Grigory Yakovlev
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View article: Research Results of Municipal Sewage Sludge Applied for Building Material Production
Research Results of Municipal Sewage Sludge Applied for Building Material Production Open
The study presents the experimental results on the use of ash obtained as a result of incineration of municipal sewage sludge from the water utility of Izhevsk, Udmurt Republic, for construction material production. Research methods are gi…
View article: RESEARCH OF THE BINDER SYSTEM STRUCTURE BASED ON THERMAL ACTIVATED EXPANDED CLAY DUST
RESEARCH OF THE BINDER SYSTEM STRUCTURE BASED ON THERMAL ACTIVATED EXPANDED CLAY DUST Open
The production of Portland cement is associated with a high consumption of mineral raw materials and significant emissions of carbon dioxide into the atmosphere. Therefore, the partial replacement of cement with technogenic mineral additiv…
View article: Environmental Politics in Authoritarian Regimes: Waste Management in Russian Regions
Environmental Politics in Authoritarian Regimes: Waste Management in Russian Regions Open
Russian regions exhibit significant variation in their waste management efforts, despite the urgency of the problem and the importance of waste management for all regional governments. To examine this variation, we apply the concept of aut…
View article: Properties of Cement-Based Composites Modified with Metal/Carbon Nanocomposite
Properties of Cement-Based Composites Modified with Metal/Carbon Nanocomposite Open
The objective of this research is to study and analyse the properties of a cement-based composite modified with nickel/carbon nanocomposite (Ni/C NC). According to previous studies carried out by scientists in the field of nanostructures, …
View article: Effect of Electrochemical Corrosion on the Properties of Modified Concrete
Effect of Electrochemical Corrosion on the Properties of Modified Concrete Open
Analysis of the use of reinforced concrete structures confirmed the destruction of reinforced products based on Portland cement due to stray currents, which makes it impossible to achieve the required durability and reliability of structur…
View article: Study of the Structure and Properties of Electrical Sand Concrete under Prolonged Exposure to Sulfate Environment
Study of the Structure and Properties of Electrical Sand Concrete under Prolonged Exposure to Sulfate Environment Open
Destructive processes accompanying sulfate corrosion of concrete significantly affect the durability of products and structures based on Portland cement. In the presented study, the long-term effect of sulfate corrosion on the electrical p…
View article: Cement Compositions Modified with Dispersed Magnesium Silicate Dihydrate- and Carbon-Based Additives
Cement Compositions Modified with Dispersed Magnesium Silicate Dihydrate- and Carbon-Based Additives Open
This study is based on the hypothesis that carbon black and chrysotile nanofibers, due to their ability to act as micro-reinforcement of the cement matrix and stimulate the formation of additional amounts of calcium silicate hydrates, can …
View article: Impact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivity
Impact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivity Open
Electroconductive cement-based composites are modern materials that are commonly used in many industries such as the construction industry, among others. For example, these materials can be used as sensors for monitoring changes in constru…
View article: Silicate conductive composites with graphite-based fillers
Silicate conductive composites with graphite-based fillers Open
Electroconductive composites are modern materials that are commonly used in many industries such as construction industry and machine-building industry. For example, these materials can be useful as sensors for monitoring changes in constr…
View article: Sustainable Ways and Methods of Recycling Epoxy Fiberglass Waste
Sustainable Ways and Methods of Recycling Epoxy Fiberglass Waste Open
This article presents two technological ways of recycling the wastes of the production and application of products made of highly oriented fiberglass bound by the epoxy matrix. The first technology is aimed at shredding the epoxy-based pro…
View article: Application of Ceramsite Dust as an Active Pozzolan Additive in the Cement-Based Compositions
Application of Ceramsite Dust as an Active Pozzolan Additive in the Cement-Based Compositions Open
Ceramsite (expanded clay) dust is a waste material, obtained in large volumes all over the world as a by-product of ceramsite gravel production. With the development of the construction industry and the ever-growing amount of ceramsite dus…
View article: A Study on the Adhesion in the Interfacial Transition Zone Between Glass Fibre Reinforced Rebar and the Cement Matrix
A Study on the Adhesion in the Interfacial Transition Zone Between Glass Fibre Reinforced Rebar and the Cement Matrix Open
This study is aimed at increasing the adhesion of the fibre-reinforced polymer rods to the binder in the cement-based composites in order to eliminate the problem of rod slippage under loading and broaden the application of composite reinf…
View article: Effect of Ultrafine Additives on the Morphology of Cement Hydration Products
Effect of Ultrafine Additives on the Morphology of Cement Hydration Products Open
The present research is focused on the investigation of the influence of ultrafine additives on the structure formation of hardened cement paste and the establishment of the mechanisms of the morphological transformations, which determine …
View article: Modification of Cement Matrix with Complex Additive Based on Chrysotyl Nanofibers and Carbon Black
Modification of Cement Matrix with Complex Additive Based on Chrysotyl Nanofibers and Carbon Black Open
