The Composition Cement Binder with the Use of the Synthesized Aluminosilicates

2014 ◽  
Vol 1022 ◽  
pp. 3-6 ◽  
Author(s):  
Valentina Ivanovna Loganina ◽  
Ludmila V. Makarova ◽  
Roman V. Tarasov ◽  
Ch.V. Zhegera
Keyword(s):  
Building Materials ◽  
Materials Science ◽  
Thermal Emission ◽  
Multiphase System ◽  
Material Structure ◽  
Cement Composites ◽  
Nanosized Particles ◽  
Cement Binder ◽  
Modern Building ◽  
Modifying Additive

The effectiveness of the use of the synthesizable aluminosilicates in cement composites as the modifying additive, regulating the structurization and increasing the operational properties of cement systems is investigated. Nature of change of the index рН of a liquid phase of cement systems with the use of the synthesized aluminosilicates is studied. The information about a thermal emission kinetics at hardening cement composites are provided. One of the priorities of the modern building materials science is the development of efficient building materials with the high operational properties. The solution of this problem base on purposeful formation of the material structure as heterogeneous, multiphase system of the complex hierarchy. One of the directions of properties management of this system is the modification of their structure by nanosized particles [1, 2, 3].

Modern Building Materials Using Waste from the Dismantling of Buildings and Structures

2019 ◽  
Vol 945 ◽  
pp. 1016-1023
Author(s):  
L.L. Maslennikova ◽  
N.A. Babak ◽  
I.A. Naginskii
Keyword(s):  
Building Materials ◽  
Mechanical Characteristics ◽  
State Standards ◽  
Crushed Stone ◽  
Thermal Methods ◽  
Ecological Evaluation ◽  
X Ray ◽  
Cement Binder ◽  
Use Efficiency ◽  
Modern Building

In this article the possibility of using construction waste (including waste of dismantling of buildings) when receiving building ceramics, heat-resistant materials based on liquid glass and materials based on natural hardening cement binder is considered. The purpose of study was development of building materials compositions made with using of secondary crushed stone screening HYPERLINK "https://www.multitran.ru/c/m.exe?t=2400068_1_2&s1=%EE%F2%F1%E5%E2" of dismantling of buildings for various purposes, which would suit all state standards. Also these materials would have some improved physical-mechanical characteristics and would be more eco-friendly. Optimum compositions of materials made with use of building mineral waste and physical-mechanical characteristics of received materials are given. For research of waste structure and synthesizable materials structure X-ray phase, differential-thermal methods of analysis and grain size measurements were used. The geological-ecological evaluation of secondary crushed stone screening use efficiency in developed technologies is given.

scholarly journals Application of statistical methods for solving problems of construction materials science

2020 ◽  
Vol 12 (6) ◽  
pp. 313-319
Author(s):  
A.D. Zhukov ◽  
E.U. Bobrova ◽  
I.V. Bessonov ◽  
A.A. Medvedev ◽  
B.A. Demissie
Keyword(s):  
Statistical Methods ◽  
Building Materials ◽  
Materials Science ◽  
Chemical Interaction ◽  
Construction Materials ◽  
Material Structure ◽  
Synthetic Fibers ◽  
Joint Influence ◽  
Entire Complex ◽  
Micro Level

In the areas of construction materials science, the most promising solution is a set of issues related to the study of the influence of conditions for the formation of the material structure, including the possibilities of its self-organization, on its properties. The chemical and physical aspects of this influence are studied at the micro level, using the entire complex of “subtle” studies. At the same time, there are methods that allow us to assess the possibility of nanoeffects in experiments carried out at the macro level: in production or in the laboratory. One of these methods is the method described in the article. The main provisions of the methodology have been formed on the basis of statistical methods for conducting experiments and studying technological processes. This technique can significantly reduce the number of experiments performed while maintaining the adequacy of the results obtained and makes it possible to perform further analytical optimization of the results and their engineering interpretation. In particular, application of this technique allows evaluating joint influence of various factors on the result, that makes it possible to identify synergistic and antagonistic effects and then test them at the micro level by studying the nanostructure of materials. The article, as an example, considers the technology of concrete, focused on the utilization of concrete scrap as a filler or filler in building materials for various purposes. The results of research on the development of composite binder compositions based on fine-ground concrete scrap waste, mineral binder, synthetic fibers and polymers cured as a result of chemical interaction with the components of the concrete mixture are presented. This binder can be used for making various wall elements of buildings.

