Effect of Concrete Composition on Splitting Cracks in Prestressed Concrete Railroad Ties: Application of Fracture Mechanics

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dc.contributor.author Dastgerdi, Aref S.
dc.contributor.author Peterman, Robert J.
dc.contributor.author Beck, B. Terry
dc.contributor.author Riding, Kyle A.
dc.date.accessioned 2021-04-02T22:51:10Z
dc.date.available 2021-04-02T22:51:10Z
dc.date.issued 2021-03-01
dc.identifier.uri https://hdl.handle.net/2097/41316
dc.description.abstract The effect of concrete composition on end-splitting cracks in pretensioned concrete members was investigated. Specific parameters included the effect of aggregate shape and content, water-to-cementitious (w/cm) ratio, fly ash, paste and air void content. For each mixture evaluated, prisms were load tested in three-point bending at 4000, 6000 and 8000 psi to determine the effect of concrete compressive strength on crack growth potential. Corresponding splitting tensile tests were also conducted on samples at each compressive strength for all mixtures. Results show that increasing angularity, aggregate size distribution, and decreasing w/cm ratio improve fracture toughness by as much as 28% whereas changing other parameters had little effect. All improving factors were seen to be most effective at low strengths. A statistical model predicting fracture toughness was developed, and the results correlated well with observed cracking in pretensioned concrete members.
dc.publisher Rural Railroad Safety Center, Kansas State University.
dc.rights This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.uri https://rightsstatements.org/vocab/InC/1.0/
dc.subject Fracture Toughness
dc.subject Two-Parameter Model
dc.subject Tpm
dc.subject Prestressed Concrete
dc.subject Longitudinal Splitting Cracks
dc.title Effect of Concrete Composition on Splitting Cracks in Prestressed Concrete Railroad Ties: Application of Fracture Mechanics
dc.type Text
dc.date.published 2021


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This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). Except where otherwise noted, the use of this item is bound by the following: This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

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