railway sector has faced a pressing need to expand its railway network, resulting in the widespread adoption of ballasted tracks. These tracks are favored for their ease of construction, making them a cost-effective solution for the ...
Ratabhat Wangtawesap, Chatpan Chintanapakdee, Chayut Ngamkhanong   +2 more
doaj   +1 more source

Differential settlements monitoring in railway transition zones using satellite‐based remote sensing techniques

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 27, Page 4824-4844, 14 November 2025.
Abstract Railway track transitions are prone to uneven settlements and track geometry degradation. Traditional monitoring methods are limited in coverage, which highlights the need for novel solutions. This study proposes a method that systematically integrates the high spatial resolution of Persistent Scatterer Interferometric Synthetic Aperture Radar
J. N. Varandas, Y. Zhang, J. Shi, S. Davies, A. Ferreira   +4 more
wiley   +1 more source

Influence of Ballast and Sub-Ballast Thickness on Structural Behavior of Heavy-Haul Railway Platform Determined by Using Finite Element Modeling

Construction Materials
This study investigates the influence of ballast and sub-ballast thicknesses on the structural behavior of a heavy-haul railway platform by using finite element modeling with SysTrain software (v.
Magdiel Acaz de Oliveira Teixeira, William Wilson dos Santos, Lisley Madeira Coelho, Lidiane Hellen dos Santos Santana, Fábio Grisolia de Ávila, Sergio Neves Monteiro, Antônio Carlos Rodrigues Guimarães   +6 more
doaj   +1 more source

A Global Account of Established Non‐Native Fish Species

Global Change Biology, Volume 31, Issue 8, August 2025.
This study compiles the most complete global database of non‐native fish species that have successfully established themselves in new freshwater and marine environments. It documents 1535 species across 193 countries, identifies their main introduction routes—such as aquarium trade, aquaculture, and artificial waterways—and highlights that many ...
Phillip J. Haubrock, Mariana Novello, Neil Angelo Abreo, Dagmara Błońska, Ana Clara Sampaio Franco, Ismael Soto, Giuseppe Castaldelli, Stelios Katsanevakis, Antonín Kouba, Paride Balzani, Irmak Kurtul, Ali Serhan Tarkan, Elizabeta Briski, Robert Britton   +13 more
wiley   +1 more source

Experimental study and numerical simulation of the impact of under-sleeper pads on the dynamic and static mechanical behavior of heavy-haul railway ballast track

Railway Engineering Science
Laying the under-sleeper pad (USP) is one of the effective measures commonly used to delay ballast degradation and reduce maintenance workload. To explore the impact of application of the USP on the dynamic and static mechanical behavior of the ballast ...
Yihao Chi, Hong Xiao, Yang Wang, Zhihai Zhang, Mahantesh M. Nadakatti   +4 more
doaj   +1 more source