RESEARCH STATUS QUO OF INTERFACIAL BONDING PROPERTIES OFMASONRY STRUCTURES REINFORCED BY FRP BARS

Abstract

Abstract: Near-surface mounted (NSM) reinforcement is the common methods for reinforced masonry structure by FRP tendons. The debonding failure of FRP tendons as the primary failure mode, and the research on the bonding performance and debonding mechanism between FRP bars and masonry become the key to this reinforcement technology. In this paper, the progress of pull test, interface shear test, bending test and numerical simulation of domestic and foreign scholars are reviewed. The interfacial bonding properties of NSM-FRP reinforced masonry structures are studied. The results reveal that the deformation capacity, energy dissipation and ductility of masonry are significantly increased after strengthened by NSM-FRP bars. Increasing the embedding depth of FRP bars can effectively improve the debonding load. Finally, the relevant formulas of the various bonding parameters are checked by using the collected experimental data, and some suggestions are put forward for the future research.

Key words: NSM, FRP bars, masonry structure, interfacial bonding properties

CLC Number:

TB332

WANG Zuo-hu, LIU Du, YANG Wen-xiong. RESEARCH STATUS QUO OF INTERFACIAL BONDING PROPERTIES OFMASONRY STRUCTURES REINFORCED BY FRP BARS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(5): 102-108.

