Finite Element Modelling and Identification of the Material Properties of Fibre Concrete

Sucharda, Oldřích; Konečný, Petr; Kubosek, Jan; Ponikiewski, Tomasz; Done, Petra

doi:10.1016/j.proeng.2015.06.222

Cited by 17 publications

(8 citation statements)

References 3 publications

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“…A general trend characterizing all residual flexural tensile strengths is that the larger the volume of added fiber and the larger aspect ratio of added fiber the larger the value of residual strength. In this instance, the behavior of the tested SFRCs is similar to other SFRCs (including self-compacting SFRCs) [21][22][23] .…”

Section: Flexural Characteristics According To Lop Methodssupporting

confidence: 58%

Comprehensive approach to evaluation of mechanical properties of waste aggregate concrete reinforced by steel fiber

Domski

Katzer

2019

Structural Concrete

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Waste aggregate concretes are playing a more and more important role in construction industry. Over the last decade, their application has evolved from very basic pavements and elements with limited mechanical characteristics to full scale structures and large pre‐cast beams and slabs. In some cases, steel fiber was used as the only reinforcement of such elements. The application of steel fiber was based on the assumption that the influence of dispersed reinforcement would be the same as it was in ordinary concrete. Therefore, both technologies of preparation of such concrete and volumes of added fiber were the same as in ordinary concrete. In authors’ opinion, concrete based on waste aggregate creates much more complex environment for fiber reinforcement than traditional cement matrix. Recognizing the need of comprehensive approach to this problem, authors conducted a thorough research program. Concrete based on waste red ceramic aggregate was modified by different volumes of varied engineered steel fiber. Conducted tests covered full mechanical characteristics. Strength classes according to fib model code were assigned to tested fiber concretes. The best mixes were pointed out.

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Section: Flexural Characteristics According To Lop Methodssupporting

confidence: 58%

Comprehensive approach to evaluation of mechanical properties of waste aggregate concrete reinforced by steel fiber

Domski

Katzer

2019

Structural Concrete

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“…The FRBC is FRC that self-repaired by bacteria is rather preferred where the composite system incorporation inside the concrete leads to more stability over shelf-life. Not only the study of FRBC basic material properties (compressive and tensile strength) is essential, but also the specific new material properties as flexure strength and flexure toughness are important [100,101]. Adding fibers to the conventional concrete and SR concept of FRC could accomplish many advantages for so-called FRBC such as follows;…”

Section: Fiber-reinforced-bacterial-concretementioning

confidence: 99%

Self-repairing polyethylene fiber-reinforced-concrete with bacillus subtilis bacteria a review

Ghoneim

Hassan

Aboul-Nour

2020

IJET

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Fibers and bacterial additives in concrete have achieved significant success as a construction material. This paper presents the field of concrete self-repairing by introducing both Bacillus subtilis bacteria and polyethylene fiber as a dual-components. The main research goal is to reveal the principles of concrete self-repairing. At first, the research investigates the fiber-reinforced-concrete behavior, the concrete self-repairing process with the Bacillus subtilis bacteria for forming bacterial-concrete. And then, the study highlights the damage-repairing numerical simulation of fiber-reinforced-bacterial-concrete. The research shows the bacterial-concrete benefits to durability and mechanical properties besides to the polyethylene fiber assistance to enhance post-cracking tensile resistance and the pre-peak elastic modulus of concrete. The novelty of the fiber-reinforced-bacterial-concrete is the matrix combined improvement of both basic material properties and the post-cracking deflection capacity.

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“…HJC constitutive model is a dynamic constitutive model applicable to concrete with strain rate effect. For high parameter steel fiber reinforced concrete, it has obvious enhancement and toughening effect [25]. Therefore, a modified HJC model is proposed for high parameter steel fiber reinforced concrete, which can reflect the effect of steel fiber on strengthening and toughening of concrete.…”

Section: Modified Hjc Constitutive Model For High Parameter Steel Fibmentioning

confidence: 99%

Dynamic Constitutive Model Analysis of High Parameter Steel Fiber Reinforced Concrete

Luo

2019

Symmetry

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The traditional Holmquist-Johnson-Cook (HJC) constitutive model does not consider the effect of crack resistance, reinforcement and toughening effect of high parameter steel fiber on original concrete. The causes of the analysis effect of the high parameter reinforced concrete is not obvious. To address this problem, a dynamic constitutive model of high parameter steel fiber reinforced concrete is built in this paper. Based on the static constitutive model built by static force, a dynamic constitutive model is built based on the similarity between static and dynamic stress-strain curve. On this basis, the yield surface equation, state equation, and damage evolution equation of HJC constitutive model are constructed. An improved HJC constitutive model for high parameter steel fiber reinforced concrete is obtained by introducing the modification of the steel fiber reinforced, toughened, and strain rate effects into the HJC constitutive model. Dynamic analysis of high parameter steel fiber reinforced concrete is achieved by using the improved model. Experimental results show that the proposed model is effective in analyzing high parameter concrete and has strong applicability.Symmetry 2019, 11, 377 2 of 14 and high strain rate. Due to it can describe the damage, fragmentation and spalling of concrete under high speed impact, it has been widely used in numerical simulation [12]. In this paper, based on the HJC constitutive model, the finite element analysis method for the dynamic constitutive model of high parameter steel fiber concrete is proposed in consideration of crack resistance, reinforcement, and toughening effect of high parameter steel fiber on original concrete. Dynamic Constitutive Model Built by Static ForceThe dynamic constitutive model built by static force is based on static constitutive model and combined with the similarity between stress-strain curves of static and dynamic forces. The dynamic constitutive model built by static force does not consider the strain rate effect of concrete [13], and the parameters selected are relatively few, which is more convenient in the fitting process. However, the consistency of this kind of constitutive model is slightly deficient. In this paper, the dynamic damage constitutive model is introduced.For the static constitutive model, the Brooks damage constitutive model is used, as shown in Figure 1.Symmetry 2018, 10, x FOR PEER REVIEW 2 of 15 and high strain rate. Due to it can describe the damage, fragmentation and spalling of concrete under high speed impact, it has been widely used in numerical simulation [12]. In this paper, based on the HJC constitutive model, the finite element analysis method for the dynamic constitutive model of high parameter steel fiber concrete is proposed in consideration of crack resistance, reinforcement, and toughening effect of high parameter steel fiber on original concrete.

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Finite Element Modelling and Identification of the Material Properties of Fibre Concrete

Cited by 17 publications

References 3 publications

Comprehensive approach to evaluation of mechanical properties of waste aggregate concrete reinforced by steel fiber

Comprehensive approach to evaluation of mechanical properties of waste aggregate concrete reinforced by steel fiber

Self-repairing polyethylene fiber-reinforced-concrete with bacillus subtilis bacteria a review

Dynamic Constitutive Model Analysis of High Parameter Steel Fiber Reinforced Concrete

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