Hasil untuk "Systems of building construction. Including fireproof construction, concrete construction"

Tapani Hyttinen, Gianluca Paolini, Davide Emilio Quadrellaro

We investigate the relationship between the Eklof-Mekler-Shelah Construction Principle for a variety of algebras $\mathbf{V}$ and the question of superstability of the free objects in $\mathbf{V}$, denoted as $\mathcal{F}_\mathbf{V}$. We consider this question in the general setting of AEC-coverings of $\mathcal{F}_\mathbf{V}$, with applications to first-order logic and beyond. Our main result is that if a strong form of the Construction Principle is satisfied, then almost all AEC-covering of $\mathcal{F}_\mathbf{V}$ are unsuperstable. Concrete applications to $R$-modules and varieties of groups are also considered.

Nagat M. Zalhaf

Abstract High-performance concrete (HPC) is a new advanced building material for highway bridges, building construction, and repair/strengthen concrete structures with fire risk owing to its high fire resistance. The concrete composites should have interfacial bond strength (IBS) that is sufficient to transfer load between concrete components. When those composite structures are exposed to fire, horizontal cracks have been observed, and in some cases, the concrete layers have separated depending on the fire intensity. Therefore, the assessment of the IBS between the two concrete layers after exposure to fire is important for examining the entire fire behavior. Thus, the purpose of this work is to create an artificial neural network (ANN) model between statistically important factors and the IBS after exposure to elevated temperatures for using in the structural fire design of composite concrete layers. A total of 467 data points, including 252 data points from the slant shear test, 87 data points from the push-off test, and 128 data points from the tensile test, have been collected from literature reviews. Firstly, the independent parameters such as interfacial surface roughness, temperature exposure, part of the specimen exposed to temperature, type of concrete overlay, and fiber content introduced in the concrete overlay were carefully analyzed to identify the statistically important parameters and their impact on the IBS. Secondly, a designed ANN model has been developed to predict the IBS based on the type of test technique, interfacial surface roughness, temperature exposure, type of concrete overlay, and fiber content. Moreover, a mathematical model has been proposed to predict the IBS between concrete substrate and HPC after exposure to elevated temperature. Finally, the predicted IBS from the design ANN model and the mathematical IBS were compared with the available empirical models from literature. The outcome results demonstrated that the design ANN model was able to predict the IBS between two concrete layers after exposure to elevated temperatures with a coefficient of determination R 2 of 0.97, while the mathematical IBS gave a good accuracy for predicting the IBS in the case of the interface under combined stress with R 2 equal to 0.90. This study effectively bridges the gaps in both theoretical and experimental findings by integrating ANN models with advanced computational techniques and robust statistical analyses. This multifaceted approach not only enriches our understanding of the topic, but also provides more precise insights and predictive capabilities.

Hyeon-Jin Lim, Chang-Geun Cho, Sun-Ju Lee et al.

Abstract To reduce carbon emissions in the construction industry, this study attempted to manufacture alkali-activated slag fiber composites (ASFC) without using cement. Synthetic fibers were incorporated into the alkali-activated slag (AAS) binder, and the mechanical properties of ASFC were evaluated through tests on fresh mixture, compressive strength, and direct tensile behavior. The fresh ASFC showed excellent workability with sufficient slump flow, and its 28-day compressive strength averaged 33.7 MPa. In tensile behavior, ASFC exhibited a strain-hardening response with multiple microcracks, similar to cement-based SHCC, with an ultimate tensile strain of approximately 3–5%. Compared with SHCC, ASFC showed slightly lower first cracking stress and tensile strength, but higher ductility. To assess structural performance, reinforced ASFC wall specimens were tested under in-plane lateral loads and compared with conventional RC and SHCC walls. Reinforcing bars were arranged according to both standard design and minimum reinforcement ratios. ASFC walls showed up to 81.9% and 80.6% higher load capacities than RC walls under standard and minimum reinforcement, respectively. Although RC walls failed due to localized cracks, ASFC walls formed widely distributed microcracks controlled by fiber bridging, improving ductility and delaying failure. These results demonstrate that ASFC, without cement, exhibits compressive strength comparable to concrete and superior tensile ductility. Its application in structural walls can enhance resistance to bending and shear cracks while improving overall load-bearing capacity, making it a promising sustainable material.

