Constitutive model for ultra-high performance concrete (UHPC) considering the size effect under cyclic compressive loading

Zhang, Xiaochen; Lu, Yong; Wu, Xuesong; Wang, Puyan; Li, Ran; Liu, Yang; Shen, Chao; Zhang, Heming; Zhang, Dong

doi:10.1016/j.conbuildmat.2023.130499

Cited by 14 publications

(3 citation statements)

References 34 publications

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“…The specimens of the HM45 and HM36 models exhibited more obvious bending phenomena on their upper plates, while the failure modes of the HM18 model were less apparent compared to the other three models. By referencing the literature [17][18][19][20], we concluded that the reason for this was that large-sized UHPC specimens often have more internal pores and microcracks, with more initial defects compared to small-sized specimens, making them more susceptible to strength degradation. Therefore, the UHPC pre-stressed transfer devices of the HM45 and HM36 models were more prone to bending failures, and their cracks were also more prominent.…”

Section: Failure Process and Characteristicsmentioning

confidence: 99%

Experimental Study on and Finite Element Analysis of the Axial Compression Bearing Capacity of a UHPC Transfer Device for Pre-Stressed Anti-Floating Anchor Rods

Zhu,

Li,

Tang

et al. 2024

Buildings

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A new UHPC pre-stress transfer device is proposed for pre-stressed anti-floating anchor rods. To investigate the axial compression performance of the device during pre-stressing, physical experiments and a finite element verification were conducted on four different types of full-scale device specimens. The changes in the axial displacements and ultimate bearing capacities under axial pressure for the different types of devices were analyzed. The results indicated that bending failures occurred in the upper plate portions of all the types of specimens, with transverse cracks appearing near the upper plate portions of the short columns. The axial compression ultimate bearing capacity of each specimen exceeded the design value. Among them, the axial compression ultimate bearing capacity of the HM18 device increased the most relative to its design value by 87%, while axial compression ultimate bearing capacity of the HM45 device increased the least relative to its design value by only 2%. The new UHPC transfer device exhibits good applicability in pre-stressed anti-floating anchor rods.

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Section: Failure Process and Characteristicsmentioning

confidence: 99%

Experimental Study on and Finite Element Analysis of the Axial Compression Bearing Capacity of a UHPC Transfer Device for Pre-Stressed Anti-Floating Anchor Rods

Zhu,

Li,

Tang

et al. 2024

Buildings

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“…UHPC's compact microstructure offers superior resilience against environmental factors, and the embedded fibers in UHPFRC provide a robust defence against crack evolution, safeguarding the integrity of the connection. With their exceptional adhesion properties and the versatility, they bring to structural design, these advanced concretes not only ensure superior structural behavior but also promise cost-effectiveness over the long term, positioning them at the forefront of contemporary construction research and practice [14][15][16][17][18]. In the field of structural engineering, computational simulations have emerged as an indispensable tool.…”

Section: Introductionmentioning

confidence: 99%

Exploring strength and ductility responses of beam-column joints using UHPC and UHPFRC employing concrete damaged plasticity

Santos da Silveira,

Natã Zenatti,

de Miranda Saleme Gidrão

et al. 2024

Frattura Ed Integrità Strutturale

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Structures subjected to severe loads, such as earthquakes, often develop cracks at the beam-column joints, underscoring the significance of these regions in design. This study focuses on a comparative analysis of beam-column joints constructed with Ultra-High-Performance Concrete (UHPC) and Ultra-High-Performance Fiber-Reinforced Concrete (UHPFRC) using the Finite Element Method (FEM) within the Abaqus software, contrasting with Low-Strength Concrete (LSC) and Normal-Strength Concrete (NSC). The results underscore the superiority of UHPFRC in compressive and tensile strength, coupled with enhanced ductility. Furthermore, distinct failure mechanism are observed in the concretes, captured by concrete damaged plasticity (CDP), leading to a deeper understanding of the behavior of these high-strength materials. These findings carry significant implications for enhancing structural safety and performance, particularly in situations involving seismic or other severe loads.

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“…Mechanical properties of various fibres [3]. Fibre-reinforced UHPC, also known as ultra-high-performance fibre-reinforced concrete (UHPFRC), demonstrated exceptional performance under various loadings such as compressive [12][13][14], tensile [15][16][17], shear [18][19][20], flexural [21][22][23], torsional [24,25], fatigue [26,27], and seismic loadings [28,29], as well as in terms of durability [30,31], freeze-thaw [32,33], corrosive environments [34,35], cryogenic temperatures [36,37], elevated temperatures [38,39], fracture parameters [40,41], etc. UHPFRC can also be used for strengthening purposes [42,43] and repair applications [44,45].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Characterization of Non-Proprietary UHPFRC Beam—Parametric Analyses of Mechanical Properties

Osgouei,

Tafreshi,

Pourbaba

2023

Buildings

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Fabrication of ultra-high-performance concrete (UHPC) is costly, especially when commercial materials are used. Additionally, in contrast to conventional concrete, numerical procedures to simulate the behaviour of ultra-high-performance fibre-reinforced concrete (UHPFRC) are very limited. To contribute to the foregoing issues in this field, local materials were used in the fabrication process, while accounting for environmental issues and costs. Micro steel fibres (L: 13 mm, d: 0.16 mm, and ft: 2600 MPa; L: length, d: diameter, ft: tensile strength) were used in 2% volumetric ratios. Compression and indirect tests were carried out on cylindrical and prismatic beams according to international standards. To further enrich the research and contribute to the limited simulation data on UHPFRC, and better comprehension of the parameters, numerical analyses were performed using the ATENA software. Finally, nonlinear regression analyses were employed to capture the deflection-flexural response of the beams. The results were promising, indicating cost-effective fabrication using local materials that met the minimum requirements of UHFRC in terms of compressive strength. Furthermore, inverse analysis proved to be an easy and efficient method for capturing the flexural response of UHPFRC beams.

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Constitutive model for ultra-high performance concrete (UHPC) considering the size effect under cyclic compressive loading

Cited by 14 publications

References 34 publications

Experimental Study on and Finite Element Analysis of the Axial Compression Bearing Capacity of a UHPC Transfer Device for Pre-Stressed Anti-Floating Anchor Rods

Experimental Study on and Finite Element Analysis of the Axial Compression Bearing Capacity of a UHPC Transfer Device for Pre-Stressed Anti-Floating Anchor Rods

Exploring strength and ductility responses of beam-column joints using UHPC and UHPFRC employing concrete damaged plasticity

Experimental and Numerical Characterization of Non-Proprietary UHPFRC Beam—Parametric Analyses of Mechanical Properties

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