Basalt fiber reinforced expanded clay concrete for building structures

Chiadighikaobi, Paschal Chimeremeze; Харун, Махмуд; Galishnikova, Vera V.; Koroteev, Dmitry D.

doi:10.34910/mce.101.7

Cited by 8 publications

(9 citation statements)

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“…A brittle fracture most often occurs along certain crystallographic planes inside grains. This so-called intragranular fracture can be realized by cleavage and shearing, which differ in the type of fracture surfaces [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Quantitative and Qualitative Aspects of Composite Action of Concrete and Dispersion-Reinforcing Fiber

et al. 2022

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The interest in using polymer-dispersed reinforcement in the construction industry in the context of sustainability has led to significant research on this scientific problem. The article is devoted to studying the processes of fiber interaction depending on its dispersion and the concrete matrix, and their combined contact work during the formation of a concrete structure, work under stresses arising in a concrete body, and during a collapse. The physical and mechanical processes of deformation and destruction of the “matrix–fiber” system were studied using high-precision microscopic equipment, and the nature of the work and deformation of fibers in concrete were revealed. The work aimed to establish and characterize the quantitative and qualitative aspects of the concrete matrix and dispersion-reinforcing fiber combined work. It was established that the best values of the adhesion index were observed at a volume content of fiber in the amount of 2% by weight of cement, regardless of the type of dispersion-reinforcing fiber. It was shown that the microstructure of polydispersion-reinforced fiber-cement specimens was denser, and microcracks formed during fracture in polydispersion-reinforced specimens had a smaller opening width. It was established that polydispersion-reinforced concrete had higher values of strength (up to 126%) and deformation (up to 296%) characteristics compared to monodispersion fiber-reinforced concrete.

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Section: Introductionmentioning

confidence: 99%

Quantitative and Qualitative Aspects of Composite Action of Concrete and Dispersion-Reinforcing Fiber

et al. 2022

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“…Фибробетон эффективно показал себя при изготовлении цокольных панелей многоэтажных зданий, несъемной опалубки для обойм укрепления свайных фундаментов, стеновых панелей и монолитных стен, малых архитектурных форм при благоустройстве городских парков, архитектурного декора зданий и многих других. Несмотря на востребованность, научная проблема разработки и применения, облегченного фибробетона остается нерешенной и привлекает внимание ученых всего мира [1][2][3][4][5][6][7][8][9].…”

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“…Эти древние и простые методы армирования бетона теперь преобразованы в передовые методы, которые включают использование коротких волокон, случайным образом распределенных по бетонной матрице. Полученный композитный материал называется цементным композитом, армированным волокном, хотя известны и другие названия для бетонов, строительных растворов или паст, содержащих волокна в их матрицах [1][2][3][4].…”

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“…В [1,4] проверялось влияние рубленого базальтового волокна в керамзитобетоне на улучшение его прочности. Были получены экспериментальные зависимости поведения бетона под нагрузкой с помощью испытаний на сжатие и изгиб.…”

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“…Дисперсное рубленое базальтовое волокно использовалось в качестве армирования образцов размерами 100×100×100 мм и 100×100×400 мм. Фактически, влияние непосредственно на характер разрушения наблюдалось на керамзитобетоне без базальтовой фибры и затем считывалось по значению прочности и предельной деформации образцов [1].…”

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Influence of the Type of Fibers Used on the Strength and Deformation of Dispersed-Reinforced Lightweight Concrete

Chernil’nik

Smachney

El’shaeva

et al. 2022

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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Fiber-reinforced concretes with improved strength and deformation characteristics are widely used in construction. The research is aimed to study the stress-strain condition of lightweight fiber-reinforced concrete, to plot stress-strain diagrams and analyze them. In total, four series of prism specimens are manufactured and tested. The first series is the control composition of lightweight concrete; the second series is lightweight concrete with a basalt fiber content of 3%; the third series is lightweight concrete with a glass fiber content of 3 %; the fourth series is lightweight concrete with a basalt fiber content of 1.5 % and 1.5 % glass fiber. The experimental studies demonstrate that lightweight concrete reinforced with basalt fiber has the highest deformability. In comparison with glass fiber, basalt fiber has a higher tensile strength and a higher elastic modulus. The fact that the concrete matrix and basalt fiber work together better is primarily due to the best mechanical characteristics of the basalt fiber. Further research prospects are determined in terms of determining the adhesion strength of various types of fibers with a matrix and studying the effect of this indicator on both the strength and deformation characteristics of lightweight concrete.

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Mathematical modeling of mechanical properties of vibro-centrifuged fiber-reinforced concrete of variatropic structure

Shcherban’

Beskopylny

Mailyan

et al. 2021

J. Phys.: Conf. Ser.

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Today, one of the most relevant areas in the construction industry, linked to the requirements and provisions of the Strategy of Scientific and Technological Development, and in accordance with the priority areas of science and technology development, is the development and improvement of low-material, low-energy and low - resource-intensive technologies for the manufacture of concrete and reinforced concrete products and structures. In this regard, the technology of vibrocentrifugation, which allows to obtain concrete with an improved variatropic structure, is quite promising. In this work, the influence of the design parameters of the technological equipment and the parameters of the centrifugation modes on the integral strength characteristics of vibrocentrifugated fiber concrete was evaluated. In total, 13 samples of the annular section were manufactured and tested. Calculations of the integral strength characteristics of vibrocentrifugated fiber concrete depending on the height of the technological protrusions of the clamps and the angular rotation speed were performed by the method of orthogonal composite planning of the 2nd order using the MathCAD program. The mathematical method of planning the experiment is aimed at creating mathematical empirical models that determine the influence of the incoming variable factors on the strength characteristics. Thus, according to the results of experimental studies, the optimal height of the technological protrusions and the angular speed of rotation were determined. Thus, further regulation of technological factors in the manufacture of vibrocentrifugated products and structures will allow us to obtain the most effective ring-section structures with enhanced variatropy.

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Basalt fiber reinforced expanded clay concrete for building structures

Cited by 8 publications

References 0 publications

Quantitative and Qualitative Aspects of Composite Action of Concrete and Dispersion-Reinforcing Fiber

Quantitative and Qualitative Aspects of Composite Action of Concrete and Dispersion-Reinforcing Fiber

Influence of the Type of Fibers Used on the Strength and Deformation of Dispersed-Reinforced Lightweight Concrete

Mathematical modeling of mechanical properties of vibro-centrifuged fiber-reinforced concrete of variatropic structure

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