Bond-slip detection of concrete-encased composite structure using electro-mechanical impedance technique

Liang, Yabin; Li, Dongsheng; Parvasi, Seyed Mohammad; Kong, Qingzhao; Lim, Ing

doi:10.1088/0964-1726/25/9/095003

Cited by 74 publications

(47 citation statements)

References 21 publications

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“…On the other hand, to monitor the bond slip between the RC slab and the steel beam, the shear-type of small-size piezoceramic patches will be used. This work has been motivated by the reported research on the monitoring of bond-slip and debond between the reinforcement and concrete using piezoceramic transducers [67][68][69].…”

Section: Recommendations For Future Workmentioning

confidence: 99%

Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames

et al. 2019

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Tensile stresses and cracks in concrete slabs induced by a hogging moment have always been a disadvantage of steel-concrete composite structures and key issue of concern in the design of such structures. To reduce the tensile stress and control the crack width of the reinforced concrete (RC) slab, a new type of connector, called the uplift-restricted and slip-permitted (URSP) connector has been proposed and successfully applied in the area subjected to a negative bending moment in steel-concrete composite bridges. The feasibility of the URSP connector in steel-concrete composite frame buildings is investigated in this study based on a comprehensive parametric analysis. The effects of URSP connectors on the cracking behavior, as well as the stiffness and strength of composite frames, are systematically analyzed using an elaborate finite element model, which resembles a typical composite beam-column joint subjected to both lateral loads and vertical loads. In addition, an optimized arrangement length of URSP connectors is proposed for practical design. The research findings indicate that the application of URSP connectors greatly improves the crack resistance of RC slabs without an obvious reduction of the ultimate capacity and lateral stiffness of the composite frame. It is recommended that the distribution length of URSP connectors at each beam end should be 20–25% of the frame beam length.

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Section: Recommendations For Future Workmentioning

confidence: 99%

Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames

et al. 2019

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“…Structural health monitoring for concrete structures has attracted a lot of attention [3,4,5]. A wide variety of techniques have been reported in the literature that may be suitably employed for monitoring and locating corrosion nondestructively.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Concrete Deterioration Due to Reinforcement Corrosion by Integrating Acoustic Emission and FBG Strain Measurements

et al. 2017

Sensors

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129

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Corrosion of concrete reinforcement members has been recognized as a predominant structural deterioration mechanism for steel reinforced concrete structures. Many corrosion detection techniques have been developed for reinforced concrete structures, but a dependable one is more than desired. Acoustic emission technique and fiber optic sensing have emerged as new tools in the field of structural health monitoring. In this paper, we present the results of an experimental investigation on corrosion monitoring of a steel reinforced mortar block through combined acoustic emission and fiber Bragg grating strain measurement. Constant current was applied to the mortar block in order to induce accelerated corrosion. The monitoring process has two aspects: corrosion initiation and crack propagation. Propagation of cracks can be captured through corresponding acoustic emission whereas the mortar expansion due to the generation of corrosion products will be monitored by fiber Bragg grating strain sensors. The results demonstrate that the acoustic emission sources comes from three different types, namely, evolution of hydrogen bubbles, generation of corrosion products and crack propagation. Their corresponding properties are also discussed. The results also show a good correlation between acoustic emission activity and expansive strain measured on the specimen surface.

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“…Most of the earlier investigations are related to conventional damage detection and include artificial crack, 20,21 composite delamination, 22 adhesive crack, 23 metal corrosion, 24 concrete crack, 25 and bond-slip 26 that involve various structures such as the truss structure, 17 wind turbine blade, 27 railroad track, 28 aluminum beam/plate, 20 pipe, 29,30 rotating machines, 31 and concrete-encased composite structure. 26 The changes in structural states can be also detected through EMI-based methods such as cable force, 32 concrete strength, [33][34][35][36][37] bolt pre-load, 38 thermal stress, 39 concrete hydration, 40,41 and axial stress. 42 The most common state metrics in EMI-based methods are statistical values based on frequency-by-frequency comparisons 17 such as root mean square deviation (RMSD), mean absolute percentage deviation (MAPD), and correlation coefficient (CC) where the frequency response curve at initial condition is considered as the baseline.…”

Section: Introductionmentioning

confidence: 99%

Electromechanical impedance‐based ice detection of stay cables with temperature compensation

Zhang

Zhou

2019

Struct Control Health Monit

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Summary Ice accretion on stay cables is a critical problem for cable‐stayed bridges in a cold climate. Timely and reliable ice detection is a primary and necessary measure for all types of de‐icing solutions. In the study, electromechanical impedance (EMI) method is first proposed to detect ice accretion on the stay cables. This method is extremely sensitive to the small changes in local mass, local stiffness, and temperature, and all of the aforementioned are involved in the icing process on stay cables. With respect to ice detection by using the EMI method, the changes in structural stiffness and mass due to the ice covered are considered as primary characteristics, whereas the change in temperature corresponds to the disturbing factor. Thus, temperature compensation should be implemented during the post processing of experimental data. The proposed method is demonstrated by experiments on a segment of a full‐scale stay cable and with necessary signal processing. The icing process is simulated by spraying water in a low temperature laboratory. The root mean square deviation, relative root mean square deviation, and the characteristic bandwidth are used to quantitatively evaluate the ice accretion. Subsequently, more accurate ice thickness identification is implemented through a trained artificial neural network model. Results indicate that the proposed EMI method with temperature compensation is rapid and feasible for the ice detection of stay cables.

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Bond-slip detection of concrete-encased composite structure using electro-mechanical impedance technique

Cited by 74 publications

References 21 publications

Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames

Research on Application of Uplift-Restricted Slip-Permitted (URSP) Connectors in Steel-Concrete Composite Frames

Monitoring Concrete Deterioration Due to Reinforcement Corrosion by Integrating Acoustic Emission and FBG Strain Measurements

Electromechanical impedance‐based ice detection of stay cables with temperature compensation

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