Fiber-Reinforced Concrete in Closure Pours Over Piers

Ozyildirim, H. Celik; Khakimova, Evelina; Nair, Harikrishnan; Moruza, Gail M.

doi:10.14359/51689561

Cited by 1 publication

(3 citation statements)

References 12 publications

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“…Some researchers attribute the cracking to shrinkage and temperature gradients. As a result, several studies have been focusing on new material designs with improved tensile strength [Li et al, 2003;Ozyildirim et al, 2017;Hoomes et al, 2017]. Other researchers attribute the cracks to the tension force resulted from continuity moments, poor construction practices, and improper detailing for the adequate accommodation of the bridge superstructure movement [Aktan et al, 2008;Li et al, 2003;Ulku et al, 2009;Okeil and El-Safty, 2005].…”

Section: Objectives and Scopementioning

confidence: 99%

“…2.2.3.1 Ozyildirim et al Ozyildirim et al [2017] evaluated the performance of different types of concrete materials at eight rehabilitated joints using link slabs. Two of the link slabs were constructed using rapid-set cement and latex modified concrete (LMC).…”

Section: Virginia Department Of Transportation (Vdot)mentioning

confidence: 99%

“…Leakage has been recognized as the primary cause of deterioration in link slabs. The use of low permeability and high durability concretes is highly recommended for the bridge systems [Ozyildirim et al, 2017]. The addition of fibers in the mixtures has been used to improve crack control and reduce the steel reinforcement ratio required in a conventional link slab [Lepech and Li, 2009;Zheng et al, 2018].…”

Section: Summary Of the Literature And Practice Reviewmentioning

confidence: 99%

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Link Slab Details and Materials

Haikal¹,

Ramírez²,

Jahanshahi³

et al. 2019

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This report contains the findings of a synthesis study on the use of link slabs to eliminate intermediate joints in bridges of Indiana. The study was conducted under the sponsorship of the Joint Transportation Research Program. The motivation for the study was to investigate this promising technique to mitigate the damage associated with expansion joints that has long been recognized as a persistent and costly issue negatively impacting the bridge service life. The report summarizes the background information and motivation for the study. It also provides a description of the report organization. The results of an extensive literature review of DOTs' experience related to the use of this system and main research findings are presented as well as construction practice and examples of application. The results of the analysis of a bridge in Indiana where the link slab system has been implemented are presented. The bridge connecting the State Road 68 over the Interstate 64 was selected as a representative bridge based on the analysis of the inspection. A parametric study on the effects of various parameters was conducted to evaluate the effect of support conditions and debonded length on the stress distribution and potential crack initiation in link slabs. Each variable was investigated separately to isolate its effect. Two bridge structures were investigated in this study. The first structure (Case 1) represents a bridge structure rehabilitated using link slabs. A second bridge structure (Case 2) with the same geometrical and material properties, but with a continuous and fully bonded deck, was also included in the parametric study for comparison purposes. This structure simulated new bridge construction.

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