Optimization of Formula and Technological Parameters of Fiber-Reinforced Concrete Manufacturing

Babaev, V.; Alfimova, Nataliya; Nelubova, Viktoriya Viktorovna; Botsman, L.N.

doi:10.4028/www.scientific.net/msf.974.14

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…These materials include dispersed fibers. Analysis of the literature on the effect of microreinforcement on cellular composites confirms the positive effect of fibers on the characteristics of the finished material: fiber increases the strength characteristics of the material and prevents shrinkage deformations, fixing the initial pore structure and preventing foam syneresis [7][8][9].…”

Section: Introductionmentioning

confidence: 73%

Properties of Microfibers of Various Compositions as a Component of Cellular Composites

Netsvet

Popov

Nelubova

et al. 2021

MSF

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The paper presents studies on the properties of various types of micro-reinforcing fibers to assess their role and effectiveness in the structure formation of the cellular composite. Based on the data on the weight loss after exposure in a model medium of cement, analysis of the alkali resistance of fibers of five different types – basalt fiber, heat-treated basalt fiber, polymer fiber and glass fibers from two different manufacturers – was carried out. It is shown that the fibers have a sufficiently high durability in the medium of hardening cement, which is expressed by a relatively insignificant weight loss of the original fiber after exposure in a model medium for 28 days in ambient conditions. The weight loss for some fibers sharply increases when hardening conditions are changed to hydrothermal ones. The images of fibers exposed in a model medium of cement, obtained using scanning microscopy, were also analyzed, and the character of distribution of acidic and basic adsorption sites on the surface of fibers depending on the type was assessed. Based on the analysis of the obtained data, we can talk about a high number of active sites on the surface of basalt and glass fibers, which ensures the formation of crystalline new formations on them and makes it possible to predict their high adhesion to the cement matrix.

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Section: Introductionmentioning

confidence: 73%

Properties of Microfibers of Various Compositions as a Component of Cellular Composites

Netsvet

Popov

Nelubova

et al. 2021

MSF

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“…The use of concrete products and structures as carriers of photocatalysts is a promising measure to reduce the concentration of pollutants in the atmosphere and ensure self-cleaning of the surface in order to preserve the original decorative characteristics of buildings and structures in a highly polluted urban environment and infrastructure [1,2].…”

Section: Introductionmentioning

confidence: 99%

Properties of Cement with Photocatalytic Composite Material

Ogurtsova

Строкова

Zhao

et al. 2021

MSF

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The paper presents the results of the determination of the effect of a photocatalytic composite material (PCM) with the composition SiO2‒TiO2 on the main properties of white Portland cement: heat release during hydration, phase composition and microstructural features of cement stone, pressure strength and self-cleaning ability. PCM was synthesized by a sol-gel method based on tetrabutoxytitanium and finely dispersed diatomite powder and 15% cement was added instead. The presence of PCM in the cement system provided the reduction of the induction period of cement hydration, consolidation of the microstructure of the cement stone with the products of the pozzolanic reaction, the ability to photocatalytic self-cleaning of the cement stone surface.

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Composition and Properties of Fine-grained Concrete for Self-cleaning Coatings

et al. 2023

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The paper considers the dependences of the properties of self-cleaning fine-grained concrete on the composition of the concrete mixture: the ratio of sand to white Portland cement, the content of plasticizer, the content of photocatalytic composite material. The photocatalytic composite material (PCM) is a diatomite-based anatase-silica material obtained by sol-gel deposition of nanoscale TiO2 of anatase modification on a silica carrier. The investigated properties of fine-grained concrete were: average density, compressive strength and self-cleaning ability, which was determined by evaluating the photocatalytic decomposition of an organic dye – Rhodamine B. It was shown that an increase in the content of PCM to increase the ability of the coating to self-cleaning leads to a loosening of the structure of fine-grained concrete, but this can be successfully offset by an increase in the content of plasticizer, which additionally improves the distribution of the photocatalytic agent in the cement-sand matrix. An increase in the proportion of sand and the content of plasticizer also contribute to an increase in the ability to self-cleaning. The pozzolan activity of the PCM provides an increase in the strength of concrete. The results of comparing the self-cleaning ability of fine-grained concrete of various compositions indicate a high photocatalytic activity of samples with PCM, which allows its application for creating self-cleaning coatings.

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Optimization of Formula and Technological Parameters of Fiber-Reinforced Concrete Manufacturing

Cited by 3 publications

References 19 publications

Properties of Microfibers of Various Compositions as a Component of Cellular Composites

Properties of Microfibers of Various Compositions as a Component of Cellular Composites

Properties of Cement with Photocatalytic Composite Material

Composition and Properties of Fine-grained Concrete for Self-cleaning Coatings

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