References

[1] Moon F L. Seismic strengthening of low-rise unreinforced masonry structures with flexible diaphragms[R]. Georgia Institute of Technology, 2004.
[2] Prota A, Manfredi G, Nardone F. Assessment of design formulas for in-plane FRP strengthening of masonry walls[J]. Journal of Composites for Construction, 2008, 12(6): 643-649.
[3] Willis C R, Yang Q, Seracino R, et al. Damaged masonry walls in two-way bending retrofitted with vertical FRP strips[J]. Construction & Building Materials, 2009, 23(4): 1591-1604.
[4] Xia S, Oehlers D. Debonding mechanisms in FRP plated unreinforced masonry under out-of-plane loading[J]. Advances in Structural Engineering, 2006, 9(5): 619-637.
[5] Petersen R B, Masia M J, Seracino R. Bond behavior of near-surface mounted FRP strips bonded to modern clay brick masonry prisms: influence of strip orientation and compression perpendicular to the strip[J]. Journal of Composites for Construction, 2009, 13(3): 169-178.
[6] Kashyap J, Willis C R, Griffith M C, et al. Debonding resistance of FRP-to-clay brick masonry joints[J]. Engineering Structures, 2012, 41(3): 186-198.
[7] Dizhur D, Griffith M C, Ingham J M. Pullout strength of NSM CFRP strips bonded to vintage clay brick masonry[J]. Engineering Structures, 2014, 69(9): 25-36.
[8] Willis C R, Yang Q, Seracino R, et al. Bond behaviour of FRP-to-clay brick masonry joints[J]. Steel Construction, 2009, 31(11): 2580-2587.
[9] Mahmood H, Ingham J M. Diagonal compression testing of FRP-retrofitted unreinforced clay brick masonry wallettes[J]. Journal of Composites for Construction, 2011, 15(5): 810-820.
[10] Petersen R B, Masia M J, Seracino R. In-plane shear behavior of masonry panels strengthened with NSM CFRP strips: experimental investigation[J]. Journal of Composites for Construction, 2010, 14(6): 754-763.
[11] Dizhur D, Griffith M, Ingham J. In-plane shear improvement of un-reinforced masonry wall panels using NSM CFRP strips[J]. Journal of Composites for Construction, 2013, 17(6).
[12] Konthesingha K M C, Masia M J, Petersen R B, et al. Static cyclic in-plane shear response of damaged masonry walls retrofitted with NSM FRP strips-An experimental evaluation[J]. Engineering Structures, 2013, 50(50): 126-136.
[13] Konthesingha K M C, Masia M J, Petersen R B, et al. Experimental evaluation of static cyclic in-plane shear behavior of unreinforced masonry walls strengthened with NSM FRP strips[J]. Journal of Composites for Construction, 2014, 19(3).
[14] Konthesingha K M C, Masia M J, Petersen R B, et al. Bond behaviour of NSM FRP strips to modern clay brick masonry prisms under cyclic loading[J]. Canadian Masonry Symposium, 2009, 11: 169-178.
[15] Carloni C, Subramaniam K V. Investigation of the interface fracture during debonding between FRP and masonry[J]. Advance in structural engineering, 2009, 12(5): 731-743.
[16] Faella C, Camorani G, Martinelli E, et al. Bond behaviour of FRP strips glued on masonry: experimental investigation and empirical formulation[J]. Construction and Building Materials,2012, 31: 353-363.
[17] Griffith M C, Kashyap J, Ali M S M. Flexural displacement response of NSM FRP retrofitted masonry walls[J]. Construction & Building Materials, 2012, 49(6): 1032-1040.
[18] Mierzejewski W. Out-of-plane bending of masonry walls with near-surface-mounted and externally-bonded corrosion-resistant reinforcement[R]. 2010.
[19] Willis C R, Seracino R, Griffith M C. Out-of-plane strength of brick masonry retrofitted with horizontal NSM CFRP strips[J]. Engineer-ing Structures, 2010, 32(2): 547-555.
[20] 刘界鑫. 嵌入式FRP筋与混凝土界面的粘结性能试验研究[D]. 青岛: 中国海洋大学, 2015.
[21] Ghiassi B, Marcari G, Oliveira D V, et al. Numerical analysis of bond behavior between masonry bricks and composite materials[J]. Engineering Structures, 2012, 43(10): 210-220.
[22] Su Y, Wu C, Griffth M C. Modelling of the bond-slip behavior in FRP reinforced masonry[J]. Construction & Building Materials, 2011, 25(1): 328-334.
[23] Petersen R B, Masia M J, Seracino R. In-plane shear behavior of masonry panels strengthened with NSM CFRP strips. Ⅱ: finite-element model[J]. Journal of Composites for Construction, 2010, 14(6): 764-774.
[24] Ghiassi B, Marcari G, Oliveira D V, et al. Numerical analysis of bond behavior between masonry bricks and composite materials[J]. Engineering structures, 2012, 43(6): 210-220.
[25] Ghiassi B, Oliveira D V, Lourenco P B, et al. Numerical study of the role of mortar joints in the bond behavior of FRP-strengthened masonry[J]. Composites part B: engineering, 2013, 46(11): 21-30.
[26] Ceroni F, Felice G D, Grand E, et al. Analytical and numerical modeling of composites-to-brick bond[J]. Materials and structures, 2014, 47(12): 1987-2003.
[27] Ceroni F, Garofano A, Pecce M. Modelling of the bond behavior of tuff elements externally bonded with FRP sheets[J]. Composites part B: engineering, 2014, 59: 248-259.
[28] Ceroni F, Ferracuti B, Pecce M, et al. Assessment of a bond strength model for FRP reinforcement externally bonded over masonry blocks[J]. Composites part B: engineering, 2014, 59: 147-161.
[29] Maruccio C, Basilio I, Oliveira D V, et al. Numerical modelling and parametric analysis of bond strength of masonry members retrofitted with FRP[J]. Construction and building materials, 2014, 73: 713-727.
[30] Focacci F, Carloni C. A study of the fracture process at the FRP-masonry interface: the role of the periodic pattern of bricks and mortar joints[J]. Key Engineering Materials, 2015, 624: 611-618.
[31] Focacci F, Carloni C. Periodic variation of the transferable load at the FRP-masonry interface[J]. Composite structures, 2015, 129: 90-100.
[32] Carloni C, Focacci F. FRP-masonry interfacial debonding: an energy balance approach to determine the influence of the mortar joints[J]. European journal of mechanics-A/Solids, 2016, 55: 122-133.
[33] 王全凤, 薛婷怡, 黄奕辉,等. FRP-砖界面粘结-滑移计算模型[J]. 工程力学, 2010, 27(12):130-134.
[34] 黄田良, 黄奕辉. 纤维增强材料与粘土砖有效粘结长度分析[J]. 四川建筑科学研究, 2015, 41(2):195-198.
[35] Seracino R, Saifulnaz M R R, Oehlers D J. Generic debonding resistance of EB and NSM plate-to-concrete joints[J]. Journal of Composites for Construction, 2007, 11(1): 62-70.
[36] Turco V, Galati N, Lorenzis L D, et al. Bond between near-surface-mounted FRP rods and masonry in structural strengthening[J]. Advancing with composites, 2003, 99(2): 209-217.