Pedro Paulo Martins de Carvalho, Rodrigo de Melo Lameiras

Abstract The knowledge of post-cracking tensile behavior is crucial for the proper use of Fiber-Reinforced Concrete (FRC) in engineering. Although various tests are used to determine FRC’s Mode I fracture behavior, each has its limitations in accurately predicting how FRC performs in real-world structures. This underscores the need for further research in this area. The different test methods examined have specific details that can significantly affect results, such as differences in tools, sample sizes and shapes, notch types, and how loads are applied. This paper thoroughly reviews these test methods and discusses their specific characteristics to evaluate FRC’s post-cracking behavior. It also explores the inverse analyses procedures for estimating direct tensile behavior from indirect tests and compares results from different test methods.

Choonghyun Kang, Sungnam Hong, Yongmyung Park et al.

Abstract Polyvinyl alcohol (PVA) is a nontoxic, biodegradable, water-soluble polymer used in various fields. The use of PVA in concrete has been limited due to problems such as initial setting delay, early age strength reduction, and decreased mechanical and durability performance caused by the generation of microbubbles. This study aims to verify the performance and effectiveness of PVA as a foaming agent by reversely utilizing the microbubble generation phenomenon of PVA, which has been recognized as a problem. In addition, the production and characteristics of ultra-light foamed concrete were evaluated using perlite (PL). PVA solutions with concentrations of 2.5% and 5.0% were considered. PL ratios of 10% (P1), 20% (P2), 30% (P3), and 40% (P4) were applied to the mass of the PVA solution. The mass of PVA solution (s), OPC (c), and PL considered in the experiment were classified into s/c, s/PL, PL/c, and s/(c + PL), respectively, and the optimal mixing ratio was presented based on the experimental results. In addition, a new high-temperature-curing method was applied that combines high-temperature wet curing (60 °C, relative humidity 90% or higher) and high-temperature dry curing (105 ± 5 °C) to improve the strength reduction problem at the early age and to increase the pore expansion effect. In addition, thermal analysis (TG/DTA), X-ray diffeaction (XRD), and Fourier transform infrared spectroscopy (FT-IR) were applied to analyze the hydration reaction products. The formed pores were imaged from the cross-section of each sample using an optical microscope, and the pore size was measured using image-processing software. The experimental results proved that PVA is a sufficiently effective material as a foaming agent for manufacturing foamed concrete in a high-temperature-curing environment. PVA showed a synergistic effect in expanding pores and increasing porosity, and PL improved insulation and lightweight. The manufactured ultralight foam concrete had a density of less than 1.0 g/cm3, a strength of 1–6 MPa, and a thermal conductivity of 0.13–0.19 W/m∙K. The appropriate mixing ratios within the range considered in this study were s/PL ratio of 5–3.33, PL/c ratio of 0.2–0.45, and s/(c + PL) ratio of 0.77–1.25.

Qingzhang Zhang, Mengzhe Zhao, Li Song et al.

Abstract The changes of the microscopic pore structure for concrete under cyclic axial compression accelerate chloride-ion penetration, reducing the durability of concrete structures. To address this, a chloride-ion migration experiment for concrete was conducted under cyclic axial compression, and the pore structure and pore group content of concrete were quantitatively characterized through equilibrium moisture content testing. In addition, a multiscale theoretical model for the chloride-ion diffusion coefficient in concrete was established based on the multiphase sphere model. The results show that cyclic loading forms an open hysteresis loop in the concrete's stress–strain curve, which evolves in the direction of increasing strain. Under loading, the microscopic pore structure of concrete coarsens, with an increase in the proportion of large capillary pores and gel pores, and a decrease in the proportion of small capillary pores. The model demonstrates good applicability when the chloride-ion diffusion coefficient is less than 22 × 10–12 m2/s. The model analysis indicates that the influence of cyclic axial compression loading on chloride-ion diffusion coefficient is more pronounced when the initial porosity ranges from 0.1 to 0.3. In addition, the more complex the microstructure of the concrete, the less its chloride-ion diffusion coefficient is affected by load-induced damage. At the same DI/Dm ratio, Dc/Dm gradually decreases with increase the volume fraction of coarse aggregates, but when DI/Dm reaches 15, the variation of Dc/Dm becomes negligible, approximately equal to 0.86. This indicates that when the ITZ exhibits a higher porosity content, the increased availability of chloride-ion transport pathways counteracts the blocking effect of coarse aggregates on chloride ions.

