Materiales de Construcción, Vol 69, No 335 (2019)

Compression performance and bearing capacity calculation model of small-eccentricity columns strengthened with textile-reinforced mortar (TRM)

S. P. Yin
State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology, China

X. Q. Hu
State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology, China

Y. T. Hua
State Key Laboratory for Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology, Spain


To study the compression performance of TRM-strengthened columns with small eccentricities, a total of 9 reinforced concrete (RC) columns with end corbels were subjected to compression testing. The test parameters are as follows: the number of textile layers, the ratio of longitudinal reinforcement, and polyvinyl alcohol (PVA) short-cut fiber volume fraction. The experimental results indicated that, compared to the control, columns with three layers of textile exhibited an approximately 10.66% increase in the bearing capacity. However, the effect increased only slightly when the number of textile layers increased to 4. Besides, the effect was improved with the increase in the ratio of longitudinal reinforcement and PVA fiber volume fraction. Finally, based on laboratory tests and related research results, a model for calculating normal section bearing capacity of TRM-strengthened columns with small eccentricities was presented. A comparison of the theoretical and experimental data demonstrated the applicability of the proposed model.


Composite; Fiber reinforcement; Mechanical properties; Modelization

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Bournas, D.A.; Pavese, A.; Tizani, W. (2015) Tensile capacity of FRP anchors in connecting FRP and TRM sheets to concrete. Eng. Struct. 82, 72-81.

Bisby, L.; Ranger, M. (2010) Axial-flexural interaction in circular FRP-confined reinforced concrete columns. Constr. Build. Mater. 24 [9], 1672-1681.

Ombres, L.; Verre, S. (2015) Structural behaviour of fabric reinforced cementitious matrix (FRCM) strengthened concrete columns under eccentric loading. Compos. Pt. B-Eng. 75, 235-249.

Xu, S.L.; Li, H. (2007) Bond Properties and Experimental Methods of Textile Reinforced Concrete. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 22 [3], 529-532.

Mechtcherine, V. (2013) Novel cement-based composites for the strengthening and repair of concrete structures. Constr. Build. Mater. 41, 365-373.

Papanicolaou, C.G.; Triantafillou, T.C.; Karlos, K.; Papathanasiou, M. (2007) Textile-reinforced mortar (TRM) versus FRP as strengthening material of URM walls: In-plane cyclic loading. Mater. Struct. 40 [10], 1081-1097.

Trapko, T. (2014) Behaviour of fibre reinforced cementitious matrix strengthened concrete columns under eccentric compression loading. Mater. Des. 54 [2], 947-954.

Sheng, J.; Yin, S.P.; Wang, F. (2017) Experimental study on the fatigue behaviour of RC beams strengthened with TRC after sustained load corrosion. Constr. Build. Mater. 131, 713-720.

Elsanadedy, H.M.; Almusallam, T.H.; Alsayed, S.H.; Alsalloum, Y.A. (2013) Flexural strengthening of RC beams using textile reinforced mortar-Experimental and numerical study. Compos. Struct. 97 [2], 40-55.

Larbi, A.S.; Agbossou, A.; Hamelin, P. (2013) Experimental and numerical investigations about textile-reinforced concrete and hybrid solutions for repairing and/or strengthening reinforced concrete beams. Compos. Struct. 99, 152-162.

Schladitz, F.; Frenzel, M.; Ehlig, D.; Curbach, M. (2012) Bending load capacity of reinforced concrete slabs strengthened with textile reinforced concrete. Eng. Struct. 40, 317-326.

Triantafillou, T.C.; Papanicolaou, C.G.; Zissimopoulos, P.; Laourdekis, T. (2006) Concrete confinement with textilereinforced mortar jackets. ACI Struct. J. 103 [1], 28-37.

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 Struct. J. 104 [6], 740-748.

Trapko, T. (2013) Stress-strain model for FRCM confined concrete elements. Compos. Pt. B-Eng. 45 [1], 1351-1359.

Yin, S.P.; Xu, S.L.; Wang, F. (2015) Investigation on the flexural behavior of concrete members reinforced with epoxy resin-impregnated textiles. Mater. Struct. 48 [1-2], 153-166.

Yin, S.P.; Peng, C.; Jin, Z.Y. (2017) Research on mechanical properties of axial-compressive concrete columns strengthened with TRC under a conventional and chloride wet-dry cycle environment. J. Compos. Constr. 21 [1], 04016061.

Xu, S.L.; Li, Q.H.; Li, H.D. (2008) An experimental study on the flexural properties of carbon textile reinforced ECC. Chin. Civil. Eng. J. 40 [12], 69-76.

American Concrete Institute. (2013) Guide to design and construction of externally bonded fabric Reinforced Cementitious Matrix (FRCM) systems for repair and strengthening concrete and masonry structures. ACI 549.4R-13, ACI Committee 549. Farmington Hills, MI.

Trapko, T. (2014) Confined concrete elements with PBOFRCM composites. Constr. Build. Mater. 73, 332-338.

Teng, J.G.; Huang, Y.L.; Lam, L.; Ye, L.P. (2007) Theoretical Model for Fiber-Reinforced Polymer-Confined Concrete. J. Compos. Constr. 11 [2], 201-210.

Pan, Y.; Cao, S.Y.; Jing, D.H.; Chen, D.B. (2009) Test and analysis of the axial stress-strain relationship of square section concrete columns confined by CFRP under preload. Chin. Civil. Eng. J. 42 [1], 23-29.

Pan, Y.; Guo, R.; Li, H.G.; Tang, H.Y.; Huang, J.X. (2017) Analysis-oriented stress-strain model for FRP-confined concrete with preload. Compos. Struct. 166 [3], 57-67.

Yin S.P.; Xu, S.L.; Lv H.L. (2014) Flexural Behavior of Reinforced Concrete Beams with TRC Tension Zone Cover. J. Mater. Civ. Eng. 26 [2], 320-330.

Trapko, T. (2014) Effect of eccentric compression loading on the strains of FRCM confined concrete columns. Constr. Build. Mater. 61, 97-105.

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