RESEARCH ON FLEXURAL CALCULATION THEORY OF REINFORCED CONCRETE T-BEAM STRENGTHENED BY STEEL WIRE MESH AND POLYURETHANE CEMENT (SWM-PUC) COMPOSITE
DOI:
https://doi.org/10.14311/CEJ.2025.02.0015Keywords:
Steel Wire Mesh and Polyurethane (SWM-PUC) Cement Composite, Flexural Strengthening, Reinforced Concrete Beam, Calculation TheoryAbstract
In order to solve the problem of poor bonding and easy peeling of reinforced concrete structure strengthened by steel wire mesh and polymer mortar (SWM-PM). In this paper, a steel wire mesh and polyurethane cement (SWM-PUC) composite strengthening technique is presented. The flexural properties of one unreinforced beam, two SWM-PM strengthened beams and four SWM-PUC composite strengthened beams were studied experimentally. The experimental results show that the SWM-PUC composite reinforcement layer can improve the load carrying capacity and rigidity of reinforced concrete beams and limit the unfolding cracks significantly. The SWM-PUC composite strengthened beams have pure bending damage and peeling damage between the strengthening layer and the concrete has not occurred. However, SWM-PM strengthened beams with the same SWM reinforcement ratio occurred with peeling damage between the reinforcement and the concrete. On basis of an experimental study, the theoretical formulas for cracking load, ultimate load, deflection and width of crack of SWM-PUC composite strengthened beams are proposed by the simplified stress-strain constitutive relation of the material and the theoretical formulas are deduced with the code. By contrasting the test results with the theoretical computation results, the accuracy of the experiment results and the reliability of the theoretical formulas were verified.
Downloads
References
Qeshta I M I, Shafigh P, Jumaat M Z., 2015. Flexural behavior of RC beams strengthened with wire mesh-epoxy composite. Construction and Building Materials, vol. 79, p.104-114.
Bergamo O, Pignat M, Puca C., 2018 Passive methods for the fast seismic characterization of structures: the case of Silea Bridge. International Journal of Civil Engineering, vol. 16, p. 807-822.
Rahman M M, Jumaat M Z, Rahman M A, Qeshta I M., 2015. Innovative hybrid bonding method for strengthening reinforced concrete beam in flexure. Construction and Building Materials, vol. 79, p. 370-378.
Cardinale G, Orlando M., 2004. Structural evaluation and strengthening of a reinforced concrete bridge. Journal of Bridge Engineering, vol. 9(1), p. 35-42.
Naser M Z, Hawileh R A, Abdalla J A., 2019 Fiber-reinforced polymer composites in strengthening reinforced concrete structures: A critical review[J]. Engineering Structures, vol. 198, p. 109542.
Lee J K, Lee J H., 2002. Nondestructive evaluation on damage of carbon fiber sheet reinforced concrete. Composite structures, vol. 58(1), p. 139-147.
Ge W, Tang R, Wang Y, Zhang Z, Sun C, Yao S, Lu W., 2022. Flexural performance of ECC-concrete composite beams strengthened with carbon fiber sheet. Results in Engineering, vol. 13, p. 100334.
Zheng X, Wan B, Huang P, Huang J., 2019. Experimental study of hybrid strengthening technique using carbon fiber laminates and steel plates for reinforced concrete slabs. Construction and Building Materials, vol. 210, p. 324-337.
Qeshta I M, Shafigh P, Jumaat M Z, Abdulla A I, Ibrahim Z, Alengaram U J., 2014. The use of wire mesh–epoxy composite for enhancing the flexural performance of concrete beams. Materials & Design, vol. 60, p. 250-259.
Xing G, Wu T, Liu B, Huang H, Gu S., 2010. Experimental investigation of reinforced concrete T-beams strengthened with steel wire mesh embedded in polymer mortar overlay. Advances in structural Engineering, vol. 13(1), p. 69-79.
LIN Y D, ZONG Z H, LIN Q F., 2012. Experiment study on flexural behavior of RC/PRC beams strengthened with high strength steel wire mesh and permeable polymer mortar. Engineering Mechanics, vol. 29(9), p. 141-149.
Ma H, Li Z., 2013. Microstructures and mechanical properties of polymer modified mortars under distinct mechanisms. Construction and Building Materials, vol. 47, p. 579-587.
Aggarwal L K, Thapliyal P C, Karade S R., 2007. Properties of polymer-modified mortars using epoxy and acrylic emulsions. Construction and Building Materials, vol. 21(2), p. 379-383.
Mahdi F, Abbas H, Khan A A., 2010. Strength characteristics of polymer mortar and concrete using different compositions of resins derived from post-consumer PET bottles. Construction and Building Materials, vol. 24(1), p. 25-36.
Araujo C A M, Loriggio D D, Da Camara J M M N., 2011. Anchorage failure and shear design of hollow‐core slabs. Structural Concrete, vol. 12(2), p. 109-119.
Cao Q, Jiang H, Wei R, Deng Y., 2016. Shear behavior of anchor blocks in externally prestressed concrete bridges. Proceedings of the Institution of Civil Engineers-Structures and Buildings, vol. 169(9), p. 657-668.
Yuan F, Chen M, Pan J., 2020. Flexural strengthening of reinforced concrete beams with high-strength steel wire and engineered cementitious composites. Construction and Building Materials, vol. 254, p. 119284.
Fischer G, Li V C., 2007. Effect of fiber reinforcement on the response of structural members. Engineering Fracture Mechanics, vol. 74(1-2), p. 258-272.
Ranade R, Li V C, Heard W F., 2015. Tensile rate effects in high strength-high ductility concrete. Cement and Concrete Research, vol. 68, p. 94-104.
Xing G, Wu T, Liu B, Huang H, Gu S., 2010. Experimental investigation of reinforced concrete T-beams strengthened with steel wire mesh embedded in polymer mortar overlay. Advances in structural Engineering, vol. 13(1), p. 69-79.
Wang Y, Sun Q, Ding H, Leng S, Cui H, Xu B, Cui H., 2022. Investigation of interfacial bonding properties of polyurethane concrete and cement concrete/steel reinforcement. Advances in Materials Science and Engineering, vol. 2022(1), p. 5644468.
Li L, Yu T, Wu Y, Wang Y, Guo C, Li J., 2022. Research on the properties of a new type of polyurethane concrete for steel bridge deck in seasonally frozen areas. Coatings, vol. 12(11), p. 1732.
Hussain H K, Zhang L Z, Liu G W., 2013. An experimental study on strengthening reinforced concrete T-beams using new material poly-urethane-cement (PUC). Construction and Building Materials, vol. 40, p. 104-117.
Hussain H K, Liu G W, Yong Y W., 2014. Experimental study to investigate mechanical properties of new material polyurethane–cement composite (PUC). Construction and Building materials, vol. 50, p. 200-208.
Kexin Z, Quansheng S., 2016. Strengthening of a reinforced concrete bridge with polyurethane-cement composite (PUC). The Open Civil Engineering Journal, vol.10(1).
National Standard of the People’s Republic of China. 2011. GB 50010-2011. Code for Design of Concrete Structures. Beijing: China Architecture & Building Press.
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Author
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
