Title:
Performance of Innovative Precast Concrete Sleepers Prestressed with Glass Fiber-Reinforced Polymer Reinforcing Bars
Author(s):
Abdeldayem Hadhood, Hamdy M. Mohamed, Celestin Mwiseneza, and Brahim Benmokrane
Publication:
Structural Journal
Volume:
118
Issue:
1
Appears on pages(s):
277-288
Keywords:
American Railway Engineering and Maintenance-of-Way Association (AREMA); glass fiber-reinforced polymer (GFRP) bars; monoblock ties; prestressed; prestressing; railway; sleepers
DOI:
10.14359/51728186
Date:
1/1/2021
Abstract:
Replacing defective reinforced concrete railway sleepers has reportedly been urged by several businesses and maintenance agencies. The harsh environmental conditions, especially in North America, trigger material degradation and steel corrosion. Glass fiber-reinforced polymer (GFRP) bars have been increasingly used in a wide variety of applications. The present study presents an original, promising application of GFRP as prestressed reinforcement in concrete railway sleepers. For prestressed GFRP sleepers to be accepted as replacements for defective sleepers made with timber and concrete, they must pass several short- and long-term tests. Full-scale GFRP- and steel-reinforced concrete sleepers
were designed, tested, and compared according to the requirements of the American Railway Engineering and Maintenance-of-Way Association (AREMA). The test results show that GFRP- and steel-reinforced concrete sleepers achieved similar cracking levels and ultimate loads in the rail-seat negative and positive tests. The tested GFRP specimens met AREMA’s requirements for static and fatigue loading for use in freight and commuter rail systems with the designated loads, spacings, and train speed used in this study. The failure of the prestressed GFRP-RC sleepers was governed by shear-compression failure, while the prestressed steel-RC sleepers failed by crushing of the concrete due to the slippage of steel strands. Moreover, field inspection of GFRP-reinforced concrete sleepers after 3 years under actual service conditions reveal very competitive performance and no cracks. Lastly, the results of this study constitute a basic step toward establishing code provisions for using GFRP bars as prestressing reinforcement in concrete sleepers for railway applications.
Related References:
AASHTO, 2009, “Bridge Design Guide Specifications for GFRP-Reinforced Concrete Bridge Decks and Traffic Railings,” American Association of State Highway and Transportation Officials, Washington, DC.
ACI Committee 440, 2015, “Guide for the Design and Construction of Concrete Reinforced with Fiber-Reinforced Polymer Bars (ACI 440.1R-15),” American Concrete Institute, Farmington Hills, MI, 88 pp.
Ali, A. H.; Mohamed, H. M.; and Benmokrane, B., 2017, “Shear Strength of Circular Concrete Beams Reinforced with Glass Fiber-Reinforced Polymer Bars and Spirals,” ACI Structural Journal, V. 114, No. 1, pp. 39-49.
Amtrak, 2013, “American Recovery and Reinvestment Act: Amtrak has Taken Positive Steps to Safeguard Funds Used for Concrete Tie Replacement Program,” Report No. OIG-E-2013-017, https://amtrakoig.gov/.
AREMA, 2014, “Manual for Railway Engineering,” American Railway Engineering and Maintenance-of-Way Association, Lanham, MD.
ASTM D3171-15, 2015, “Standard Test Methods for Constituent Content of Composite Materials,” ASTM International, West Conshohocken, PA.
ASTM C39/C39M-18, 2018, “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens,” ASTM International, West Conshohocken, PA.
ASTM A421-15, 2015, “Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete,” ASTM International, West Conshohocken, PA.
ASTM D7205-16, 2016, “Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars,” ASTM International, West Conshohocken, PA.
Ferdous, W., and Manalo, A., 2014, “Failures of Mainline Railway Sleepers and Suggested Remedies–Review of Current Practice,” Engineering Failure Analysis, V. 44, pp. 17-35. doi: 10.1016/j.engfailanal.2014.04.020
Ferdous, W.; Manalo, A.; Van Erp, G.; Aravinthan, T.; Kaewunruen, S.; and Remennikov, A., 2015, “Composite Railway Sleepers–Recent Developments, Challenges, and Future Prospects,” Composite Structures, V. 134, pp. 158-168. doi: 10.1016/j.compstruct.2015.08.058
Pultrall Inc., 2014, V-ROD GFRP Rebars Data Sheet, www.pultrall.com
Rossini, M., and Nanni, A., 2019, “Composite Strands for Prestressed Concrete: State-of-the-Practice and Experimental Investigation into Mild Prestressing with GFRP,” Construction and Building Materials, V. 205, pp. 486-498. doi: 10.1016/j.conbuildmat.2019.02.045
Sym-Tech Precast Concrete Inc, St-Hyacinthe, QC. http://www.sym-techbeton.com/
Thun, H.; Utsi, S.; and Elfgren, L., 2008, “Load Carrying Capacity Of Cracked Concrete Railway Sleepers,” Structural Concrete, V. 9, No. 3, pp. 153-161. doi: 10.1680/stco.2007.00024
Van Dyk, B. J.; Dersch, M. S.; and Edwards, J. R., 2012, “International Concrete Crosstie and Fastening System Survey–Final Results,” University of Illinois at Urbana-Champaign, Urbana, IL.
Zawam, M.; Soudki, K.; and West, J. S., 2017, “Effect of Prestressing Level on the Time-Dependent Behavior of GFRP Prestressed Concrete Beams,” Journal of Composites for Construction, ASCE, V. 21, No. 4, p. 04017001. doi: 10.1061/(ASCE)CC.1943-5614.0000783
Zeman, J. C.; Edwards, J. R.; Barkan, C. P.; and Lange, D. A., 2009, “Failure Mode and Effect Analysis of Concrete Ties in North America,” Proceedings of the 9th International Heavy Haul Conference, pp. 270-278.