Zichang Ren, Yuping Zhao

Classical source polar codes require the construction of frozen sets for given sources. While this scheme offers excellent theoretical performance, it faces challenges in practical data compression systems, including sensitivity to the accuracy and computational complexity of the construction algorithm. In this letter, we explore the feasibility of construction-free polar compression schemes. By optimally selecting output symbols based on the decoder's behavior, the proposed scheme not only enhances flexibility but also achieves significant improvements in compression rates. Several enhancements are introduced to facilitate the practical implementation of the proposed scheme. Numerical results demonstrate the superior performance compared to existing polar compression approaches.

Mattias Linde, Daniel Lindmark, Sandra Ålstig et al.

We present a simulation framework for lunar construction work involving multiple autonomous machines. The framework supports modelling of construction scenarios and autonomy solutions, execution of the scenarios in simulation, and analysis of work time and energy consumption throughout the construction project. The simulations are based on physics-based models for contacting multibody dynamics and deformable terrain, including vehicle-soil interaction forces and soil flow in real time. A behaviour tree manages the operational logic and error handling, which enables the representation of complex behaviours through a discrete set of simpler tasks in a modular hierarchical structure. High-level decision-making is separated from lower-level control algorithms, with the two connected via ROS2. Excavation movements are controlled through inverse kinematics and tracking controllers. The framework is tested and demonstrated on two different lunar construction scenarios that involve an excavator and dump truck with actively controlled articulated crawlers.

Vitaly I. Sibirko, Tatyana A. Chechetina, Valentina S. Goncharenko et al.

There are considered the statistical data on fires and their consequences (number of fires, number of fire deaths and injures, direct material damage) which sources were various types of electrical products and devices. Absolute, fractional and relative values (per number of fires) were analyzed. There were compared the values of indicators of the situation with fires, which sources were electric switchboards, with the average Russian values and values corresponding to fires from electrical equipment. There are concluded the need to equip switchboards with fire protection systems taking into account the obtained data.

Dhiman Basu, Sheikh Mayesser Mushtaq, Shivani Sharma et al.

Abstract The mix design of concrete is an important aspect that affects its strength and durability. This paper aims to revisit the existing mix design method given in IS 10262:2019 through a capacity-based approach. The approach involves identifying the possible failure modes in concrete and eliminating the undesirable ones leading to significant reduction in dispersion. This is accomplished by utilizing coarse aggregates that meet a specific minimum strength requirement or threshold (e.g., ~ 77 MPa for M95 grade of concrete), which is determined through a priori estimating the cohesion and friction angle of the concrete. The methodology to estimate the cohesion and friction angle from a single unconfined compression test is proposed based on the Mohr–Coulomb theory and using the orientation of failure plane of fractured specimen as a supplemental information from the same experiment. This paper also offers a simple and approximate test procedure to estimate the aggregate's compressive strength (~ 106 MPa in this mix design) reasonably which is essential for the capacity-based mix design. An experimental programme is also carried out to design the concrete mix using the proposed capacity-based approach. The results indicate that M95 concrete is achieved with a low standard deviation and coefficient of variation (~ 3%), falling in class of excellent quality control as per ACI 214R-11. This quality control is crucial in seismic structural design as variations in concrete strength is likely to negate the underlying principle of strong column–weak beam philosophy resulting in the triggering of undesirable shear modes of failure.

