vol28no2pa9

TJES: Dheyab A , Raoof SM, .Textile-Reinforced Mortar (TRM) Strengthened OneWay Reinforced Concrete Slabs. Tikrit Journal of Engineering Sciences 2021; 28(2): 107- 123.

APA: Dheyab A , Raoof SM, . (2021). Textile-Reinforced Mortar (TRM) Strengthened OneWay Reinforced Concrete Slabs. Tikrit Journal of Engineering Sciences, 28 (2), 107- 123.

References

[1] Tetta, Z. C., Koutas, L. N. & Bournas, D. A. 2015. Textile-reinforced mortar (TRM) versus fiberreinforced polymers (FRP) in shear strengthening of Amenah S. Dheyab, Saad M. Raoof / Tikrit Journal of Engineering Sciences (2021) 28(2): 107-123 122 concrete beams. Composites Part B: Engineering, 77, 338-348. [2] Triantafillou, T. & Papanicolaou, C. G. 2006. Shear strengthening of reinforced concrete members with textile reinforced mortar (TRM) jackets. Materials and structures, 39, 93-103. [3] Bournas, D. A., Lontou, P. V., Papanicolaou, C. G. & Triantafillou, T. C. 2007. Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns. ACI Structural Journal, 104 (6), 740-748. [4] Brameshuber, W. 2006a. Report 36: Textile Reinforced Concrete-State-of-the-Art Report of RILEM TC 201-TRC, RILEM publications.

[5] Carloni, C., Bournas, D. A., Carozzi, F. G., D’antino, T., Fava, G., Focacci, F., Giacomin, G., Mantegazza, G., Pellegrino, C. & Perinelli, C. 2016. Fiber reinforced composites with cementitious (inorganic) matrix. Design Procedures for the Use of Composites in Strengthening of Reinforced Concrete Structures. Springer. [6] S.M. Raoof, D.A. Bournas, Bond between TRM versus FRP composites and concrete at high temperatures, Compos. Eng. (2017). [7] Tetta, Z. C. & Bournas, D. A. 2016. TRM vs FRP jacketing in shear strengthening of concrete members subjected to high temperatures. Composites Part B: Engineering, 106, 190-205. [8] Triantafillou, T. & Papanicolaou, C. G. Textile reinforced mortars (TRM) versus fiber reinforced polymers (FRP) as strengthening materials of concrete structures. Proceedings of the 7th ACI International Symposium on Fibre-Reinforced (FRP) Polymer Reinforcement for Concrete Structures, 2005. American Concrete Institute, 99-118. [9] D’ambrisi, A. & Focacci, F. 2011. Flexural strengthening of RC beams with cement-based composites. Journal of Composites for Construction, 15, 707-720. [10] Elsanadedy, H. M., Almusallam, T. H., Alsayed, S. H. & Al-Salloum, Y. A. 2013. Flexural strengthening of RC beams using textile reinforced mortar–Experimental and numerical study. Composite Structures, 97, 40-55. [11] 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, 04014009. [12] Koutas, L., Bousias, S. & Triantafillou, T. 2014. Seismic strengthening of masonry-infilled RC frames with TRM: experimental study. Journal of Composites for Construction, 19 (2), 1-12. [13] Tzoura, E., and Triantafillou, T. C. (2014). “Shear strengthening of reinforced concrete T- beams under cyclic loading with TRM or FRP jackets.” Mater. Struct., doi: 10.1617/s11527-014-0470-9. [14] Bournas, D. A., Pavese, A., and Tizani, W. (2015). “Tensile capacity of FRP anchors in connecting FRP and TRM sheets to concrete.” Engin. Struct., 82(1), 72- 81. [15] Loreto, G., Babaeidarabad, S., Leardini, L., and Nanni, A. (2015). “RC beams shear- strengthened with fabric-reinforced-cementitious-matrix (FRCM) composite”. Int. J. Adv. Struct. Eng., 7(4):341-352. [16] Ombres, L., (2015). “Structural performances of reinforced concrete beams strengthened in shear with a cement based fiber composite material”. Compos. Struct., 122:316-329. Amenah S. Dheyab, Saad M. Raoof / Tikrit Journal of Engineering Sciences (2021) 28(2): 107-123 123 [17] 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. [18] Papanicolaou, C., Triantafillou, T., Papantoniou, I. & Balioukos, C. 2009. Strengthening of two-way reinforced concrete slabs with Textile Reinforced Mortars (TRM). [19] Koutas, L. N. & Bournas, D. A. 2016. Flexural strengthening of two-way RC slabs with textilereinforced mortar: experimental investigation and design equations. Journal of Composites for Construction, 21 (1), 1-11. [20] BSI 1983. Testing concrete: Method for determination of compressive strength of concrete. British Standard Institution, London, UK., BS 1881- 116. [21] ASTM A615/A615M-09, (2015) “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement”. [22] BS EN 1015-11: Methods of Test for Mortar for Masonry–Part 11. Determination of flexural and compressive strength of hardened mortar. London: British Standard Institution; 1999. [23] ACI Committee 440. Guide Test Methods for Fiber-Reinforced Polymers (FRPs) for Reinforcing or Strengthening Concrete Structures (ACI 440.3R-04). American Concrete Institute, Farmington Hills, USA, 2004, P40.

Tikrit Journal of Engineering Sciences (2021) 28(2) 107- 123.

