Mechanical properties of steel and polymer fiber reinforced concrete

Babaie, Reza; Abolfazli, Milad; Fahimifar, Ahmad

doi:10.1515/jmbm-2019-0014

Cited by 50 publications

(18 citation statements)

References 17 publications

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“…On the other hand, the use of rubber recyclate together with waste glass powder or silica sand has a positive impact on the mechanical properties of manufactured concrete [ 44 , 45 ]. The mechanical properties of concretes can be improved, according to literature reports, by introducing polymer, sisal, or steel fibers into the concrete [ 46 , 47 , 48 ]. The compressive, tensile, and bending strength of concrete composites increases in comparison to normal concretes with an increase in the quantity of fibers amount.…”

Section: Introductionmentioning

confidence: 99%

Properties and Structure of Concretes Doped with Production Waste of Thermoplastic Elastomers from the Production of Car Floor Mats

Ulewicz

Pietrzak

2021

Materials

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This article presents physical and mechanical properties of concrete composites that include waste thermoplastic elastomer (TPE) from the production process of car floor mats. Waste elastomer (2–8 mm fraction) was used as a substitute for fine aggregate in quantities of 2.5, 5.0, 7.5, and 10% of the cement weight. For all series of concrete, the following tests were carried out: compression strength, bending tensile strength, splitting tensile strength, absorbability, density, resistance to water penetration under pressure, frost resistance, and abrasion resistance, according to applicable standards. Moreover, SEM/EDS analysis was carried out on the surface microstructure of synthesized concrete composites. It was proven that the use of production waste from the production process of car floor mats in the quantity of 2.5% does not influence the change of the concrete microstructure and it does not result in the decrease of the mechanical parameters of concrete modified with waste. All concrete modified with the addition of waste meet standards requirements after carrying out 15 cycles of freezing and thawing, and the average decrease in compression strength did not exceed 20%. Adding waste in the quantity of 2.5% allows for limiting the use of aggregate by about 5%, which is beneficial for the natural environment.

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Section: Introductionmentioning

confidence: 99%

Properties and Structure of Concretes Doped with Production Waste of Thermoplastic Elastomers from the Production of Car Floor Mats

Ulewicz

Pietrzak

2021

Materials

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“…After reaching the highest loading force (from 35 to 40 kN), the subsequent destruction process is very smooth and associated with large strains. The shape of the load–strain curves resembles the behavior of fiber-reinforced concretes [ 23 , 24 , 25 ]. In all tested fractal specimens, the loading process was stopped after reaching the maximum planned strain of 3.5%.…”

Section: Resultsmentioning

confidence: 99%

Concept of Using 3D Printing for Production of Concrete–Plastic Columns with Unconventional Cross-Sections

Katzer

Skoratko

2021

Materials

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A concept of concrete–plastic columns was presented in the paper. As a proof of concept, a research program was conducted. Seven different cross-sections of columns formwork were 3D printed using plastic. The cross-sections represented three types of columns’ shapes: most common, rare, and impossible to be realized using traditional formworks (based on fractals). Prepared plastic formworks were filled with cement mortar playing the role of ordinary concrete. After 28 days of curing, the load–strain characteristics of all the concrete columns were tested. Achieved results were discussed. It was proven that concrete–plastic columns were characterized by quasi-plastic behavior while being ultimately destroyed. Columns with fractal-based cross-sections sustained the largest strains while maintaining a significant part of the maximum load. The achieved results proved that it is possible to completely omit traditional steel rebar-stirrup reinforcement. The future direction of needed research should cover larger columns and other concrete–plastic elements. Using fiber-reinforced concrete for the creation of concrete–plastic elements should be also tested.

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“…1 Кальчев И.К., студент, kalchevigor00@gmail.com, ORCID: 0000-0003-4293-1930 1 Одесская государственная академия строительства и архитектуры ул. Дидрихсона, 4, г. Одесса, 65029, Украина Аннотация.…”

Section: лабораторні випробування призм із сталефібробетону на розтягunclassified

Laboratory Testing of Steel Fiber Concrete Prism for Tension in Bending

Surianinov¹,

Neutov²,

Korneeva³

et al. 2020

BOSACEA

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Abstract. Laboratory bending tests of concrete and steel-fiber-concrete prisms were carried out. The concrete matrix for all prisms is made of a concrete mixture of the same composition with a coarse aggregate size up to 10 mm and a water-cement ratio that allows correct mixing of the ready mixture with fiber, so that the latter is evenly distributed over the sample volume. Fiber reinforcement is 1% for all three types of fiber, a fiber made of the same steel with an ultimate strength of 1335 MPa, fiber length 50 mm, diameter 1 mm is used. Fibers differ only in shape, which makes it possible to compare test results across series without correction factors. Concrete samples without fiber are considered as control samples. As a result of laboratory tests, data sets were obtained and analyzed, which are presented in the form of diagrams. Different types of steel fiber show different increases in the load at the beginning of cracking and load-bearing capacity. The most profitable from this point of view is the addition of anchor fiber to concrete, the least – wave fiber. However, the presence of any of the considered steel fibers in the mixture significantly increases the load-bearing capacity of the sample. In addition, the type of destruction of such a sample changes from brittle to viscous. We also studied the deformability of samples with different fiber reinforcement and plotted the dependence of the relative longitudinal strain on the load. Before the crack formation begins, there is a direct proportionality between the load and the strain with the appearance of cracks, the slope of the graphs changes sharply. When the load-bearing capacity is lost, steel fiber-reinforced concrete samples are restrained from final destruction. The use of steel fiber in concrete on average increases the crack resistance by 40%, and the load-bearing capacity by 64%. Compared with samples without fiber reinforcement, samples with anchor fiber show an increase in load-bearing capacity by 89%, and crack resistance by 61%. When using flattened fiber, these values are 56% and 32%, and for wave fiber – 47% and 25%, respectively. The use of steel fiber in the manufacture of concrete mix avoids the brittle nature of destruction.

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Mechanical properties of steel and polymer fiber reinforced concrete

Cited by 50 publications

References 17 publications

Properties and Structure of Concretes Doped with Production Waste of Thermoplastic Elastomers from the Production of Car Floor Mats

Properties and Structure of Concretes Doped with Production Waste of Thermoplastic Elastomers from the Production of Car Floor Mats

Concept of Using 3D Printing for Production of Concrete–Plastic Columns with Unconventional Cross-Sections

Laboratory Testing of Steel Fiber Concrete Prism for Tension in Bending

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