Ngoc Hieu Dinh, Seung-Hee Kim, Kyoung-Kyu Choi

Abstract The current KDS 14 design method yields reasonable accuracy with acceptable safety in assessing the unbalanced moment-carrying capacity of slab–column connections. However, the model requires considerable computational effort owing to the effects of various design parameters, particularly the gravity-load effect. This study proposes a method to simplify the KDS 14 model to evaluate the unbalanced moment-carrying capacity of slab–column connections. In the proposed method, the gravity-load effect is decoupled from equations used for evaluating unbalanced moment-carrying capacity components. Subsequently, the total unbalanced moment-carrying capacity is determined by establishing an interaction between the gravity shear ratio and unbalanced moment components without considering the gravity-load effect. For practical design purposes, final simplified design equations are proposed. The reliability of the simplified method is validated based on a comparison with the current KDS 14 design code using a comprehensive database encompassing interior, exterior, and corner slab–column connections. Furthermore, a parametric study based on the proposed simplified approach, current design codes, combined with finite-element (FE) analysis is performed to elucidate the effects of constituents on the unbalanced moment-carrying capacity of corner slab–column connections. The results show that the proposed simplified model and KDS design method are strongly correlated with the experimental and FE results for a range of design parameters. Meanwhile, the ACI 318 model consistently provides a lower limit for strength prediction, thus yielding overly conservative and safe results compared with the test and FE results in most cases.

Tadese Birlie Mekonen, Temesgen Ejigu Alene, Yared Aklilu Alem et al.

Abstract Amidst the global pursuit of sustainable alternatives in concrete production, this study explores the viability of incorporating by-products or waste materials as aggregates to support the concrete construction industry, with a specific emphasis on steel slag. The objective of this study is to evaluate the effectiveness of steel slag as a partial replacement for fine and coarse aggregates in concrete production. The experiment involved casting 30 cubes and 10 beams, replacing fine aggregate from 0 to 60%. Flexural and compressive strength tests at 7 and 28 days followed the ACI method. Results revealed that a 30% replacement of fine aggregate with steel slag led to higher compressive strength at both 7 and 28 days, while a 45% replacement showed superior flexural strength at 28 days. Further chemical analysis and optimization are recommended for deeper insights. The study concludes with marginal improvements in compressive and flexural strength with steel slag partial replacement, identifying 30% for fine aggregate and 45% for coarse aggregate as optimal replacements. In addition, the mineral composition of steel slag exhibits significant variability, with compounds, including silicon dioxide (SiO2), iron oxide (Fe2O3), manganese oxide (MnO), aluminum oxide (Al2O3), and calcium oxide (CaO). Chemical analysis indicates high silicate content and minimal alkali content, contributing to enhanced strength during concreting. Higher steel slag replacement reduces workability, confirmed by slump tests. However, all mixes maintain a true slump, and unit weight increases with steel slag aggregate replacement. Compressive strength improves incrementally with higher steel slag content, echoing prior research. In addition, flexural strength rises with steel slag replacing both coarse and fine aggregates, suggesting enhanced performance in reinforced concrete structures. These findings highlight steel slag’s potential as a sustainable alternative in concrete production, aiming to advance its application in the construction industry, promoting environmental sustainability and economic viability.

