Study of the scale effect on diagonal crack propagation in concrete beams

Słowik, Marta; Smarzewski, Piotr

doi:10.1016/j.commatsci.2012.05.068

Cited by 27 publications

(13 citation statements)

References 4 publications

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“…For this reason, the higher compressive strains ε 0 = 0.006 at f c and ε u = 0.012 at 0.8f c are adopted in the HPC model. This compressive stress-strain relation was applied to help obtain convergence of the nonlinear solution [50][51][52]. In the stages of concrete cracking or crushing, the stiffness matrix is adapted to the failure mode.…”

Section: Materials Propertiesmentioning

confidence: 99%

Processes of Cracking and Crushing in Hybrid Fibre Reinforced High-Performance Concrete Slabs

Smarzewski

2019

Processes

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This paper presents the experimental results obtained with the non-contact three-dimensional deformation measuring system–ARAMIS and finite element analysis performed using ANSYS of three slabs made of high-performance concrete (HPC) and hybrid (steel/ST and polypropylene/PP) fibre reinforced high-performance concrete (FRHPC). The research was performed on reinforced concrete (RC) slabs with a web mesh of ϕ8 mm bars. All the slabs had an identical amount of steel bars and differed by the fibre volume content. The main objective of the research was to determine the impact of adding polypropylene and steel fibres on the carrying capacity and ductility of HPC slabs. Analysis of the results was conducted based on load–deflection curves, crack distribution, vertical displacements and strains. The research findings indicate that fibres may improve peak strength. The presence of PP and ST hybrid fibres in HPC restricted the propagation of cracks. The energy absorption capacity as well as the ductility index of HPC can be raised by adding hybrid fibres. A comparison of the experimental test results with the nonlinear finite element analysis is made. The numerical results concurred well with the experimental data. The research results indicate that non-contact measurement of deformation is an effective tool for monitoring crushing in FRHPC slabs.

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Section: Materials Propertiesmentioning

confidence: 99%

Processes of Cracking and Crushing in Hybrid Fibre Reinforced High-Performance Concrete Slabs

Smarzewski

2019

Processes

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“…In the paper the selected results of the more comprehensive scientific investigation are presented. More analyses of beams behavior due to shear stress were published in [18,19]. In all tested beams first cracks were initiated at similar load level in the mid-span, and they propagated in the vertical direction.…”

Section: Plain Concrete and Slightly Reinforced Concrete Beamsmentioning

confidence: 99%

The analysis of failure in concrete and reinforced concrete beams with different reinforcement ratio

Słowik

2018

Arch Appl Mech

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In this paper the analysis of failure and crack development in beams made of concrete is presented. The analysis was carried out on the basis of the performed experimental investigation and numerical simulations. A fictitious crack model based on nonlinear fracture mechanics was applied to investigate the development of strain softening of tensile concrete in plain concrete and slightly reinforced concrete beams. The role of strain softening was also discussed according to the inclined crack propagation in highly reinforced concrete beams. The analysis has brought the evidence that the mode of failure in flexural beams varies according to a longitudinal reinforcement ratio. A brittle failure due to the formation of a flexural crack takes place in plain and slightly reinforced concrete beams, and strain softening of tensile concrete is of paramount importance at failure crack initiation and propagation. A stable growth of numerous flexural cracks is possible in moderately reinforced concrete beams, and then the load carrying capacity is connected with reaching the yield stress of reinforcing steel or concrete crushing in the compression zone. In higher reinforced concrete beams without transverse reinforcement, brittle failure can take place due to shear forces and the development of diagonal cracks. However, strain softening of tensile concrete is not the only mechanism influencing the propagation of an inclined crack. Such mechanisms as aggregate interlock and dowel action of steel bars contribute more importantly to the development of failure crack. Keywords Strain softening • Fictitious crack model • Failure process The paper entitled "The analysis of failure in concrete and reinforced concrete beams with different reinforcement ratio", presented at the ICSID 2017 Conference has been considered for publication in the Special Issue of the Archive of Applied Mechanics Journal (AAM SI ICSID 2017).

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“…In many studies, the nonlinear analysis of the reinforced concrete structural elements were provided on the basis finite element method using existing software. The non-linear analysis of the shear failure mechanism of reinforced concrete beams was presented in [10,11]. The nonlinear analysis carried out a using numerical algorithm for the reinforced concrete shells under static and dynamic loading were presented in [12].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Relaxation Method for Load Capacity Analysis of Reinforced Concrete Elements

Szcześniak¹,

Stolarski²

2018

Applied Sciences

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Study of the scale effect on diagonal crack propagation in concrete beams

Cited by 27 publications

References 4 publications

Processes of Cracking and Crushing in Hybrid Fibre Reinforced High-Performance Concrete Slabs

Processes of Cracking and Crushing in Hybrid Fibre Reinforced High-Performance Concrete Slabs

The analysis of failure in concrete and reinforced concrete beams with different reinforcement ratio

Dynamic Relaxation Method for Load Capacity Analysis of Reinforced Concrete Elements

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