Experimental and analytical investigation on bond-slip behaviour of deformed bars embedded in engineered cementitious composites

Lee, Siong Wee; Kang, Shao‐Bo; Tan, Kang Hai; Yang, En-Hua

doi:10.1016/j.conbuildmat.2016.10.036

Cited by 102 publications

(27 citation statements)

References 10 publications

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“…Cosenza et al proposed an improved BPE model which can depict the bond slip curve of FRP bars in concrete [ 70 ], and the improved BPE model is more suitable to describe the bond slip occurring between FRP materials and the concrete. The improved model is verified by many experiments reported in [ 71 , 72 ]. In the research, we find that the experimental results show the same trend as the theoretical ones based on the improved BPE model ( Figure 7 ).…”

Section: Test Setup and Proceduressupporting

confidence: 70%

Real-Time Monitoring of Bond Slip between GFRP Bar and Concrete Structure Using Piezoceramic Transducer-Enabled Active Sensing

Ren

Deng

et al. 2018

Sensors

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Glass fiber-reinforced polymers (GFRPs) have received increasing attention in recent years due to their overall performance of light weight, low cost and corrosion resistance, and they are increasingly used as reinforcement in concrete structures. However, GFRP material has low elastic modulus and linear elastic properties compared with steel bars, which introduces different bonding characteristics between bars and concrete. Therefore, a reliable monitoring method is urgently needed to detect the bond slip in GFRP-reinforced concrete structures. In this paper, a piezoceramic-based active sensing approach is proposed and developed to find the debonding between a GFRP bar and the concrete structure. In the proposed method, we utilize PZT (lead zirconate titanate) as two transducers. One acts as an actuator which is buried in the concrete structure, and the other acts as a sensor which is attached to the GFRP bar by taking advantage of machinability of the GRRP material. Both transducers are strategically placed to face each other across from the interface between the GFRP bar and the concrete. The actuator provokes a stress wave that travels through the interface. Meanwhile, the PZT patch that is attached to the GFRP bar is used to detect the propagating stress wave. The bonding condition determines how difficult it is for the stress wave traveling through the interface. The occurrence of a bond slip leads to cracks between the bar and the concrete, which dramatically reduces the energy carried by the stress wave through the interface. In this research, two specimens equipped with the PZT transducers are fabricated, and pull-out tests are conducted. To analyze the active sensing data, we use wavelet packet analysis to compute the energy transferred to the sensing PZT patch throughout the process of debonding. Experimental results illustrate that the proposed method can accurately capture the bond slip between the GFRP bar and the concrete.

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Section: Test Setup and Proceduressupporting

confidence: 70%

Real-Time Monitoring of Bond Slip between GFRP Bar and Concrete Structure Using Piezoceramic Transducer-Enabled Active Sensing

Ren

Deng

et al. 2018

Sensors

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“…Therefore, this study assumed that it could be used to enhance the strength, stiffness and ductility of concrete-encased steel beam. Several researchers have investigated the bond behavior between reinforcing bars and fiber reinforced cementitious composites [6,7,8,9]. Lee et al [8] found that steel reinforcement in ECC could develop significantly higher bond strength than that in concrete.…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers have investigated the bond behavior between reinforcing bars and fiber reinforced cementitious composites [6,7,8,9]. Lee et al [8] found that steel reinforcement in ECC could develop significantly higher bond strength than that in concrete. Mohammed et al [10] and Hossain et al [11] investigated the shear bond characteristics of composite slabs with profiled steel deck and ECC.…”

Section: Introductionmentioning

confidence: 99%

08.50: A study on the bond stress‐slip behavior between engineered cementitious composites and structural steel sections

2017

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The performance of traditional steel-concrete composite beams, which are commonly used in many building floor systems, could be further enhanced by introducing Engineered Cementitious Composites (ECC) as an additional composite component. The performance of such ECC-concrete-steel composite beams under high shear loading conditions will be significantly affected by the bond-slip behavior between ECC and structural steel section. When studying the bond slip behavior between ECC and structural steel, simple push test is an inexpensive and convenient method to investigate the complex interaction between ECC and steel. Such push test study is an important step toward understanding the bond behavior and evaluating the performance of these types of beams. In this context, this paper presents results from twelve specially designed push tests that aim to determine the bond characteristics between ECC and structural steel strips. The results of this study present the bond stress-slip behavior and failure modes under different cover thickness of ECC and the bond length specimens.

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“…An important assumption in Farmer's model is that the bond stress is proportional to the relative bond slip. Li and Stillborg (1999) Some experiments to test the bond behaviour at reinforced bar and concrete are also reviewed to verify the model as shown in Figure 2-5 (Ko et al, 2014;Lee et al, 2016;Mertoğlu et al, 2016;Mousavi et al, 2017). According to the experimental results, a trilinear bond-slip model is proposed and widely used in recent year (Benmokrane et al, Chapter 2 Literature review 13 1995; Moosavi et al, 2005;Ren et al, 2010;Blanco Martí n et al, 2011;Deb and Das, 2011;Ma et al, 2013;Ma et al, 2014;Zhandarov and Mä der, 2016).…”

Section: Installation Processesmentioning

confidence: 99%

Reinforcement mechanism of rockbolt system for underground excavation

Nie¹

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Experimental and analytical investigation on bond-slip behaviour of deformed bars embedded in engineered cementitious composites

Cited by 102 publications

References 10 publications

Real-Time Monitoring of Bond Slip between GFRP Bar and Concrete Structure Using Piezoceramic Transducer-Enabled Active Sensing

Real-Time Monitoring of Bond Slip between GFRP Bar and Concrete Structure Using Piezoceramic Transducer-Enabled Active Sensing

08.50: A study on the bond stress‐slip behavior between engineered cementitious composites and structural steel sections

Reinforcement mechanism of rockbolt system for underground excavation

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