A. Prokopov, N. A. Adoniev

Introduction. During design, construction and operation of buildings and structures in the coastal areas there arises a serious problem of engineering protection of coasts and hillslopes from the dangerous geological processes, which include the coastal erosion, underflooding of territories, hillslope erosion, gravitational (slope) processes, such as intensification of landslides, etc. These processes often result in significant economic damage usually related to the non-recoverable loss of valuable coastal territories, deformation of buildings and structures, damage and destruction of the objects of transport and engineering infrastructure. In this regard, the study of the advanced foreign experience in engineering protection of the coastal areas and the evaluation of the possibility of it to be implemented in Russia is a relevant scientific and engineering task.Materials and methods. To prepare the review, the following data was used: field observation data with photographic evidences of the objects of engineering protection of seashores and hillslopes obtained by the authors during a business trip to the People's Republic of China (PRC) in October–November 2023; study and analysis of literature sources in the subject area, including the methods and technologies implemented in the Netherlands, Japan, the USA, Great Britain, Italy; summary and systematisation of the coastal protection methods for further development of their classification and evaluation of the possibility of implementing thereof in the Russian Federation.Research results. The main principles of design, the advanced methods and technologies of coastal protection used in China have been defined. They include: construction of the multi-level protective structures, such as the multiple-row breakwaters of special shape in combination with the stepped retaining walls, the vertical walls consisting of the driven piles, anchoring and spray-concrete covering of the slopes in combination with the metal meshes; terracing in combination with the retaining reinforced concrete (horizontal and vertical) crossbeams; the sloping wave-absorbing reinforced concrete surfaces;  the meshy structures and fences combating the Aeolian processes, etc.The main methods used in the Netherlands, Japan, the USA and Italy for comprehensive protection of the large territories have been defined. Such as: the network of dams, weirs, wave breakers, coast paving, regulation of the flows by water locks and barriers, creation of the artificial protective islands; artificial replenishment with sand; creation of the green spaces along the coast; forming the dunes — natural or artificial hills of sand or pebbles located along the coast; creation of the concrete structures, stone jetties, floating constructions and even artificial reefs.The importance of management was emphasised, including the early warning systems for storms and tsunamis, weather and marine condition monitoring systems, as well as dissemination of the warning messages and evacuation plans among the population in the areas of potential threat.Discussion and conclusion. Based on the results of the review, the main conclusions were formulated. The recommendations were given on the possible ways of improving the coastal protection of the Caucasian Black Sea Coast and other coastal areas of the Russian Federation based on the advanced foreign experience.

Matjaž Omladič, Nik Stopar

The main goal of this paper is to study the extent of freedom one has in constructing quasi-copulas vs. copulas. Specifically, it exhibits three construction methods for quasi-copulas based on recent developments: a representation of multivariate quasi-copulas by means of infima and suprema of copulas, an extension of a classical result on shuffles of min to the setting of quasi-copulas, and a construction method for quasi-copulas obeying a given signed mass pattern on a patch.

Andrew Tanggara, Mile Gu, Kishor Bharti

Dynamical quantum error-correcting codes (QECC) offer wider possibilities in how one can protect logical quantum information from noise and perform fault-tolerant quantum computation compared to static QECCs. A family of dynamical QECCs called the ``Floquet codes'' consists of a periodic sequence of two-body measurements that enables error-correction on many-body systems, relaxing hardware implementation requirements and improving error-correction reliability. Existing results on Floquet codes has been focused on qubits, two-level quantum systems, with very little attention given on higher dimensional quantum systems, or qudits. We bridge this gap by proposing a simple, yet general construction of qudit Floquet codes based on a simple set of conditions on the sequence two-body measurements defining the code. Moreover, this construction applies to a large family of configurations of qudits on the vertices of a three-colorable lattice which connectivity represented by the edges. We show that this construction includes the existing constructions of both qubit and qudit Floquet codes as special cases. In addition, any qudit Floquet code obtained by our construction achieves a rate of encoded logical qudits over physical qudits approaching $\frac{1}{2}$ as the number of physical qudits in total and on the faces of the lattice grows larger, as opposed to vanishing rate in existing qudit Floquet code constructions.

Roberta Anna Iseppi

This article presents how the BV formalism naturally inserts in the framework of noncommutative geometry for gauge theories induced by finite spectral triples. Reaching this goal entails that not only all the steps of the BV construction, from the introduction of ghost/anti-ghost fields to the construction of the BRST complex, can be expressed using noncommutative geometric objects, but also that the method to go from one step in the construction to the next one has an intrinsically noncommutative geometric nature. Moreover, we prove that both the classical BV and BRST complexes coincide with another cohomological theory, naturally appearing in noncommutative geometry: the Hochschild complex of a coalgebra. The construction is presented in detail for $U(n)$-gauge theories induced by spectral triples on the algebra $M_n(\mathbb{C})$.

