A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Post-cracking Strength Classification of Macro-synthetic Fibre Reinforced Concrete for Sleeper Application
Nowadays, timber and concrete are among the most extensively used materials for railway sleepers, characteristically considered as a crucial track component. However, due to recent concerns regarding the inferior quality, degradation, durability, high-cost and environmental impact of the conventional materials, this paper focuses on macro-synthetic fibre reinforced concrete (MSFRC) as a more sustainable alternative. Despite the encouraging strength characteristics of the innovative material, its practical implementation as a composite sleeper remains fairly limited due to the unknown post-cracking behaviour categorised through the fibre reinforced concrete (FRC) constitutive laws. Hence, the paper herein investigates the characteristic flexural residual strength (i.e. serviceability & ultimate) of MSFRC classified in terms of strength intervals and residual strength ratios as defined in the Fib Model Code. Experimental data will be adapted onto the design stress-strain relationship with an insightful comparison of the post-cracking propagation branch relative to different fibre volume content and fibre types. Therefore, this paper herein will present beneficial and non-beneficial behaviours of the compliant macro-synthetic fibre reinforced concrete towards railway structural applications.
Post-cracking Strength Classification of Macro-synthetic Fibre Reinforced Concrete for Sleeper Application
Nowadays, timber and concrete are among the most extensively used materials for railway sleepers, characteristically considered as a crucial track component. However, due to recent concerns regarding the inferior quality, degradation, durability, high-cost and environmental impact of the conventional materials, this paper focuses on macro-synthetic fibre reinforced concrete (MSFRC) as a more sustainable alternative. Despite the encouraging strength characteristics of the innovative material, its practical implementation as a composite sleeper remains fairly limited due to the unknown post-cracking behaviour categorised through the fibre reinforced concrete (FRC) constitutive laws. Hence, the paper herein investigates the characteristic flexural residual strength (i.e. serviceability & ultimate) of MSFRC classified in terms of strength intervals and residual strength ratios as defined in the Fib Model Code. Experimental data will be adapted onto the design stress-strain relationship with an insightful comparison of the post-cracking propagation branch relative to different fibre volume content and fibre types. Therefore, this paper herein will present beneficial and non-beneficial behaviours of the compliant macro-synthetic fibre reinforced concrete towards railway structural applications.
Post-cracking Strength Classification of Macro-synthetic Fibre Reinforced Concrete for Sleeper Application
RILEM Bookseries
Serna, Pedro (editor) / Llano-Torre, Aitor (editor) / Martí-Vargas, José R. (editor) / Navarro-Gregori, Juan (editor) / Camille, Christophe (author) / Hewage, Dayani Kahagala (author) / Mirza, Olivia (author) / Mashiri, Fidelis (author) / Kirkland, Brendan (author) / Clarke, Todd (author)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2020 ; Valencia, Spain
Fibre Reinforced Concrete: Improvements and Innovations ; Chapter: 64 ; 717-729
RILEM Bookseries ; 30
2020-11-05
13 pages
Article/Chapter (Book)
Electronic Resource
English
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