scholarly journals Sound-Absorbing and Thermal-Insulating Properties of Cement Composite Based on Recycled Rubber from Waste Tires

2021 ◽  
Vol 11 (6) ◽  
pp. 2725
Author(s):  
Jakub Svoboda ◽  
Tomáš Dvorský ◽  
Vojtěch Václavík ◽  
Jakub Charvát ◽  
Kateřina Máčalová ◽  
...  
Keyword(s):  
Building Materials ◽  
Absorption Capacity ◽  
Acoustic Properties ◽  
Strength Characteristics ◽  
Cement Composites ◽  
Waste Tires ◽  
Natural Aggregate ◽  
Thermal Insulating ◽  
Recycled Rubber ◽  
Insulating Properties

This article describes an experimental study aimed at investigating the potential use of recycled rubber granulate from waste tires of fractions 0/1 and 1/3 mm in cement composites as a 100% replacement for natural aggregates. The use of waste in the development and production of new building materials represents an important aspect for the sustainability and protection of the environment. This article is focused on the sound-absorbing and thermal-insulating properties of experimental cement composites based on recycled rubber from waste tires. The article describes the grain characteristics of recycled rubber, sound absorption capacity, thermal conductivity and strength characteristics. The results of this research show that the total replacement of natural aggregate with recycled rubber in cement composites is possible. Replacing natural aggregate with recycled rubber has significantly improved the thermal and acoustic properties of the prepared cement composites, however, at the same time; there was also the expected decrease in the strength characteristics due to the elasticity of rubber.

scholarly journals The Influence of Cement Substitution by Biomass Fly Ash on the Polymer–Cement Composites Properties

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3079
Author(s):  
Beata Jaworska ◽  
Dominika Stańczak ◽  
Joanna Tarańska ◽  
Jerzy Jaworski
Keyword(s):  
Fly Ash ◽  
Building Materials ◽  
Raw Materials ◽  
Combustion Process ◽  
Biomass Combustion ◽  
Cement Composites ◽  
Cement Mortars ◽  
Mineral Additive ◽  
Biomass Fly Ash

The generation of energy for the needs of the population is currently a problem. In consideration of that, the biomass combustion process has started to be implemented as a new source of energy. The dynamic increase in the use of biomass for energy generation also resulted in the formation of waste in the form of fly ash. This paper presents an efficient way to manage this troublesome material in the polymer–cement composites (PCC), which have investigated to a lesser extent. The research outlined in this article consists of the characterization of biomass fly ash (BFA) as well as PCC containing this waste. The characteristics of PCC with BFA after 3, 7, 14, and 28 days of curing were analyzed. Our main findings are that biomass fly ash is suitable as a mineral additive in polymer–cement composites. The most interesting result is that the addition of biomass fly ash did not affect the rheological properties of the polymer–cement mortars, but it especially influenced its compressive strength. Most importantly, our findings can help prevent this byproduct from being placed in landfills, prevent the mining of new raw materials, and promote the manufacture of durable building materials.

REPORTS OF THE TSHA ISSUE 293 (PART I)

2021 ◽  
Author(s):  
L. V. Verzunova ◽  
Keyword(s):  
Information Technologies ◽  
Building Materials ◽  
Materials Science ◽  
Land Reclamation ◽  
Environmental Safety ◽  
Scientific Conference ◽  
Industrial Complex ◽  
Land Protection ◽  
Complex Development ◽  
Livestock Products

The collection includes articles based on the reports of scientists of the K. A. Timiryazev RGAU-MSHA, other universities and research institutions at the International Scientific Conference dedicated to the 155th anniversary of the K. A. Timiryazev RGAU-MSHA, which was held on December 2-4, 2020. The materials are presented on topical issues: land reclamation, reclamation, land protection and water supply, water resources management, hydraulic structures on hydro-reclamation systems; civil, industrial and agro-industrial construction, expertise and evaluation of industrial, civil buildings and building materials science; technosphere and environmental safety; reclamation and construction machines; information technologies in the agro-industrial complex; development of sheep and goat breeding in modern conditions; veterinary medicine and safety of livestock products, technologies for the production of feed and full nutrition of animals, biology, private zootechny; beekeeping and aquaculture.

