Mechanical Behavior of Polymeric Synthetic Fiber in the Concrete

Mačanovskis, Artūrs; Krasņikovs, Andrejs; Kononova, Olga; Lukašenoks, Artūrs

doi:10.1016/j.proeng.2017.02.079

Cited by 12 publications

(9 citation statements)

References 2 publications

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“…Its tensile strength is low and short fibers, added as reinforcement, are able to improve the situation, simultaneously strengthening and toughening the material. In the modern construction, a concrete matrix is successfully reinforced with various fibers, applying various materials and methods [12][13][14][15][16][17][18]. Currently, fiber reinforced concrete (FRC) is increasingly used in various structural engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Modelling of the Layered Concrete with Different Concentration of Short Fibers in the Layers

Lūsis

Kononova

Mačanovskis

et al. 2021

Fibers

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The use of steel fiber reinforced concrete (SFRC) in structures with high physical-mechanical characteristics allows engineers to reduce the weight and costs of the structures, to simplify the technology of their production, to reduce or completely eliminate the manual labor needed for reinforcement, at the same time increasing reliability and durability. Commonly accepted technology is exploiting randomly distributed in the concrete volume fibers with random each fiber orientation. In structural members subjected to bending, major loads are bearing fibers located close to outer member surfaces. The majority of fibers are slightly loaded. The aim of the present research is to create an SFRC construction with non-homogeneously distributed fibers. We prepared layered SFRC prismatic specimens. Each layer had different amount of short fibers. Specimens were tested by four point bending till the rupture. Material fracture process was modelled based on the single fiber pull-out test results. Modelling results were compared with the experimental curves for beams. Predictions generated by the model were validated by 4PBT of 100 × 100 × 400 mm prisms. Investigation had shown higher load-bearing capacity of layered concrete plates comparing with plate having homogeneously distributed the same amount of fibers. This mechanism is strongly dependent on fiber concentration. A high amount of fibers is leading to new failure mechanisms—pull-out of FRC blocks and decrease of load-bearing capacity. Fracture surface analysis was realized for broken prisms with the goal to analyze fracture process and to improve accuracy of the elaborated model. The general conclusion with regard to modelling results is that the agreement with experimental data is good, numeric modelling results successfully align with the experimental data. Modelling has indicated the existence of additional failure processes besides simple fiber pull-out, which could be expected when fiber concentration exceeds the critical value.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Modelling of the Layered Concrete with Different Concentration of Short Fibers in the Layers

Lūsis

Kononova

Mačanovskis

et al. 2021

Fibers

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“…Fiber Reinforced Concrete (FRC) behaves mechanically different from conventional concrete (Köroglu & Özdöner, 2016). FRC generally includes steel fiber , natural fibers (Bharath & Basavarajappa, 2016;Wei & Meyer, 2015), synthetic fibers (Amin, Foster, Gilbert, & Kaufmann, 2017;Macanovskis, Krasnikovs, Kononova, & Lukasenoks, 2017;Richardson & Ovington, 2017;Zhang & Li, 2012) and glass fibers (Tassew & Lubell, 2014). A Great number of experimental studies have been conducted (Köksal, Gencel, Unal, & Durgun Muhammed, 2012;Lee, Yi, & Oh, 2008;Li, Li, Shi, & Zhou, 2017;Liu, Lu, Wang, & Liang, 2017;Macanovskis et al, 2017;C.…”

Section: Introductionmentioning

confidence: 99%

Behavior of composite self-compacting concrete (SCC) reinforced with steel wires from waste tires

Köroğlu

2019

rdlc

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Large amount of waste tires are generated progressively every year. Therefore, many researches have been conducted on using recycled tire products in several civil engineering products. This paper is focusing on feasibility of using recycled steel fibers from waste tires as reinforcement in functionally graded self-compacting concrete (SCC). Firstly, fresh and hardened properties of the normal and steel fiber reinforced concretes were investigated. After obtaining the mechanical properties of steel fiber reinforced SCC, 16 multi-layered beams were tested under 4 point bending test by considering various fiber fractions and layer thickness. Additionally, SEM images were used to maintain the failure mechanisms between steel fibers and concrete matrix.

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“…Short fibres may be the main or the secondary reinforcement (in combination with rebars) bearing the bending moments and the shear stresses. We can mention investigations were a concrete matrix is successfully reinforced with various fibres, made out of various materials [10]- [13] and by different methods [13]- [19]. Homogenously mixed concrete with added short fibres is used widely for shrinkage crack arrest in combination with additional reinforcement [20].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Numerical Modelling for Flexural Capacity of FRC Structural Elements

Bleive

Lūsis

2021

ETR

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Concrete reinforced by short steel fibres is typical brittle matrix composite, in which fibres are impeding cracks growth, such way increasing material’s tensile strength. The use of steel fibre reinforced concrete (SFRC) in structures with high physical and mechanical characteristics makes possible to reduce their weight and cost, to simplify their production technology, to reduce or eliminate reinforcement labour, at the same time increasing reliability and durability. Randomly distributed discontinuous fibres are bridging the crack’s flanks providing material’s “ductility”- like non-linear behaviour at cracking stage. The current study is focused on one formulation of a specific type of concrete matrix with added fibres and without fibres. Concrete cubes and prisms without fibres and having in every situation the same content of 60 mm long fibres were fabricated. Cubes (100×100×100 mm) were tested in compression and beams (100×100×400 mm prisms) were tested under four-point bending (4PBT). Fracture process (crack growth) in the material was modelled, based on experimental results (part of experimental data was used). Finite element method (FEM) using the ANSYS program analysis were realized modelling stress distributions in the broken beams with the goal to predict fracture process. Model’s prediction was validated.

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Mechanical Behavior of Polymeric Synthetic Fiber in the Concrete

Cited by 12 publications

References 2 publications

Experimental Investigation and Modelling of the Layered Concrete with Different Concentration of Short Fibers in the Layers

Experimental Investigation and Modelling of the Layered Concrete with Different Concentration of Short Fibers in the Layers

Behavior of composite self-compacting concrete (SCC) reinforced with steel wires from waste tires

Experimental Study and Numerical Modelling for Flexural Capacity of FRC Structural Elements

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