ИЕ

Ирина Ерофеева

Russian Academy of Architecture and Construction Sciences

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ВЕ

Владимир Ерофеев

Moscow State University of Civil Engineering

Victor Afonin

National Research Mordovia State University

Denis Emelyanov

Schlumberger (British Virgin Islands)

МВ

М. В. Дорохин

N. I. Lobachevsky State University of Nizhny Novgorod

ПБ

П. Б. Демина

N. I. Lobachevsky State University of Nizhny Novgorod

I. N. Maksimova

Riga Stradiņš University

D A Svetlov

National Research Mordovia State University

ВИ

Владимир Иванович Калашников

Penza State University of Architecture and Construction

Tatiana Elchishcheva

Tambov State Technical University

ЕА

Е. А. Ланцев

N. I. Lobachevsky State University of Nizhny Novgorod

Cooperative Institutions

National Research Mordovia State University

N. I. Lobachevsky State University of Nizhny Novgorod

Yaroslav-the-Wise Novgorod State University

Russian Academy of Sciences

Institute of Physics and Technology

Saratov State University

Institute of Physics and Technology

Nizhny Novgorod State Pedagogical University

Russian Academy of Architecture and Construction Sciences

Belgorod State Technological University

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BIOLOGICAL STABILITY OF CARBONATE-SILICA COMPOSITES

Bulletin of Belgorod State Technological University named after V G Shukhov (2018)

Ирина Ерофеева Ирина Ерофеева

НИИ

10.12737/article_5b115a615b7740.81075577

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Citations (0)

Investigation of the initial stages of spark-plasma sintering of Si-Ge based thermoelectric materials

Nanosystems Physics Chemistry Mathematics (2018)

М. В. Дорохин Ирина Ерофеева Yu. M. Kuznetsov М. С. Болдин A. V. Boryakov

Thermoelectric materials based on a mixture of Ge-Si nanopowders were fabricated and investigated.The materials were obtained by spark plasma sintering technique using the modes corresponding to the initial stages of sintering of the powder particles.The possibility for controlling the electrical characteristics of materials (type and magnitude of conductivity, the Seebeck coefficient) by varying the sintering parameters was shown.It was found that the analysis of electrical characteristics allows one to draw conclusions about the degree of mixing for silicon and germanium in the sintered material.

Spark Plasma Sintering

SPARK (programming language)

10.17586/2220-8054-2018-9-5-622-630

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Citations (9)

SELECTION OF COMPOSITIONS OF DECORATIVE FINISHING POWDER-ACTIVATED CONCRETE WITH A GRAIN TEXTURE SURFACE BY RHEOLOGICAL PROPERTIES

Regional architecture and engineering (2022)

Владимир Ерофеев Yana Sanyagina Ирина Ерофеева I. N. Maksimova

Texture (cosmology)

10.54734/20722958_2022_3_16

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Citations (1)

CREATION OF HIGH-STRENGTH CONCRETE WITH IMPROVED BIOLOGICAL RESISTANCE INDICATORS BASED ON A COMPOSITE BINDER

Expert Theory and Practice (2021)

Denis Emelyanov Ирина Ерофеева Arslan Meretdurdyyevich Ahmedov Hasan Bahramovich Matyakubov

10.51608/26867818_2021_5_34

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Development of efficient compositions of hydrophobic materials resistant to chemical and biological environments

Journal of Infrastructure Preservation and Resilience (2024)

Salman Dawood Salman Al-Dulaimi Sofia Bazhenova Ирина Степина Ирина Ерофеева Victor Afonin