This paper presents the results of studying the properties of cement-based composites modified with a complex additive based on chrysotile nanofibers and carbon black. The optimal composition of complex additive was stated due to the parti…
View article: Evaluation of Changes in Structure of Modified Cement Composite Using Fractal Analysis
Evaluation of Changes in Structure of Modified Cement Composite Using Fractal Analysis Open
The need for research using modern methods of physical and chemical analysis in combination with methods for processing the graphical results arises with an increase of developments aimed at changing the structure and properties of hydrati…
View article: The Effect of Complex Modification on the Impedance of Cement Matrices
The Effect of Complex Modification on the Impedance of Cement Matrices Open
The research results presented in this article were obtained by joint scientific research on creatingcement materials with reduced impedance. It is known that functional additives added to impart electrically conductive properties have a n…
View article: Shielding silicate coating modified with multi-walled carbon nanotube dispersion
Shielding silicate coating modified with multi-walled carbon nanotube dispersion Open
A facade coating with decorative and protective functions has developed using the fine microfillers and an additive. The facade coating has the increased sustainability and additional properties compared to existing paints. The coating is …
View article: FLUOROANHYDRITE COMPOSITIONS PLASTICIZED BY POLYCARBOXYLATE ESTERS
FLUOROANHYDRITE COMPOSITIONS PLASTICIZED BY POLYCARBOXYLATE ESTERS Open
The influence of a plasticizer based on polycarboxylate esters on the properties of a high-strength fluoroanhydrite composition and a lightweight composition with expanded perlite sand is investigated. It was shown that the addition of 2% …
View article: A STUDY ON MECHANICAL PROPERTIES AND STRUCTURE OF ANHYDRITE BINDER MODIFIED BY ULTRA-DISPERSED SILTSTONE
A STUDY ON MECHANICAL PROPERTIES AND STRUCTURE OF ANHYDRITE BINDER MODIFIED BY ULTRA-DISPERSED SILTSTONE Open
This research is devoted to modification of physical and mechanical properties and structure of a binder based on natural anhydrite. A sedimentary rock siltstone was added into the composition as a mineral ultrafine additive. The presence …
View article: The Electrical Conductivity of Fluoroanhydrite Compositions Modified at the Nanoscale Level with Carbon Black
The Electrical Conductivity of Fluoroanhydrite Compositions Modified at the Nanoscale Level with Carbon Black Open
The electrical conductivity of fluoroanhydrite compositions modified with different amounts of ultrafine soot was studied. The optimal ratio of additive and binder was determined in terms of both electrical conductivity and compressive str…
View article: IMPACT OF MULTI-WALLED CARBON NANOTUBES ON WOOD SAWDUST EXTRACT CEMENT MORTAR
IMPACT OF MULTI-WALLED CARBON NANOTUBES ON WOOD SAWDUST EXTRACT CEMENT MORTAR Open
It is well known that organic waste materials deteriorate the performance of concrete. The impregnation of organic aggregates and their application in combination with other chemical admixtures and mineral additives are used in order to im…
View article: High-strength fluoroanhydrite composition
High-strength fluoroanhydrite composition Open
The research studies the properties of a high-strength anhydrite composition based on fluoroanhydrite, a waste product of hydrofluoric acid. To activate fluoranhydrite, Na3PO4 sodium phosphate was added to the composition in an amount of 3…
View article: Gypsum composition with siltstone-based mineral modifier
Gypsum composition with siltstone-based mineral modifier Open
The paper presents the results of studies of the structure and properties of the gypsum composition comprising 3% of crushed siltstone, a metamorphic rock. The structure and physicochemical properties of siltstone were studied, which prede…
View article: Efficient heat-insulating material based on technogenic anhydrite
Efficient heat-insulating material based on technogenic anhydrite Open
Physical and mechanical properties of the heat-insulating composition based on high-strength anhydrite binder with expanded perlite sand as a lightweight aggregate have been studied. The study has evaluated the influence of two poring comp…
View article: Structural Ceramics Modified with Technogenic Isostatic Nanographite
Structural Ceramics Modified with Technogenic Isostatic Nanographite Open
During the production of ceramic wall materials based on acidic and semi-acidic loams, products with low physical and technical parameters are obtained. To improve the characteristics of structural ceramics, it is suggested to modify the r…
View article: Modification of the structure and Properties of Fine-Grained Concrete with Carbon Black Dispersion
Modification of the structure and Properties of Fine-Grained Concrete with Carbon Black Dispersion Open
The study shows that adding carbon black (soot) in the form of an aqueous dispersion into the composition of fine-grained concrete leads to an increase in bending and compressive strength of the samples: at a soot concentration of 0.005% b…
View article: Structural and Thermal Insulation Materials Based on High-Strength Anhydrite Binder
Structural and Thermal Insulation Materials Based on High-Strength Anhydrite Binder Open
The properties of a structural and thermal insulation composition based on a high-strength anhydrite binder based on fluoroanhydrite and expanded perlite sand have been studied. Fluoroanhydrite is a waste product of hydrofluoric acid and i…
View article: Dispersion Degree and its Influence on Structure of Building Materials
Dispersion Degree and its Influence on Structure of Building Materials Open
The main basic characteristic of building materials which determines physical and technical properties of composites is structure. However, it is difficult to provide certain conditions for structure formation. For this purpose, it is poss…