A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel Slag Sub-Ballast for Sustainable Railway Track Infrastructure
[Abstract:] Railway lines require a significant amount of natural raw materials. Industrial by-products can be used instead, reducing the costs of natural aggregate exploration. This work analyzes a ballasted track’s short- and long-term performances when replacing conventional sub-ballast aggregate with steel slag. After an extensive laboratory characterization of the steel slag, the material performance was analyzed in a 3D numerical model of a ballasted track when included in a railway track. An empirical model was implemented and calibrated to predict the long-term permanent deformation induced in the track after many train passages. The results are compared with the allowable deformation limits required for conventional high-speed ballasted track railway lines. An additional analysis was conducted to assess the influence of steel slags on the critical speed of conventional railway tracks when used. The results show a residual impact on the critical speed value compared to the conventional sub-ballast made with natural aggregates. ; This work received funding by the Portuguese Science and Technology Foundation through the scholarships with reference [SFRH/BD/07370/2021] “https://doi.org/10.54499/2021.07370.BD (accessed on 30 June 2024)” and [CEECIND/04583/2017/CP1399/CT0003] “https://doi.org/10.54499/CEECIND/04583/2017/CP1399/CT0003 (accessed on 30 June 2024)”. It was also financially supported by the Base Funding [UIDB/04708/2020] with DOI 10.54499/UIDB/04708/2020 “https://doi.org/10.54499/UIDB/04708/2020 (accessed on 30 June 2024)” of the CONSTRUCT—Instituto de I&D em Estruturas e Construções—funded by national funds through the FCT/MCTES (PIDDAC). ; Portugal. Fundação para a Ciência e a Tecnologia; SFRH/BD/07370/2021 ; Portugal. Fundação para a Ciência e a Tecnologia; CEECIND/04583/2017/CP1399/CT0003 ; Portugal. Fundação para a Ciência e a Tecnologia; UIDB/04708/2020
Steel Slag Sub-Ballast for Sustainable Railway Track Infrastructure
[Abstract:] Railway lines require a significant amount of natural raw materials. Industrial by-products can be used instead, reducing the costs of natural aggregate exploration. This work analyzes a ballasted track’s short- and long-term performances when replacing conventional sub-ballast aggregate with steel slag. After an extensive laboratory characterization of the steel slag, the material performance was analyzed in a 3D numerical model of a ballasted track when included in a railway track. An empirical model was implemented and calibrated to predict the long-term permanent deformation induced in the track after many train passages. The results are compared with the allowable deformation limits required for conventional high-speed ballasted track railway lines. An additional analysis was conducted to assess the influence of steel slags on the critical speed of conventional railway tracks when used. The results show a residual impact on the critical speed value compared to the conventional sub-ballast made with natural aggregates. ; This work received funding by the Portuguese Science and Technology Foundation through the scholarships with reference [SFRH/BD/07370/2021] “https://doi.org/10.54499/2021.07370.BD (accessed on 30 June 2024)” and [CEECIND/04583/2017/CP1399/CT0003] “https://doi.org/10.54499/CEECIND/04583/2017/CP1399/CT0003 (accessed on 30 June 2024)”. It was also financially supported by the Base Funding [UIDB/04708/2020] with DOI 10.54499/UIDB/04708/2020 “https://doi.org/10.54499/UIDB/04708/2020 (accessed on 30 June 2024)” of the CONSTRUCT—Instituto de I&D em Estruturas e Construções—funded by national funds through the FCT/MCTES (PIDDAC). ; Portugal. Fundação para a Ciência e a Tecnologia; SFRH/BD/07370/2021 ; Portugal. Fundação para a Ciência e a Tecnologia; CEECIND/04583/2017/CP1399/CT0003 ; Portugal. Fundação para a Ciência e a Tecnologia; UIDB/04708/2020
Steel Slag Sub-Ballast for Sustainable Railway Track Infrastructure
Alves, Rubens (author) / Ramos, Ana (author) / Castanheira Pinto, Alexandre (author) / Rios, S. (author) / Fernández Ruiz, Jesús (author)
2024-01-01
doi:10.3390/infrastructures9070106
Article (Journal)
Electronic Resource
English
DDC:
624
Steel Slag Aggregate Characteristics Evaluation as Railway Ballast
| Springer Verlag | 2021
Behaviour of Steel Slag Ballast for Railway under Cyclic Loading
| TIBKAT | 2020