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Performance Enhancement of Reinforced Concrete One-Way Slabs With Maximum-Moment Openings Using CFRP Strengthening Techniques: Experimental and Numerical Analysis

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May 17, 2025

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S. T. SMITH and S. J. KIM, “Strengthening of one-way spanning RC slabs with cutouts using FRP composites,” Constr. Build. Mater., vol. 23, no. 4, pp. 1578–1590, 2009. Search in Google Scholar

E. DAVID and J. D. NEUNER, “Environmental durability studies for FRP systems: definition of normal conditions of use of FRP for structural strengthening applications,” in FRP Composites in Civil Engineering. Proceedings of the International Conference on FRP Composites in Civil Engineering. Hong Kong Institution of Engineers, Hong Kong Institution of Steel Construction, 2001. Search in Google Scholar

N. F. GRACE and S. B. SINGH, “Durability evaluation of carbon fiber-reinforced polymer strengthened concrete beams: experimental study and design,” ACI Struct. J., vol. 102, no. 1, pp. 40–53, 2005. Search in Google Scholar

J. CHIN, M. HAIGHT, W. HUGHES, and T. NGUYEN, “Environmental effects on composite matrix resins used in construction,” Proc. CDCC 1998, pp. 229–242, 1998. Search in Google Scholar

M. O. HAMEED and R. A. DAUD, “Behavior of Fatigue Damaged Reinforced Concrete One-Way Slabs Repaired With CFRP Sheets,” Civil and Environmental Engineering, vol. 20, no. 1, pp. 364–376, Jun. 2024, doi: https://doi.org/10.2478/cee-2024-0028. Search in Google Scholar

J. TEJCHMAN and I. MARZEC, “Experiments and numerical analyses for composite RC-EPS slabs,” Comput. Concr. An Int. J., vol. 20, no. 6, pp. 689–704, 2017. Search in Google Scholar

U. KIM, Y. HUANG, and P. R. CHAKRABARTI, “Modeling of post-tensioned one-way and two-way slabs with unbonded tendons,” Comput. Concr. An Int. J., vol. 13, no. 5, pp. 587–601, 2014. Search in Google Scholar

M. M. SMADI and K. A. BELAKHDAR, “Nonlinear finite element analysis of high strength concrete slabs,” Comput. Concr., vol. 4, no. 3, pp. 187–206, 2007. Search in Google Scholar

Ö. ANIL, N. KAYA, and O. ARSLAN, “Strengthening of one way RC slab with opening using CFRP strips,” Constr. Build. Mater., vol. 48, pp. 883–893, 2013, doi: https://doi.org/10.1016/j.conbuildmat.2013.07.093. Search in Google Scholar

A. M. AL-HAFIZ, S. S. CHIAD, and M. S. FARHAN, “Flexural strength of reinforced concrete oneway opened slabs with and without strengthening,” Aust. J. Basic Appl. Sci., vol. 7, no. 6, pp. 642–651, 2013. Search in Google Scholar

M. ARDUINI, A. NANNI, and M. ROMAGNOLO, “Performance of one-way reinforced concrete slabs with externally bonded fiber-reinforced polymer strengthening,” Struct. J., vol. 101, no. 2, pp. 193–201, 2004, doi: 10.14359/13016. Search in Google Scholar

P. CASADEI, T. IBELL, and A. NANNI, “Experimental results of one-way slabs with openings strengthened with CFRP laminates,” in Fibre-Reinforced Polymer Reinforcement for Concrete Structures: (In 2 Volumes), World Scientific, 2003, pp. 1097–1106. doi: https://doi.org/10.1142/9789812704863_0105. Search in Google Scholar

Y. CHOI, I. H. PARK, S. G. KANG, and C.-G. CHO, “Strengthening of RC slabs with symmetric openings using GFRP composite beams,” Polymers (Basel)., vol. 5, no. 4, pp. 1352–1361, 2013, doi: https://doi.org/10.3390/polym5041352. Search in Google Scholar

W. D. SALMAN, “Strengthening of reinforced concrete one-way slabs with opening using CFRP strip in flexural,” Int. J. Sci. Res, vol. 4, no. 5, pp. 980–991, 2015. Search in Google Scholar

H. K. SHEHAB, A. S. EISA, and K. A. EL-AWADY, “Strengthening of cutouts in existing one-way spanning RC flat slabs using CFRP sheets,” Int. J. Concr. Struct. Mater., vol. 11, pp. 327–341, 2017, doi: https://doi.org/10.1007/s40069-017-0186-7. Search in Google Scholar

K. H. TAN and H. ZHAO, “Strengthening of openings in one-way reinforced-concrete slabs using carbon fiber-reinforced polymer systems,” J. Compos. Constr., vol. 8, no. 5, pp. 393–402, 2004, doi: https://doi.org/10.1061/(ASCE)1090-0268(2004)8:5(393). Search in Google Scholar

A. VASQUEZ and V. M. KARBHARI, “Fiber-reinforced polymer composite strengthening of concrete slabs with cutouts,” Struct. J., vol. 100, no. 5, pp. 665–673, 2003, doi: 10.14359/12808. Search in Google Scholar

A. S. GENIKOMSOU and M. A. POLAK, “Effect of openings on punching shear strength of reinforced concrete slabs-finite element investigation,” ACI Struct. J., vol. 114, no. 5, p. 1249, 2017, doi: 10.14359/51689871. Search in Google Scholar

