Study of carbon nano-modifier of fly ash in cement concrete mixtures of civil engineering

Bieliatynskyi, Аndrii; Yang, Shilin; Pershakov, Valerii; Shao, Meiyu; Ta, Mingyang

doi:10.1515/secm-2022-0018

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…There are two main problems of using this technology. The first problem is the use of mineral materials with high total surface activity (reactivity), which exceeds the permissible value [13]. The other one is the use of bitumen emulsions on bitumen, which do not provide the required rate of gain of the cohesive strength of the laid cast mixture.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the properties of cast asphalt concrete mixture with the addition of fiber from the fly ash of thermal power plants

Bieliatynskyi

Yang

Pershakov

et al. 2022

Materials Science-Poland

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The introduction of new road-building materials with advanced physical and mechanical properties is the trend in contemporary civil engineering, which aims to increase the quality of road surfaces. The use of cast asphalt concrete in the upper layers of road surfaces as a replacement for layers made of traditional fine-grained asphalt concrete will not only increase the pace of construction and repair, but also the durability and quality of the road pavement. However, this method requires operational and economic optimization. Using fiber from the fly ash of thermal power plants is one of the solutions for the design of cast asphalt concrete compositions. The aim of the work is to design the optimal composition of hot cast asphalt concrete and cold cast emulsion–mineral mixtures with the use of fiber from the fly ash of thermal power plants for the construction of thin-layer coatings of highways of all categories and values; to study their properties; and to determine the feasibility of their use as reinforcing and stabilizing additives. The method of GOST 11506, namely, “Method for determining the softening temperature of the ring and ball”, with the apparatus “Lintel KiSh-20m-4” was used during the experiments. The use of standard laboratory tests made it possible to analyze the quality indicators of the materials under study and design the optimal compositions of hot cast asphalt concrete, taking into account the delamination of the mixture and the criterion of decomposition, in addition to exploring the properties of the obtained material.

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Section: Methodsmentioning

confidence: 99%

Investigation of the properties of cast asphalt concrete mixture with the addition of fiber from the fly ash of thermal power plants

Bieliatynskyi

Yang

Pershakov

et al. 2022

Materials Science-Poland

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“…The used ash had a mixed chemical composition, as indicated in Table 1, after the combustion of anthracite and coal. These ashes have less active hydraulics than high-calcium ashes, their chemical and grain compositions are relatively more stable and uniform, and they do not adversely affect cement soundness [14]. Studies on the shrinkage of ash concrete showed that the introduction of ash reduces volumetric changes in concrete, and so the shrinkage of ash concrete (30% ash content) was 10%-20% lower than the control and did not depend on the quality of the concrete.…”

Section: Theoretical Overviewmentioning

confidence: 99%

Development of building materials based on a high content of fly ash and polycondensation products from Chinese heat and power plants

Bieliatynskyi

Yang

Pershakov

et al. 2022

Materials Science-Poland

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The addition of fly ash from thermal power plants (TPP) and chemical additives, such as polycondensation products of acetone and formaldehyde, is an effective and economical method for increasing the strength and durability of building materials, in particular concrete. Fly ash added to the concrete and mortars at 10%–15% does not reduce their technical properties, while polycondensation products of acetone and formaldehyde plasticize and accelerate the hardening process of concrete. The study aims to substantiate the possibility of obtaining concrete on dense aggregates with a high content of fly ash through the use of polycondensation products of acetone and formaldehyde as additives, which are highly soluble in water and polyfunctional. The strength indicators were determined using standard methods. The study has shown quantitative changes in the properties of the fly ash-concrete mixture, improvement of its physical and technical characteristics, and durability of the fly ash concrete with the addition of polycondensation products of acetone and formaldehyde. In the present study, the authors determine the effect of fly ash addition on the properties of a concrete mixture, as well as the maximum possible content of fly ash that can be added to concrete to maximize certain properties required of the mixture; additionally, the same action is conducted with the addition of polycondensation products of acetone and formaldehyde concomitant with the addition of fly ash.

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“…In the synthesis of a complex system of multi‐purpose cadastre formation, an aggregation procedure is implemented, which involves combining elements into groups taking into account the hierarchy of the system of indicators to analyze their impact on the integral features of the system. By the nature of development, a system has been selected that has the ability to develop and respond to a limited set of external factors (Bieliatynskyi et al, 2022c).…”

Section: Formation and Synthesis Of A Complex System Of Formation Of ...mentioning

confidence: 99%

Formation of factors of creation of multi‐purpose cadaster in Ukraine at the regional level

Bieliatynskyi,

Mamonov,

Shao

et al. 2024

Land Degrad Dev

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Modern conditions in Ukraine require a rethinking of approaches to the formation of rights, restrictions, responsibilities, real estate accounting, and assessment of factors influencing these processes. Therefore, the article aims to identify the factors affecting the formation and use of the multi‐purpose cadaster as a multi‐level information system, which allows it to form a systemic environment and develop the theoretical and methodological foundations of the territorial development of regions. As a result, it is established that the multi‐purpose cadaster is a modern information system that forms the basis for the implementation of the European land administration system, provides land and real estate management, taking into account spatial, urban, environmental, and investment factors, and the level of stakeholder interaction at the regional level. Finally, the relevance of the research consists in the fact that military actions, the consequences of the COVID‐19 pandemic, deforming economic transformations, imbalances in regional ties, and social imbalances have a negative impact. In such conditions, the development and implementation of a multi‐purpose cadaster at the regional level are of particular importance, taking into account the impact of spatial, urban, environmental, and investment factors and European experience in implementing land relations.

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Study of carbon nano-modifier of fly ash in cement concrete mixtures of civil engineering

Cited by 12 publications

References 17 publications

Investigation of the properties of cast asphalt concrete mixture with the addition of fiber from the fly ash of thermal power plants

Investigation of the properties of cast asphalt concrete mixture with the addition of fiber from the fly ash of thermal power plants

Development of building materials based on a high content of fly ash and polycondensation products from Chinese heat and power plants

Formation of factors of creation of multi‐purpose cadaster in Ukraine at the regional level

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