United States Department of Transportation
i
A Wire Indent Profiling System for the Assessment of Crosstie Bond and Splitting Propensity
-
2019-03-01
[PDF-670.51 KB]
Details:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Research Results
-
Corporate Publisher:
-
Abstract:This research result highlights a significant outcome from a task within a larger research project entitled, “Developing Qualification Tests to Ensure Proper Selection and Interaction of Pretensioned Concrete Railroad Tie Materials.” This research is performed by Kansas State University (KSU) and sponsored by the Federal Railroad Administration (FRA). The project started in 2015 and will continue through Spring 2019. This report highlights the development and testing of an automated, high-resolution, non-contact wire indent profile measurement system designed to measure geometric parameters of prestressed concrete reinforcement wire. This tool measures wire features that have a relationship to the bond and splitting performance of concrete crossties. This new technology overcomes the limitations of manual measurement techniques. The system can measure large segments of wire to yield statistically significant samples of indent parameters including indent depth, sidewall angle, sidewall area, and volume. This system represents a valuable tool to aid in identifying the key indent geometry features related to transfer length and cracking propensity, thereby ensuring high-quality bond and eliminating the potential for in-track tie splitting failures.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