O. ENOCHSSON, J. LUNDQVIST, B. TÄLJSTEN, P. RUSINOWSKI, and T. OLOFSSON, “CFRP strengthened openings in two-way concrete slabs–An experimental and numerical study,” Constr. Build. Mater., vol. 21, no. 4, pp. 810–826, 2007, doi: https://doi.org/10.1016/j.conbuildmat.2006.06.009. Search in Google Scholar

G. FORET and O. LIMAM, “Experimental and numerical analysis of RC two-way slabs strengthened with NSM CFRP rods,” Constr. Build. Mater., vol. 22, no. 10, pp. 2025–2030, 2008, doi: https://doi.org/10.1016/j.conbuildmat.2007.07.027. Search in Google Scholar

MUTAZ KADHIM MEDHLOM and E. ABED, “Behavior and Load Capacity of Concrete Slab Reinforced by CFRP Bar and Strengthening by CFRP Laminates,” Civil and Environmental Engineering, vol. 19, no. 1, pp. 72–85, May 2023, doi: https://doi.org/10.2478/cee-2023-0007. Search in Google Scholar

W. S. HAMEEDI, I. K. VÖLGYI, and W. S. HAMEEDI, “Simulating the flexural performance of oneway reinforced concrete slabs with openings strengthened by the use of carbon fiber reinforced polymer (CFRP),” Concr. Struct., vol. 24, pp. 90–96, 2023, doi: https://doi.org/10.32970/CS.2023.1.13. Search in Google Scholar

N. KAYA and Ö. ANIL, “Prediction of load capacity of one way reinforced concrete slabs with openings using nonlinear finite element analysis,” J. Build. Eng., vol. 44, p. 102945, 2021, doi: https://doi.org/10.1016/j.jobe.2021.102945. Search in Google Scholar

M. ABD ALRAZEK, A.-E. SHOEIB, M. KADRY, and E. I. E. YOUSSEF, “Strengthening of RC Flat Slabs with openings Subjected to Flexure by Using NSM Techniques,” Al-Azhar Univ. Civ. Eng. Res. Mag., vol. 43, no. 2, 2021. Search in Google Scholar

R. AL-ROUSAN, M. ISSA, and H. SHABILA, “Performance of reinforced concrete slabs strengthened with different types and configurations of CFRP,” Compos. Part B Eng., vol. 43, no. 2, pp. 510–521, 2012, doi: https://doi.org/10.1016/j.compositesb.2011.08.050. Search in Google Scholar

Z. F. CHEN et al., “Evaluation of CFRP, GFRP and BFRP material systems for the strengthening of RC slabs,” J. Reinf. Plast. Compos., vol. 27, no. 12, pp. 1233–1243, 2008, doi: https://doi.org/10.1177/0731684407084122. Search in Google Scholar

PEDRO SILVA and RAVI KANITKAR, ACI 440.2R design and construction guidelines for the strengthening of concrete structures using externally bonded FRP systemsand The New Seismic Strengthening Guidelines Using FRP. American Concrete Institute United States, 2018. doi: 10.14359/51713341. Search in Google Scholar

P. DESAYI and S. KRISHNAN, “Equation for the stress-strain curve of concrete,” in Journal Proceedings, 1964, pp. 345–350. doi: 10.14359/7785. Search in Google Scholar

A. A. ELWI and D. W. MURRAY, “A 3D hypoelastic concrete constitutive relationship,” J. Eng. Mech. Div., vol. 105, no. 4, pp. 623–641, 1979, doi: https://doi.org/10.1061/JMCEA3.0002510. Search in Google Scholar

ACI COMMITTEE 318, ACI CODE-318-19: Building Code Requirements for Structural Concrete and Commentary. American Concrete Institute United States, 2019. [Online]. Available: https://www.concrete.org/store/productdetail.aspx?ItemID=318U19&Language=English&Units=US_Units Search in Google Scholar

D. A. HORDIJK, “Local approach to fatigue of concrete.,” 1993. Search in Google Scholar

ACI COMMITTEE 318, Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05). Farmington Hills, Mich.: Farmington Hills, Mich., American Concrete Institute, 2005. Search in Google Scholar

C. E.-I. DU BÉTON, CEB-FIP model code 1990: Design code. Thomas Telford Publishing, 1993. Search in Google Scholar

A. BELARBI and T. T. C. HSU, “Constitutive laws of concrete in tension and reinforcing bars stiffened by concrete,” Struct. J., vol. 91, no. 4, pp. 465–474, 1994, doi: 10.14359/4154. Search in Google Scholar

H. M. AFEFY and T. M. FAWZY, “Strengthening of RC one-way slabs including cut-out using different techniques,” Eng. Struct., vol. 57, pp. 23–36, 2013, doi: https://doi.org/10.1016/j.engstruct.2013.09.013. Search in Google Scholar

W. D. SALMAN, A. A. MANSOR, and M. MAHMOOD, “Behavior of reinforced concrete one-way slabs strengthened by CFRP sheets in flexural zone,” Int. J. Civ. Eng. Technol, vol. 9, no. 10, pp. 1872–1881, 2018. Search in Google Scholar

A. A. MANSOR, W. D. SALMAN, A. L. ABBAS, and H. J. KHALIFA, “Additional Steel Reinforcement Surrounded Opening as Strengthening in Reinforced Concrete One Way Slabs,” Int. J. Civ. Eng. Technol., vol. 9, no. 11, pp. 1662–1671, 2018. Search in Google Scholar