Seismic behavior of reinforced engineered cementitious composite members and reinforced concrete/engineered cementitious composite members: A review

Hou, Lei; Xu, Ran; Chen, Da; Xu, Sheng; Aslani, Farhad

doi:10.1002/suco.201800269

Cited by 19 publications

(18 citation statements)

References 52 publications

(187 reference statements)

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“…Among these, low cost concrete with superior durability and mechanical properties has been widely used in various buildings, bridges, and civil infrastructure 4–6 . Concrete structures are inevitably subject to dynamic loadings, such as wind, earthquakes, and bursts, that cause damage during their life spans 7,8 . Damping is an essential parameter that determines the dynamic responses of concrete structures, and therefore determines the degree of damage after extreme events 9,10 .…”

Section: Introductionmentioning

confidence: 99%

Relationship between internal viscous damping and stiffness of concrete material and structure

Liang

Wang

et al. 2021

Structural Concrete

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This study focuses on the relationship between the internal viscous damping and the stiffness of concrete material and structure having small deformation amplitude. New damping parameters were proposed to describe the energy dissipation capacity and the vibration–amplitude attenuation rate. An improved damping suspension test method for predicting the essential material parameters, elasticity modulus and loss modulus, was developed and validated. The results show that the viscous damping energy dissipation capacity of concrete material and structure having small deformation amplitude is proportional to the product of the loss factor and the stiffness, and the vibration‐amplitude attenuation rate is proportional to the product of the damping ratio and the natural frequency. The variation in dimensionless damping mainly results from the change in the stiffness of concrete material and structure. The porosity shows the smallest elasticity modulus and the largest energy dissipation capacity of nano‐phase in cement paste under constant loading conditions. The improved damping suspension test method is proposed based on theoretical analysis and is validated using an experiment and finite element analysis.

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Section: Introductionmentioning

confidence: 99%

Relationship between internal viscous damping and stiffness of concrete material and structure

Liang

Wang

et al. 2021

Structural Concrete

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“…The self-centering ratio was used to evaluate the self-centering performance. The self-centering ratio u is calculated as Equation (1).…”

Section: Influence Factors Of Self-centering Performancementioning

confidence: 99%

“…It can provide high ductility, large deformation, high energy dissipation and good durability for engineering structures. Therefore, it is very suitable for seismic structures [1]. However, the high ductility and energy dissipation of ECC is at the cost of significant residual deformation and a large number of crack damage, which is still not conducive to the post-earthquake repair and functional recovery of the structures [2].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Self-Centering Performance of the SMA Fiber Reinforced ECC Composite Beam

Yang

Deng

et al. 2022

Materials

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The combination of superelastic shape memory alloy fibers and ECC materials can form a new SMA fiber reinforced ECC composite material (SMAF-ECC) with good self-centering performance. In order to study the self-centering performance of the new composite material, 6 groups of pre-notch beam specimens were made for three-point bending cyclic loading tests, and the failure phenomenon, hysteresis curve, self-centering effect and influencing factors of the specimens were analyzed. The research results show that when the SMA fibers are effectively anchored in the ECC matrix, the SMA fibers can exert the superelastic properties to provide the ECC beams with recoverying force, and realize the crack self-closure and deflection self-recovery function for the beams, with the minimum residual crack width and deflection is only 0.9 mm and 1.3 mm respectively. Increasing fiber content can cause a small increase in the self-centering ability of the beams. However, only when the fiber diameter is appropriate, better self-centering effect can be achieved, but the difference caused by fiber diameter in the test was only 5%. SMA Fiber end forms have significant influence on self-centering performance. The knotted end beam can get a more than 70% self-centering ratio, while the straight end beams and bended end beams have no self-centering ability. The research results provide important reference for the research and application of this new self-centering materials and their structures.

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“…ECC shows high tensile ductility based on multiple micro-cracks by incorporating synthetic fibers below 2 vol.%; the micromechanics and steady-state cracking theory are adopted for its material selection and mixture design [3][4][5][6]. Many researchers have tried to utilize this material in structural members and retrofitting [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effects of the Replacement Length of Concrete with ECC on the Cyclic Behavior of Reinforced Concrete Columns

Hyun

Bang²,

Lee

et al. 2021

Materials

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This paper presents an experimental investigation on the effects of the replacement length of concrete with engineered cementitious composites (ECC) on the cyclic behavior of a reinforced concrete (RC) column. A conventional RC column specimen and two RC composite columns designed with ECC were fabricated. To investigate the cyclic behavior of each specimen, a series of cyclic loading tests was performed under a reversed cyclic loading condition with a constant axial load. Test results showed that ECC columns exhibited higher cyclic behavior in terms of load carrying capacity, ductility, and energy dissipation capacity compared to the RC column. It was also found that when applying ECC to the column specimen with a length of 3.6d or more, the energy dissipation capacity was greatly increased.

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Seismic behavior of reinforced engineered cementitious composite members and reinforced concrete/engineered cementitious composite members: A review

Cited by 19 publications

References 52 publications

Relationship between internal viscous damping and stiffness of concrete material and structure

Relationship between internal viscous damping and stiffness of concrete material and structure

Experimental Study on Self-Centering Performance of the SMA Fiber Reinforced ECC Composite Beam

Effects of the Replacement Length of Concrete with ECC on the Cyclic Behavior of Reinforced Concrete Columns

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