Laboratory Study of Freezing-Thawing Impacts on Railway Ballast Aggregates

Heydari, Hamidreza; Nadermohammady, Sina

doi:10.22068/ijrare.359

Volume 11, Issue 2 (9-2024) IJRARE 2024, 11(2): 39-47 | Back to browse issues page

‎ 10.22068/ijrare.359

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Heydari H, Nadermohammady S. Laboratory Study of Freezing-Thawing Impacts on Railway Ballast Aggregates. IJRARE 2024; 11 (2) :39-47
URL: http://ijrare.iust.ac.ir/article-1-359-en.html

Laboratory Study of Freezing-Thawing Impacts on Railway Ballast Aggregates

Hamidreza Heydari

, Sina Nadermohammady

School of Railway Engineering, Iran University of Science & Technology

Abstract: (72 Views)

The freezing-thawing phenomenon is one of the most well-documented causes of aggregate degradation. This study investigates the impacts of freeze-thaw cycles on railway ballast aggregates through comprehensive laboratory tests. The aggregates were subjected to freeze-thaw cycles according to BS EN 1367-1 standards, and deterioration evaluation indexes were determined. The results indicate significant increases in the Los Angeles abrasion, Micro-Deval impact, and crushing indices under freeze-thaw conditions compared to normal temperature conditions. The obtained results indicate that the durability indices under freezing-thawing cycles, led to an average reduction of 20%. The findings highlight the critical need for improved ballast materials and maintenance strategies to enhance the durability and performance of railway infrastructure in cold regions.

Keywords: Freezing-thawing, climate change effect, ballast aggregates, laboratory tests, railway infrastructures.

Full-Text [PDF 432 kb] (74 Downloads)

Type of Study: Research | Subject: Railway track and structures