Abstract
Textile reinforced mortar (TRM) strengthening can improve the anti-aging performance of reinforced concrete (RC) slabs, and significantly improve the rust problem of steel plates and bending performance of RC slabs. To study the effect of TRM on the flexural capacity of two-way RC slab, four sided simply supported bending tests were conducted on two TRM strengthened concrete slabs and an unstrengthened control slab. And the effects of different strengthening techniques on the flexural capacity and bending deformation capacity of the two-way RC slabs were investigated. It was concluded that the application of TRM to strengthen the two-way RC slabs can effectively improve its bending bearing capacity and bending deformation capacity. Compared with the unstrengthened control slab, the bending bearing capacity of the two strengthened slabs increased by 54.2% and 43.8%, respectively, and the energy absorption value increased by 75.5% and 49.1%, respectively. In addition, compared with control slab, the post-cracking stiffness of TRM reinforced slabs treated with and without interface agents increased by 145.2% and 83.4%, respectively. This indicated that using interface agents for interface treatment could improve the adhesion between the TRM and the original RC slab, thereby preventing the initiation and development of cracks between the new and old interfaces. The strength utilization rate of textile was proposed, and the relationship between strength utilization rate of textile and maximum or minimum distribution network rate was analyzed. Based on the plastic hinge theory a simple calculation formula for the bending bearing capacity of the two-way RC slab strengthened with TRM was proposed, which provided the reference for the application of TRM for strengthening projects.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Al-Salloum YA, Siddiqui NA, Elsanadedy HM, Abadel AA, Aqel MA (2011) Textile-reinforced mortar versus FRP as strengthening material for seismically deficient RC beam-column joints. Journal of Composites for Construction 15:920–933, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000222
Azam R, Soudki K (2014) FRCM strengthening of shear-critical RC beams. Journal of Composites for Construction 18:04014012, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000464
Babaeidarabad S, Loreto G, Nanni A (2014) Flexural strengthening of RC beams with an externally bonded fabric-reinforced cementitious matrix. Journal of Composites for Construction 18:3049–3060, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000473
Bournas DA, Lontou PV, Papanicolaou CG, Triantafillou TC (2007) Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns. ACI Structural Journal 104:740–748, DOI: https://doi.org/10.14359/18956
Burgess l (2017) Yield-line plasticity and tensile membrane action in lightly-reinforced rectangular concrete slabs. Engineering Structures 138:195–214, DOI: https://doi.org/10.1016/j.engstruct.2017.01.072
D’Ambrisi A, Feo L, Focacci F (2012) Bond-slip relations for PBO-FRCM materials externally bonded to concrete. Composite Part B: Engineering 43:2938–2949, DOI: https://doi.org/10.1016/j.compositesb.2012.06.002
D’Ambrisi A, Focacci F (2011) Flexural strengthening of RC beams with cement-based composites. Journal of Composites for Construction 15:707–720, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000218
Deng ZC, Gong MG (2022) Experimental study on biaxial flexural behaviors of textile reinforced concrete slab with hybrid Fibers. Journal of Beijing University of Technology 48(4):367–377, DOI: https://doi.org/10.11936/bjutxb2020110042
Deng ZC, Lu YH, Gui YJ (2022) Flexural properties of ultra-high performance concrete reinforced with steel wire mesh or fiber mesh. Acta Materiae Compositae Sinica 39(10):4757–4768, DOI: https://doi.org/10.13801/j.cnki.fhclxb.20211022.002
Ebead U (2015) Inexpensive strengthening technique for partially loaded reinforced concrete beams: Experimental study. Journal of Materials in Civil Engineering 27:04015002, DOI: https://doi.org/10.1061/(ASCE)MT.1943-5533.0001249
Ebead U, Shrestha KC, Ahmed MS Refai El, Nanni A (2016) Effectiveness of fabric-reinforced cementitious matrix in strengthening reinforced concrete beams. Journal of Composites for Construction 21: 04016084, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000741
Koutas LN, Bournas DA (2017) Flexural strengthening of two-way RC slabs with textile-reinforced mortar: Experimental investigation and design equations. Journal of Composites for Construction 21: 04016065, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000713
Koutas LN, Zoi Tetta, Bournas DA, Triantafillou TC (2019) Strengthening of concrete structures with textile reinforced mortars: State-of-the-art review. Doctoral dissertation, American Society of Civil Engineers 27:958–961, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000882
Loreto G, Leardini L, Arboleda D, Nanni A (2013) Performance of RC slab-type elements strengthened with fabric-reinforced cementitious-matrix composites. Journal of Composites for Construction 18:213–226, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000415
Ombres L (2012) Flexural analysis of reinforced concrete beams strengthened with a cement based high strength composite material. Composites Structures 94:143–155, DOI: https://doi.org/10.1016/j.compstruct.2011.07.008
Papanicolaou C, Triantafillou T, Papantoniou I, Balioukos C (2009) Strengthening of two-way reinforced concrete slabs with Textile Reinforced Mortars (TRM). 4th Colloquium on Textile Reinforced Structures (CTRS4), Dresden, Germany 409–420
Rüsch H (1960) Researches toward a general flexural theory for structural concrete. Journal of the American Concrete Institute 57:1–28, DOI: https://doi.org/10.14359/8009
Scheerer S, Schladitz F, Curbach M (2015) Textile reinforced concrete–from the idea to a high performance material. Proceedings of the FERRO-11—11th International Symposium on Ferrocement and 3rd ICTRC–International Conference on Textile Reinforced Concrete, Aachen, Germany 7–10
Scheerer S, Zobel R, Egbert Müller, Senckpiel-Peters T, Schmidt A, Curbach M (2019) Flexural strengthening of RC structures with TRC–Experimental observations, design approach and plication. Applied Sciences 9:1322, DOI: https://doi.org/10.3390/app9071322
Schladitz F, Frenzel M, Ehlig D, Curbach M (2012) Bending load capacity of reinforced concrete slabs strengthened with textile reinforced concrete. Engineering Structures 40:317–326, DOI: https://doi.org/10.1016/j.engstruct.2012.02.029
Sneed LH Verre S, Carloni C, Ombres L (2016) Flexural behaviour of RC beams strengthened with steel-FRCM composite. Engineering Structures 127: 686–699, DOI: https://doi.org/10.1016/j.engstruct.2016.09.006
Thermou GE, Katakalos K, Manos G (2015) Concrete confinement with steel-reinforced grout jackets. Materials and Structures 48:1355–1376, DOI: https://doi.org/10.1617/s11527-013-0239-6
Trapko T, Urbańska D, Kamiński M (2015) Shear strengthening of reinforced concrete beams with PBO-FRCM composites. Composites Part B Engineering 80:63–72, DOI: https://doi.org/10.1016/j.compositesb.2015.05.024
Triantafillou TC, Papanicolaou CG (2006) Shear strengthening of reinforced concrete members with textile reinforced mortar (TRM) jackets. Materials and Structures 391:93–103, DOI: https://doi.org/10.1617/s11527-005-9034-3
Yin SP, Peng C, Jin ZY (2017) Research on mechanical properties of axial-compressive concrete columns strengthened with TRC under a conventional and chloride wet-dry cycle environment. Journal of Composites for Construction 21:04016061, DOI: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000725
Acknowledgments
Not Applicable
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Deng, Z., Xia, Q., Gong, M. et al. Flexural Strengthening of Two-Way RC Slabs with Textile Reinforced Mortar: Experimental Study and Calculation Model. KSCE J Civ Eng 27, 5268–5280 (2023). https://doi.org/10.1007/s12205-023-2174-6
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12205-023-2174-6