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- W605079929 abstract "To meet the increasingly stringent design and performance requirements due to increasing cumulative gross tonnages from heavy-haul freight operations, along with increased high-speed inter-city passenger rail development, improvements in concrete crosstie designs are needed. Rail Seat Deterioration (RSD) continues to be identified as one of the primary factors limiting concrete crosstie service life in North America. RSD refers to the degradation of material at the contact interface between the concrete crosstie rail seat and the rail pad that protects the bearing area of the crosstie. Industry experts consider abrasion to be a viable mechanism leading to RSD. A lack of understanding of the complex interactions affecting the severity of abrasion has resulted in an iterative design process for concrete crossties and fastening systems. The objective of this study is to quantify the abrasion performance of rail seats by using a variety of concrete admixtures and materials. To simulate the abrasive wear mechanism of RSD, a Small-Scale Abrasion Resistance Test (SSART) was designed by researchers at UIUC. Additionally, a theoretical framework to model and predict abrasive wear was developed using statistical techniques. Data obtained from the SSART and the statistical model will help the rail industry mechanistically design concrete crossties by improving the current understanding of the performance of concrete crosstie mix designs. Preliminary results show that the addition of metallic fine aggregates (MFA), steel fibers, and the application of coatings improve the abrasion resistance of concrete specimens." @default.
- W605079929 created "2016-06-24" @default.
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- W605079929 date "2014-11-10" @default.
- W605079929 modified "2023-09-23" @default.
- W605079929 title "Investigation of Material Improvements to Mitigate the Abrasive Wear Mechanism of Concrete Crosstie Rail Seat Deterioration (RSD)" @default.
- W605079929 hasPublicationYear "2014" @default.
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