Numerical simulation of self-consolidating engineered cementitious composite flow with the V-funnel and U-box

Thanh, Hai Tran; Liu, Haotian; Zhang, Y.X.

doi:10.1016/j.conbuildmat.2019.117467

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…Li et al (Li et al, 2022) analyzed the influence of axial compression ratio of different ECC frame joints with the modelling of ECC material. Thanh et al (Thanh et al, 2020) developed a 3D numerical model for ECC’s flow behavior. Gencturk et al (Gencturk, 2011; Gencturk and Elnashai, 2013) proposed a cyclic constitutive model for ECC and tested compared with RC column under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis in seismic performance of post-earthquake reinforced concrete frame retrofitted with ECC

Ren,

Zhang,

Mao

et al. 2023

Advances in Structural Engineering

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In order to further demonstrate the effectiveness of engineered cementitious composites (ECC) in repairing and strengthening the post-earthquake damaged structure, at the overall structural level, experimental and numerical comparative analysis of structural seismic performance before and after “retrofitted with ECC” is conducted in this paper. A 1:2-scale reinforced concrete frame is tested under cyclic reversed loading and a new ECC material’s constitutive model is proposed in this paper for improving the accuracy and feasibility of numerical modelling. The modelling method and newly proposed constitutive model of ECC has been demonstrated to be workable and accurate. Based on numerical and experimental data, the increase of the average yielding displacement after the installation of ECC is relatively significant (80.4% to 156.4%), and the repairing method using ECC in post-earthquake damaged RC frame can restore and even exceed the original frame’s load bearing capacity. Comparing the ultimate inter-story drift ratio, the ratio with ECC is about 31.0% higher, indicating that ECC has good deformation capacity and the usage of ECC is indeed an effective method to improve deformation capacity in repairing and strengthening post-earthquake damaged structures. The results confirm the effectiveness and superiority of retrofitting ECC in post-earthquake damaged structures for the reason that the repaired structure can reach the same level of seismic performance as the original structure. The “repairable” characteristic can be used in the design of earthquake resilient structures.

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis in seismic performance of post-earthquake reinforced concrete frame retrofitted with ECC

Ren,

Zhang,

Mao

et al. 2023

Advances in Structural Engineering

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“…In these models, fibers are typically simulated either as rigid bodies represented by two-end particles for steel fibers [19,21] or as bendable bodies represented by interconnected particles for synthetic fibers [20]. The computational domains of fresh mixes are discretized into sets of particles, then approximately solved using Lattice Boltzmann [22] or Smoothed Particle Hydrodynamics (SPH) [17,20] methods. The introduction of fibers into concrete mixes increases the viscosity of fresh concrete.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC

Van

Thanh

Nguyen

et al. 2022

Front. Struct. Civ. Eng.

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Engineered cementitious composites (ECC), also known as bendable concrete, were developed based on engineering the interactions between fibers and cementitious matrix. The orientation of fibers, in this regard, is one of the major factors influencing the ductile behavior of this material. In this study, fiber orientation distributions in ECC beams influenced by different casting techniques are evaluated via numerical modeling of the casting process. Two casting directions and two casting positions of the funnel outlet with beam specimens are modeled using a particle-based smoothed particle hydrodynamics (SPH) method. In this SPH approach, fresh mortar and fiber are discretized by separated mortar and fiber particles, which smoothly interact in the computational domain of SPH. The movement of fiber particles is monitored during the casting simulation. Then, the fiber orientations at different sections of specimens are determined after the fresh ECC stops flowing in the formwork. The simulation results show a significant impact of the casting direction on fiber orientation distributions along the longitudinal wall of beams, which eventually influence the flexural strength of beams. In addition, casting positions show negligible influences on the orientation distribution of fibers in the short ECC beam, except under the pouring position.

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“…The demand for ECC composites for different technical and operational conditions led to the development of different matrices with special fresh and hardened attributes. Selfcompacting (SC) [50], high-early-strength (HES) [51], self-healing (SH) [52], green (G) [53], and lightweight (LW) [54] engineered cementitious composites are the most widely studied ECC composites in the literature. Lightweight ECC is defined as cementitious composites made with a variety of low-density ingredients including entrained air, shale, hollow glass bubbles, and polymeric beads [55].…”

Section: Introductionmentioning

confidence: 99%

Temperature Impact on Engineered Cementitious Composite Containing Basalt Fibers

et al. 2021

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Engineered cementitious composite (ECC) is a new generation of fiber-reinforced concrete with high ductility and exceptional crack control capabilities. However, ECC can suffer a substantial reduction in ductility when exposed to elevated temperatures resulting in a loss of crack-bridging ability. In this study, the effect of adding basalt fiber (BF), which is an inorganic fiber with high-temperature resistance for the production of ECC, was studied. Moreover, the change in the mechanical properties of ECC, including compressive, tensile, and flexural strength, was experimentally investigated under elevated temperatures up to 400 °C. The results showed that the addition of BF to reinforced ECC improved the tensile and flexural strength of concrete effectively, but compressive strength marginally decreased. A significant decrease was observed in the range from 300 to 400 °C, while it increased smoothly when heated up to 300 °C. The compressive and flexural strength diminished after a slight strain gained when heated up to 100 °C. This work paves the way for future investigations focusing on the development of high-temperature resistance ECC.

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Numerical simulation of self-consolidating engineered cementitious composite flow with the V-funnel and U-box

Cited by 10 publications

References 23 publications

Numerical and experimental analysis in seismic performance of post-earthquake reinforced concrete frame retrofitted with ECC

Numerical and experimental analysis in seismic performance of post-earthquake reinforced concrete frame retrofitted with ECC

Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC

Temperature Impact on Engineered Cementitious Composite Containing Basalt Fibers

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