Experimental Investigation of the Cyclic Behavior of Steel-Slag Ballast Mixed with Tire-Derived Aggregate

AbstractIn this study, the cyclic behavior of steel slag ballast materials mixed with tire-derived aggregate (TDA) is experimentally investigated. To this end, a series of ballast box tests are carried out to investigate the behavior of different mixtures of TDA-slag ballast materials with similar g...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2021-02, Vol.33 (2)
Main Authors: Mehran Khoshoei, Sayyed, Mortazavi Bak, Hamid, Mahdi Abtahi, Sayyed, Mahdi Hejazi, Sayyed, Shahbodagh, Babak
Format: Article
Language:English
Subjects:
Building materials
Civil engineering
Damping ratio
Railroad ballast
Railway engineering
Shape effects
Slag
Stiffness
Technical Papers
Weight
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Summary:AbstractIn this study, the cyclic behavior of steel slag ballast materials mixed with tire-derived aggregate (TDA) is experimentally investigated. To this end, a series of ballast box tests are carried out to investigate the behavior of different mixtures of TDA-slag ballast materials with similar gradation to American Railway Engineering and Maintenance-of-Way Association (AREMA) 4. The TDA is mixed with the slag at different gradations and weight ratios to determine the optimum percentage. According to the test results, the settlement and damping ratio increase with the increase in the TDA percentage, whereas the breakage index and the stiffness of the ballast decrease. TDA of 10% by weight (16.5% by volume) is selected as the optimum percentage for the mixture based on the dynamic stiffness and damping ratio. The same set of tests were also performed on the punched TDA-slag ballast samples to study the effects of the TDA shape on the behavior of the ballast.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0003586