Matteo Capucci, Bruno Gavranović, Abdullah Malik et al.

Categories of lenses/optics and Dialectica categories are both comprised of bidirectional morphisms of basically the same form. In this work we show how they can be considered a special case of an overarching fibrational construction, generalizing Hofstra's construction of Dialectica fibrations and Spivak's construction of generalized lenses. This construction turns a tower of Grothendieck fibrations into another tower of fibrations by iteratively twisting each of the components, using the opposite fibration construction.

M. Refaie, Alaa Mohsen, El-Sayed A. R. Nasr et al.

Abstract One-part alkali-activated materials (OP-AAM) have become a promising binder with low carbon and energy requirements associated with superior mechanical and durability characteristics. This study aims to employ commercial superplasticizers (naphthalene-based “Nb-SP” and polycarboxylate-based “PCb-SP”), as well as laboratory-prepared one (phenol–formaldehyde sulfanilate “PFS-SP”) in enhancing the properties of OP-AAM. The main problem of superplasticizers (SPs) in the AAM is their hydrolysis in the alkaline activator (NaOH) used in the activation reactions. Therefore, the thermo-chemical treatment process was utilized to mitigate the high activator alkalinity by impeding the NaOH in the aluminosilicate precursor matrix. The OP-AAM was fabricated from thermo-chemical treatment powder (TCT-P) resulting from sintering blast furnace slag (GGBFS) with 10 wt% NaOH at 300 and 500 °C. The XRD-pattern showed that NaOH was impeded in the GGBFS via sodium aluminum silicate phase formation after sintering at 500 °C. The results showed that the admixed OP-AAM prepared from TCT-P at 500 °C greatly enhanced the workability and mechanical properties. The PFS-SP proved its efficiency in improving the properties of OP-AAM prepared TCT-P at 300 and 500 °C, referring to its high stability in an alkaline medium. While PCb-SP reinforced the properties of OP-AAM prepared from TCT-P at 500 °C only, proving that PCb-SP promotes high capability in TCT-P-500 as well as in Portland cement.

Prashnna Ghimire, Kyungki Kim, Manoj Acharya

In the last decade, despite rapid advancements in artificial intelligence (AI) transforming many industry practices, construction largely lags in adoption. Recently, the emergence and rapid adoption of advanced large language models (LLM) like OpenAI's GPT, Google's PaLM, and Meta's Llama have shown great potential and sparked considerable global interest. However, the current surge lacks a study investigating the opportunities and challenges of implementing Generative AI (GenAI) in the construction sector, creating a critical knowledge gap for researchers and practitioners. This underlines the necessity to explore the prospects and complexities of GenAI integration. Bridging this gap is fundamental to optimizing GenAI's early-stage adoption within the construction sector. Given GenAI's unprecedented capabilities to generate human-like content based on learning from existing content, we reflect on two guiding questions: What will the future bring for GenAI in the construction industry? What are the potential opportunities and challenges in implementing GenAI in the construction industry? This study delves into reflected perception in literature, analyzes the industry perception using programming-based word cloud and frequency analysis, and integrates authors' opinions to answer these questions. This paper recommends a conceptual GenAI implementation framework, provides practical recommendations, summarizes future research questions, and builds foundational literature to foster subsequent research expansion in GenAI within the construction and its allied architecture & engineering domains.

