The Fiber-Reinforced Concrete Constructions Experimental Research

Klyuev, Sergey; Khezhev, T. A.; Pukharenko, Yu. V.; Klyuev, A.V.

doi:10.4028/www.scientific.net/msf.931.598

Cited by 28 publications

(8 citation statements)

References 12 publications

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“…As it was explained before and in accordance with the object of this paper, the main idea is to simulate with all possible details conditions of an environment. Similar conditions were considered in the works [29][30][31][32].…”

mentioning

confidence: 87%

Thermal Properties of Conventional and High-strength Concrete

et al. 2018

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Important characteristics for the Nordic countries: a freeze-thaw resistance and an ability of a material to keep heat inside the building. This paper aims to define the thermophysical properties of a high-strength concrete, compare the discovered performance with the conventional concrete properties. With this object in mind two experiments in cold chamber “CHALLENGE 250” have been conducted and followed by analysis. In these experiments, the insulation of facades is beyond the framework of the investigation. Only the thermophysical properties of concrete are taken into account. The samples were affected by temperature fluctuations. Results from the experiments show that strength characteristics of a material are in indirect ratio to accumulation properties of a structure. This conclusion is directly related to porosity of material and additives. During 70 minutes, with outside temperature being below zero, the temperature inside the concrete dropped to an average. As the outside temperature increases significantly to more than zero, the temperature inside the concrete has become below average (continued to decline) in 70 minutes. The more strength of material, the better thermophysical properties. High-strength concrete is less susceptible to temperature fluctuations, therefore more heat-resistant. As mentioned in the paper below, the material has one disadvantage: this is a large cost per cubic meter.

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confidence: 87%

Thermal Properties of Conventional and High-strength Concrete

et al. 2018

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“…According to the provisions of geomimetics science on the affinity of structures proposed by Lesovik [32], for designing an optimal composite, it is necessary that its components have the same linear expansion coefficients, deformation characteristics, adhesive characteristics, etc. Therefore, taking into account the genesis of the raw materials, it is possible to form a composite structure of a given quality [33]. Table 4 lists the deformative characteristics of quartz sandstone, allowing its use for aggregate in heavyweight concrete.…”

Section: Preparation Of Qs Aggregatementioning

confidence: 99%

Production of Greener High-Strength Concrete Using Russian Quartz Sandstone Mine Waste Aggregates

et al. 2020

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Quartz sandstone (QS) is a mine waste; therefore, its use in construction allows for both reducing the cost of the concrete and contributing to the utilization of waste. The scientific originality of this study is the identification of models of the effect of QS aggregate on the physicomechanical, durability characteristics, and eco-safety of greener high-strength concrete. The study used an energy-efficient method of non-thermal effects of electromagnetic pulses on the destruction mechanisms of quartz-containing raw materials. The characteristics of quartzite sandstone aggregates, including the natural activity of radionuclides, were comprehensively studied. The features of concrete hardening, including the formation of an interfacial transition zone between the aggregate and the cement matrix, were studied, taking into account the chemical and morphological features of quartzite sandstone. In addition, the microstructural and morphological properties of concrete were determined after a 28 day curing. In this study, the behaviors of the concrete with QS aggregate were investigated, bearing in mind the provisions of geomimetics science on the affinity of structures. The results obtained showed that the QS aggregate had the activity of natural radionuclides 3–4 times lower compared to traditional aggregates. Efficient greener concrete with a 46.3 MPa compressive strength, water permeability grade W14, and freeze–thaw resistance of 300 cycles were also obtained, demonstrating that the performance of this greener concrete was comparable to that of traditional concrete with more expensive granite or gabbro diabase aggregates.

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“…High-strength concrete is concrete with high mechanical properties; it has very high strength (compression more than 150 MPa, tensile more than 8 MPa). Dispersed reinforcement is also used in producing of the high-strength concrete [13]. Such concrete is more durable and longeval, has increased resistance to various chemicals and to freeze-thaw cycles.…”

Section: Introductionmentioning

confidence: 99%

“…The small diameter of the fiber contributes to the rapid destruction of fiber. Fiber can be protected by using sheet steel fiber obtained at high manufacturing temperatures or with anti-corrosion coatings [13,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Dispersed reinforcement of columns of a high-rise building

et al. 2020

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The article deals with the application of combined reinforcement of concrete with steel and basalt fibers. A model of a high-rise building was calculated in the LIRA-SAPR 2013 software. Design and characteristic strength of steel fiber and basalt fiber reinforced concretes to compression and tension and the initial elastic modulus were determined to calculate the model. Comparison of the effect of B40 concrete steel fiber reinforced concrete (SFRC) and basalt fiber reinforced concrete (BFRC) on column reinforcement was performed by comparing the required areas of reinforcement, as well as the percentage of reinforcement, taking into account crack resistance. The total area of reinforcement decreased with the addition of steel fiber by 36.9% and basalt fiber by 39.9%. The percentage of reinforcement also decreased, taking into account crack resistance, from 0.694 for columns with concrete B40 to 0.437 for SFRC columns and to 0.417 for BFRC columns. The addition of fiber increases the strength characteristics of concrete: compressive strength increased by 35.8% and 77.2%, tensile strength by 150.2% and 75.7%, crack resistance by 37% and 39.9%, the initial modulus of elasticity of the material increased by 8.7% and 3.7% for SFRC and BFRC respectively compared with concrete B40.

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The Fiber-Reinforced Concrete Constructions Experimental Research

Cited by 28 publications

References 12 publications

Thermal Properties of Conventional and High-strength Concrete

Thermal Properties of Conventional and High-strength Concrete

Production of Greener High-Strength Concrete Using Russian Quartz Sandstone Mine Waste Aggregates

Dispersed reinforcement of columns of a high-rise building

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