Textile-Reinforced Mortar (TRM) Strengthened OneWay Reinforced Concrete Slabs

Amenah .. Dheyab *¹ Saad M.. Raoof ²

⁰Department of Civil Engineering/College of Engineering /Tikrit University/ Tikrit/ Iraq

* Corresponding author: ‫amenahsami@yahoo.com‬

DOI: http://doi.org/10.25130/tjes.28.2.09

Abstract

The issue of upgrading and strengthening the reinforced concrete (RC) infrastructure has become of great importance. Recently, textile-reinforced mortar (TRM) was used in the field of structural strengthening. In the current study, using of TRM for flexural retrofitting of one-way reinforced concrete (RC) slabs was experimentally and theoretically investigated. The parameters examined included; the number of TRM layers (1, 3, 5 layers) and the strengthening configuration fully and partially). For this purpose, eight specimens were prepared and tested under three points- loading up to failure. The result showed that the TRM increases substantially the flexural capacity of RC slabs. The highest flexural capacity increase recorded was 103 %. It was also noted that increasing the number of retrofitting layers resulted in different increases in the flexural capacity. It was also shown that the strengthening configuration plays an important role in the effectiveness of the technique. The fully covered approach showed higher loading capacity than the partial cover technique provided that the same TRM layer is applied. Finally, the ultimate moment of the strengthened specimens was calculated theoretically and compared with that obtained experimentally. The results of calculations showed a good agreement between the theoretical and experimental results.

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Keywords: [5] Carloni, C., Bournas, D. A., Carozzi, F. G., D’antino, T., Fava, G., Focacci, F., Giacomin, G., Mantegazza, G., Pellegrino, C. & Perinelli, C. 2016. Fiber reinforced composites with cementitious (inorganic) matrix. Design Procedures for the Use of Composites in Strengthening of Reinforced Concrete Structures. Springer. [6] S.M. Raoof, D.A. Bournas, Bond between TRM versus FRP composites and concrete at high temperatures, Compos. Eng. (2017). [7] Tetta, Z. C. & Bournas, D. A. 2016. TRM vs FRP jacketing in shear strengthening of concrete members subjected to high temperatures. Composites Part B: Engineering, 106, 190-205. [8] Triantafillou, T. & Papanicolaou, C. G. Textile reinforced mortars (TRM) versus fiber reinforced polymers (FRP) as strengthening materials of concrete structures. Proceedings of the 7th ACI International Symposium on Fibre-Reinforced (FRP) Polymer Reinforcement for Concrete Structures, 2005. American Concrete Institute, 99-118. [9] D’ambrisi, A. & Focacci, F. 2011. Flexural strengthening of RC beams with cement-based composites. Journal of Composites for Construction, 15, 707-720. [10] Elsanadedy, H. M., Almusallam, T. H., Alsayed, S. H. & Al-Salloum, Y. A. 2013. Flexural strengthening of RC beams using textile reinforced mortar–Experimental and numerical study. Composite Structures, 97, 40-55. [11] 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, 04014009. [12] Koutas, L., Bousias, S. & Triantafillou, T. 2014. Seismic strengthening of masonry-infilled RC frames with TRM: experimental study. Journal of Composites for Construction, 19 (2), 1-12. [13] Tzoura, E., and Triantafillou, T. C. (2014). “Shear strengthening of reinforced concrete T- beams under cyclic loading with TRM or FRP jackets.” Mater. Struct., doi: 10.1617/s11527-014-0470-9. [14] Bournas, D. A., Pavese, A., and Tizani, W. (2015). “Tensile capacity of FRP anchors in connecting FRP and TRM sheets to concrete.” Engin. Struct., 82(1), 72- 81. [15] Loreto, G., Babaeidarabad, S., Leardini, L., and Nanni, A. (2015). “RC beams shear- strengthened with fabric-reinforced-cementitious-matrix (FRCM) composite”. Int. J. Adv. Struct. Eng., 7(4):341-352. [16] Ombres, L., (2015). “Structural performances of reinforced concrete beams strengthened in shear with a cement based fiber composite material”. Compos. Struct., 122:316-329. Amenah S. Dheyab, Saad M. Raoof / Tikrit Journal of Engineering Sciences (2021) 28(2): 107-123 123 [17] 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. [18] Papanicolaou, C., Triantafillou, T., Papantoniou, I. & Balioukos, C. 2009. Strengthening of two-way reinforced concrete slabs with Textile Reinforced Mortars (TRM). [19] Koutas, L. N. & Bournas, D. A. 2016. Flexural strengthening of two-way RC slabs with textilereinforced mortar: experimental investigation and design equations. Journal of Composites for Construction, 21 (1), 1-11. [20] BSI 1983. Testing concrete: Method for determination of compressive strength of concrete. British Standard Institution, London, UK., BS 1881- 116. [21] ASTM A615/A615M-09, (2015) “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement”. [22] BS EN 1015-11: Methods of Test for Mortar for Masonry–Part 11. Determination of flexural and compressive strength of hardened mortar. London: British Standard Institution; 1999. [23] ACI Committee 440. Guide Test Methods for Fiber-Reinforced Polymers (FRPs) for Reinforcing or Strengthening Concrete Structures (ACI 440.3R-04). American Concrete Institute, Farmington Hills, USA, 2004, P40.

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