Technical Reports

Material and Manufacturing Requirements for Freeze-Thaw Durable Concrete Railroad Ties: Volume I

  • 21
  • Aug
  • 2018
AUTHOR: Federal Railroad Administration
OFFICE: RPD
SUBOFFICE: RPD-31
REPORT NUMBER: DOT/FRA/ORD-18/31
SUBJECT: Testing
KEYWORDS: Concrete consolidation, air void system, freeze-thaw durability, concrete crosstie
ABSTRACT: This research program was conducted as a partnership between the University of Illinois at Urbana-Champaign (UIUC), Kansas State University (KSU), and the Illinois Department of Transportation to study the freeze-thaw durability of concrete railroad ties as air is purposefully entrained in concrete railroad ties to impart freeze-thaw durability, and vibration used during manufacture to consolidate concrete can reduce entrained air needed for freeze-thaw protection. This report is divided into two volumes. Volume I is a summary report that emphasizes key project methodologies, results, and recommendations. Volume II contains detailed project results from field monitoring of concrete tie temperature and moisture, laboratory experiments, and modeling performed. The objective of this research was to gain insight into the environment conditions that concrete ties experience, and to better understand how the interaction of materials and processes used in tie construction affect freeze-thaw durability. Key research questions were answered by measuring concrete tie manufacturing conditions, as well as developing a robust laboratory-based experimental research program, computational modeling of systems, and measuring field conditions. The results of this research program is to facilitate improved concrete tie specifications and quality assurance testing.

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