Надежда Александровна Трофимова, Ольга Григорьевна Щитова

Введение. В настоящее время все больший интерес лингвистов привлекает изучение терминологии профессиональных подъязыков с точки зрения когнитивного подхода. Особую актуальность приобретает когнитивно-фреймовое моделирование терминосистем как эффективный способ представления терминологии специального подъязыка. Цель работы состоит в построении и описании когнитивно-фреймовой модели терминосистемы предметной области «Строительные материалы» в современном русском языке.Материал и методы. Материалом для исследования послужили терминологические единицы предметной области «Строительные материалы», выделенные из лексикографических источников по строительству, нормативных документов, научных работ, коммерческих каталогов строительной продукции и профессиональных интернет-сайтов, посвященных строительству. В основе методологии исследования лежат общенаучные и лингвистические приемы описательного и сравнительно-сопоставительного методов исследования, в том числе приемы лингвистического моделирования, фреймовый, дефиниционный, оппозитивный и количественный анализ.Результаты и обсуждение. Определены главные понятия фреймового подхода к изучению терминологии. Представлена теоретическая база и трактовка понятия фрейм, разработана структура фрейма, принятая в данном исследовании. Представлена фреймовая модель терминосистемы профессиональной сферы «Строительные материалы» в русском языке. Определены основные субфреймы данной сферы: «Древесные материалы», «Керамические материалы», «Каменные материалы», «Стеклянные материалы и изделия», «Металлические материалы и изделия», «Цементы», «Бетоны», «Строительные смеси», «Вяжущие вещества и материалы на их основе», «Полимерные материалы», «Изоляционные материалы», «Кровельные материалы», «Отделочные материалы»; выявлена иерархическая фреймовая структура анализируемой предметной области, состоящая из 13 субфреймов с последующим делением их на слоты, микрослоты и семантические группы. Приведена характеристика субфрейма «Древесные материалы» и микрослота «Композиционные древесные материалы», а также входящих в его состав семантических групп. Выявлены различные типы семантических отношений между терминами, репрезентирующими когнитивно-фреймовую модель терминосистемы «Строительные материалы». Заключение. Когнитивно-фреймовая модель терминосистемы «Строительные материалы» позволяет представить иерархически организованную и репрезентированную в языке систему знаний о данной предметной области и выявить отношения между компонентами терминосистемы. Представленный фрагмент фреймовой модели иллюстрирует внутрисистемные связи вербализующих ее терминов. Полученные результаты представляют интерес для терминоведения и могут быть использованы в вузовской и лексикографической практиках. Introduction. Nowadays linguists are increasingly interested in studying the terminology of professional sublanguages from the point of view of a cognitive approach. Cognitive frame modeling of terminology systems is becoming relevant being an effective way of representing the terminology of a special sublanguage.The aim of the work is to create and describe the cognitive frame model of the terminological system of the subject area “Building materials” in modern Russian.Material and methods. The material for the study is the terminological units of the subject area “Building materials”, selected from lexicographic sources on construction, regulatory documents, scientific papers, commercial catalogues of construction products, and professional internet websites about construction. The research methodology is based on general scientific and linguistic methods of descriptive and comparative research methods, including methods of linguistic modeling, framing, definitional, oppositional analysis as well as quantitative analysis.Results and discussion. The article identifies the main concepts of the frame approach to the study of terminology. The theoretical basis and interpretation of the concept of frame are presented, the frame structure used in this paper is developed. The work presents the frame model of the term system of the professional sphere “Building materials” in Russian. The paper defines the main subframes of this field: “Wood Materials”, “Ceramic Materials”, “Stone Materials”, “Glass Materials”, “Metal Materials”, “Cement”, “Concrete”, “Construction Mixes”, “Binders and Materials”, “Polymer Materials”, “Isolation Materials”, “Roofing Materials”, “Finishing Materials”. The analysis reveals the hierarchical frame structure, consisting of 13 subframes with their subsequent division into slots, micro-slots, and semantic groups. The study presents a detailed description of the subframe “Wood Materials” and the micro-slot “Composite Wood Materials” as well as semantic groups that are part of them. Various types of semantic relations between the terms representing the cognitive-frame model of the term system “Building materials” are revealed.Conclusion. The cognitive-frame model of the term system “Building materials” allows to present a hierarchically organized system of knowledge about a given subject area in a structured form and to identify system relations between the components of the term system. The presented fragment of the frame model illustrates the intra-system relations of the terms that verbalize it. The results obtained are of interest for terminology studies and can be used for educational and lexicographic purposes.