Potential of epoxidised natural rubber alumina nanoparticles (ENRAN) sheet as local bridge pier scour countermeasure

Habib, Ibtesam and Mohtar, Wan Hanna Melini Wan and El-Shafie, Ahmed and Sharil, Suraya (2021) Potential of epoxidised natural rubber alumina nanoparticles (ENRAN) sheet as local bridge pier scour countermeasure. Ain Shams Engineering Journal, 12 (2). pp. 1255-1265. ISSN 2090-4479, DOI https://doi.org/10.1016/j.asej.2020.07.030.

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This study attempts to reduce scour depth due to localised scour around a bridge pier by introducing Epoxidised Natural Rubber Alumina Nanoparticles (ENRAN) sheet acting as bridge pier sheathing. The performance of the ENRAN sheet was assessed based on the configuration of slots and by roughening with 1 cm diameter spheres. Experiments were conducted with pier shapes of cylindrical, square, and rectangular using a fixed sediment bed with median grain size (600 mu m). Coarser slot spatial arrangement is more efficient in reducing 17% scour depth (from the non-sheathed pier), whereas closer placement of the roughened element has better performance up to 27%. Experiments were extended to investigate the combined slotted-roughened configuration, where higher scour reduction (35%) was observed, even for a rectangular shape. Not only the flexibility of the ENRAN sheet allows for installation for any pier shape, but also it's durable characteristics proved ENRAN as an attractive method, providing self-protection to the bridge pier to minimise scouring. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of Faculty of Engineering, Ain Shams University.

Item Type: Article
Funders: Universiti Kebangsaan Malaysia (DIP-2018-011)
Uncontrolled Keywords: Local scour; Bridge pier; ENRAN sheet; Sheathing countermeasure
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Mar 2022 03:51
Last Modified: 21 Mar 2022 03:51
URI: http://eprints.um.edu.my/id/eprint/26577

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