Abstract In harsh or corrosive environments, waterproofing is essential for ground-contact structures. Protecting underground structures against groundwater contamination and moisture by waterproofing the base material, usually solid concrete, is beneficial. Long-term insulation system performance depends on component integrity and base material interaction. This study uses a hydraulically modified binder and finely ground construction waste fillers. Optimizing sealant and restoration is the goal. Additionally, this study will explore the characteristics and establish a systematic approach for determining the appropriate waterproofing system composition. The study measures the physical force required to remove the insulating layer in order to assess the adhesive strength of the sealant coating. This paper explains the theoretical conditions that improve the adhesion of the base- sealant sealing layer. A conceptual framework explains the relationship between sealant material adhesive strength, modified binder composition, and base surface moisture content. Empirical testing has proven this model works. A comprehensive study examined how base surface roughness and cracks affect sealant coating performance. We know the ideal strength factors. This study uses global optimization to examine optimized parameters' roles. This study analyzed experimental data statistically and analytically. According to computational analysis and experimental validation, the sealant material has an adhesive strength of 3.8 MPa and a sealant layer strength of 36–37 MPa. This product requires 3.9% acrylic resin, 80 kg/m3 finely broken concrete debris, and 0.38–0.39% plasticizer. For these components, a base surface with 9.7% to 9.8% moisture is ideal.

Waterproofing

10.1186/s43065-024-00113-z

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Biological Resistance of Cement Composites Filled with Dolomite Powders

Materials science forum (2016)

Владимир Ерофеев Владимир Иванович Калашников Denis Emelyanov Elita Balathanova Ирина Ерофеева

In this article, we consider a method of producing biostable innovative materials in order to improve the biological resistance and durability of buildings and structures based on them. We present the results of the research work focused on the study of the cement composites bioresistance. Powders of milled quartz sand and dolomite were the fillers for the composites. Mathematical methods of experiments design allowed us to derive the dependences describing how the bioresistance coefficient, the elastic modulus and the water demand depend on the granulometric composition after 3 and 9 months of aging in the environment of filamentous fungi. We have found that the multifractional compositions have a higher bioresistance coefficient. We determined that dolomite significantly enhances bioresistance of the samples and Portland cement composites, filled with quartz sand and dolomite, are fungal resist.

10.4028/www.scientific.net/msf.871.33

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Citations (37)

Membranes from the Material Assuming Nonlinear Elastic Properties if Exposed to Aggressive Environment

IOP Conference Series Materials Science and Engineering (2021)

V V Erastov А. В. Ерастов Ирина Ерофеева A A Treshev Alexander Anatolyevich Bobryshev

Abstract The article considers the behavior of a membrane of an incompressible material under the influence of a two-sided diffusion fracture mechanism, which manifests itself in a change in the initial modulus of elasticity. The object of study is incompressible material membrane. The relationship between deformations and displacements was established in the framework of the nonlinear theory of elasticity in accordance with the Karman formalism. For the phenomenological model, the maximum tensile stresses arising in a nonlinear elastic membrane are obtained, depending on the level of aggressiveness of the medium and the intensity of the acting uniformly distributed load. The resulting solution reflects the operation of the membrane, taking into account the accumulation of defects affecting the stress state. Nonlinearity of the results is manifested to a greater extent as defects accumulate.

Elasticity

Nonlinear elasticity

Phenomenological model

10.1088/1757-899x/1079/6/062013

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Molecular dynamics studies on spark plasma sintering of Ge–Si based thermoelectric material

AIP Advances (2020)

Yu. M. Kuznetsov M. V. Bastrakova М. В. Дорохин Ирина Ерофеева П. Б. Демина

The development of new fabrication technologies for Ge–Si thermoelectric materials requires a corresponding theoretical description of physical processes lying behind the synthesis. In the present paper, we investigated the interdiffusion of Si and Ge atoms at the Ge/Si interface, which takes place during spark plasma sintering of Ge and Si powders for fabrication of thermoelectric bulk. The calculation was performed using numerical simulation based on the classical molecular dynamics method. The diffusion coefficients of Si in Ge and vice versa were found at sintering temperatures of 900 K–1300 K and an external pressure of 7 MPa. The calculation results were used to analyze the experimental data derived from the measurements of Ge and Si profiles at the interface of thin Ge/Si plates subjected to spark plasma sintering at the temperature of 1160 K (887 °C). The comparison of measured and calculated diffusion profiles has shown good agreement with one another.

Spark Plasma Sintering

SPARK (programming language)

10.1063/5.0011740

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Citations (8)

Fibre Chemistry (2001)

Ирина Ерофеева Zh. A. Marsel'I. N. Gorbacheva Т. В. Дружинина

Thermogravimetric analysis

Residue (chemistry)

10.1023/a:1013905125504

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