Optimization techniques for the design of high-performance fibre-reinforced concrete

Karihaloo, Bhushan Lal; Lange-Kornbak, D.

doi:10.1007/s001580050165

Cited by 18 publications

(9 citation statements)

References 15 publications

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“…The results are in agreement with those obtained from the expression in [43]. The effect of V f in f t is slightly lower in the numerical simulations, but larger than those reported in [45].…”

Section: Resultssupporting

confidence: 91%

“…It can be observed that the numerical results are in agreement with those obtained from [43] and the trend is similar to that of the parallel behavior, as expected. On the other hand, it can be also observed that as V f increases, the scatter decreases as a result of an increase in the number of nodes in the system.…”

Section: Resultssupporting

confidence: 88%

“…In this work, the uniaxial tensile response of steel fiber-reinforced concrete (SFRC) is validated using the analytical model proposed by Karihaloo and Lange-Kornbak [43] and experimental double-edge-notched (DEN) tension tests by Gopalaratnam and Shah [44]. On the other hand, the influence of V f and θ in the tensile response is analyzed by means of unnotched uniaxial tension tests.…”

Section: Resultsmentioning

confidence: 99%

“…In Figure 6, the numerical results are compared to the analytical expression from [43] and the rule of mixture bounds for composite materials. It can be observed that the numerical results are in agreement with those obtained from [43] and the trend is similar to that of the parallel behavior, as expected.…”

Section: Resultsmentioning

confidence: 99%

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Mesoscale Characterization of Fracture Properties of Steel Fiber-Reinforced Concrete Using a Lattice–Particle Model

2017

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This work presents a lattice–particle model for the analysis of steel fiber-reinforced concrete (SFRC). In this approach, fibers are explicitly modeled and connected to the concrete matrix lattice via interface elements. The interface behavior was calibrated by means of pullout tests and a range for the bond properties is proposed. The model was validated with analytical and experimental results under uniaxial tension and compression, demonstrating the ability of the model to correctly describe the effect of fiber volume fraction and distribution on fracture properties of SFRC. The lattice–particle model was integrated into a hierarchical homogenization-based scheme in which macroscopic material parameters are obtained from mesoscale simulations. Moreover, a representative volume element (RVE) analysis was carried out and the results shows that such an RVE does exist in the post-peak regime and until localization takes place. Finally, the multiscale upscaling strategy was successfully validated with three-point bending tests.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Mesoscale Characterization of Fracture Properties of Steel Fiber-Reinforced Concrete Using a Lattice–Particle Model

2017

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“…The objective function was the total cost of the building including the cost of floors, columns and foundations. Karihaloo and Kornbak (2001) demonstrated how rigorous mathematical programming techniques can be employed in the design of fibre-reinforced concrete mixes which have both high tensile strength and high ductility.…”

Section: Introductionmentioning

confidence: 99%

Prediction and multi-objective optimization of high-strength concrete parameters via soft computing approaches

Baykasoğlu

Öztaş

Özbay

2009

Expert Systems with Applications

119

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Hydromechanical couplings of reinforced tensioned members of steel fiber reinforced concrete by dual lattice model

Pham

Sorelli

Fafard

et al. 2020

Num Anal Meth Geomechanics

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The durability of concrete structures strongly depends on the water and chloride penetration in cracked concrete during its service life. This work aims at modeling the damage effect of tension stiffening behavior on the permeability for concrete tie specimen under tensile load by a dual lattice model, which considers hydromechanical couplings. Three concrete materials, including normal strength concrete (NSC), steel fiber reinforced concretes (SFRC), and ultra high‐performance fiber reinforced concrete (UHPFRC), are considered. The hydromechanical lattice model is based on a dual element network modeling: the water transport and the mechanical response. The fiber bridging effect is considered by means of the cohesive law of Mazars. The water flow in the damaged conduit elements is proportional to the cube of the crack width, which results from the damage variable. Experimental results available in open literature for both NSC and SFRC tie specimens are used to analyze and validate the proposed model. Considering a UHPFRC tie specimen, the model well predicted the load drops due to macrocrack occurrence, load hardening, and permeability evolution. Based on the present results, the current lattice hydromechanical model is a useful tool for predicting the service life of steel bar reinforcing concrete structure with and without steel fiber reinforcement.

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Optimization techniques for the design of high-performance fibre-reinforced concrete

Cited by 18 publications

References 15 publications

Mesoscale Characterization of Fracture Properties of Steel Fiber-Reinforced Concrete Using a Lattice–Particle Model

Mesoscale Characterization of Fracture Properties of Steel Fiber-Reinforced Concrete Using a Lattice–Particle Model

Prediction and multi-objective optimization of high-strength concrete parameters via soft computing approaches

Hydromechanical couplings of reinforced tensioned members of steel fiber reinforced concrete by dual lattice model

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