Development of low-strength stabilization method for fouled ballasted tracks

Kageyama, Takahiro; Nakamura, Takahisa; Kijiya, Ippei; Momoya, Yoshitsugu; Akagi, Hirokazu; Saito, Ryuji

doi:10.1016/j.trgeo.2022.100765

Cited by 1 publication

(2 citation statements)

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“…Collectively, these advancements underscore a paradigm shift in the railway industry toward more efficient, durable, and sustainable ballast track stabilization methods [13]. The research findings and innovations of numerous scholars, including those mentioned, promise to elevate railway infrastructure performance, reduce maintenance demands, and ultimately contribute to the long-term viability of railway systems worldwide [12].…”

Section: Introductionmentioning

confidence: 99%

“…Elastic elements, including under sleeper pads and rubberized aggregates, may reduce track deterioration and vibrations but can potentially decrease overall track bearing capacity and increase global settlement [2]. Geosynthetics and polyurethane-based techniques aim to decrease deformations and increase maintenance intervals [13]; however, they come with high initial costs and lower productivity, categorizing them as extraordinary maintenance operations. Ballast bonding, although effective in reducing maintenance needs, may not be economically viable for widespread implementation [7].…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Railway Track Stabilization with Epoxy Resin and Crumb Rubber Powder-Modified Cement Asphalt Mortar

Lee,

Yun,

2023

Polymers

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This research investigates the quantitative impact of incorporating epoxy resin and crumb rubber powder (CRP) into cement asphalt mortar (CAM) for railway track stabilization. The study reveals significant improvements in various key parameters compared to conventional CAM. The modified CAM exhibits a 12.7% reduction in flow time, indicative of enhanced flowability, and a substantial 62.4% decrease in the mixing stability gap, demonstrating superior mixing stability. Additionally, the modified CAM displays remarkable early-age compressive strength, with increases of up to 15.3% compared to traditional CAM formulations. Importantly, the modified CAM showcases robust resistance to challenging environmental conditions, with only a 6.7% strength reduction after exposure to sulfuric acid, highlighting its acid resistance, and exceptional freeze–thaw resistance, with a mere 1.5% strength reduction after undergoing six cycles. In a mock-up test simulating real-world conditions, the modified CAM effectively prevents ballast layer settlement, underscoring its potential to enhance the durability of railway track infrastructure. These quantitative findings not only endorse the practical feasibility of epoxy resin and CRP-enhanced CAM but also suggest its potential to contribute significantly to railway track longevity, reduce maintenance expenditures, and ensure operational reliability.

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Section: Introductionmentioning

confidence: 99%