scholarly journals Using scanned images to estimate salt formation on the surface of cement composites

Vestnik MGSU ◽  
2020 ◽  
pp. 1523-1533
Author(s):  
Vladimir T. Erofeev ◽  
Victor V. Afonin ◽  
Tatiana F. Elchishcheva ◽  
Marina M. Zotkina ◽  
Irina V. Erofeeva
Keyword(s):  
Building Materials ◽  
Control Sample ◽  
Cement Composite ◽  
Operating Conditions ◽  
Cement Composites ◽  
High Humidity ◽  
Grayscale Image ◽  
Salt Formation ◽  
Scanned Images ◽  
Composite Samples

Introduction. An engineering method is proposed for assessing salt formation on the surface of cement composites exposed to adverse operating conditions. The technique is based on the histogram method used to determine the dominant brightness of the half-tone image of scanned cement composites. The criterion for ranking composites is a relative dimensionless value –– a metric obtained by comparing the brightness of a grayscale image with the brightness level of white. Materials and methods. We selected three types of compositions of composites in the amount of 21 items; each of them contains three samples –– a control sample and samples exposed to high humidity and positive temperatures for 15 and 45 days. Each composition is represented by a scanned raster image of the sample surface. The images are further subjected to digital processing using a software program written in the C++ programming language and the OpenCV technical vision library. This allows you to use the available methods and classes to develop algorithms to solve the problem in question and to convert a full-color RGB image to a grayscale image. Such images are used to analyze histograms, which determine the dominant level of brightness to determine the numerical metric for quantifying the salt formation on the surface of cement composite samples on the basis of their scanned images. Results. A description of the software algorithm, used to detect salt formation on the surface of cement composite specimens that have passed performance tests under high humidity conditions at positive temperatures, is presented. The method of ranking cement composite samples using the values of their dominant brightness relative to the brightness of control samples is shown. The comparative analysis of the study is presented in the form of numerical data and explanatory diagrams. Conclusions. Software modeling is employed to demonstrate the expediency of the methodology for the assessment of salt formation on the surface of cement composites and other building materials prone to salt formation.

scholarly journals ANALYSIS OF THE INFLUENCE OF INDUSTRIAL WASTE IN THE FORM OF CERAMIC CHIPS CRUSHING DROPOUTS ON THE MAIN PROPERTIES OF CEMENT COMPOSITES

2021 ◽  
Vol 4 (1) ◽  
pp. 27-34
Author(s):  
S-A.Yu. Murtazaev ◽  
A. Uspanova ◽  
M. Hadzhiev ◽  
V. Hadisov
Keyword(s):  
Building Materials ◽  
Environmental Problem ◽  
Raw Materials ◽  
Housing Stock ◽  
Cement Composites ◽  
Optimal Composition ◽  
Ceramic Brick ◽  
Concrete Mixtures ◽  
Technogenic Raw Materials

during the implementation of the program to restore the housing stock of the Chechen Republic, as well as during the planned demolition of dilapidated housing, significant volumes of technogenic raw materials were generated, in particular, large volumes of brick and concrete scrap. Enterprises for the production of building materials and products also produce significant volumes of production defects, which accumulate over the years at landfills. Ceramic broken brick and broken brick dropouts are used to fill the roadbed, and the main part still goes to the dump and landfill, which is also an environmental problem. One of the promising ways to use dropouts and broken brick itself is to use them as secondary aggregates in concrete and mortars. This article discusses the issues of improving the quality of ceramic concrete mixtures, choosing the optimal composition and technology for mixing concrete mixtures using dust fractions of dropouts for crushing ceramic brick bricks

scholarly journals OBJECTS OF TRANSPORT INFRASTRUCTURE: EXPERIENCE OF SCIENTIFIC SUPPORT IN CONSTRUCTION WITHIN THE “QUALITY” CONCEPT IMPLEMENTATION

2019 ◽  
Vol 16 (5) ◽  
pp. 618-634
Author(s):  
I. S. Pulyaev ◽  
S. M. Pulyaev
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Concrete Structures ◽  
Economic Feasibility ◽  
Transport Infrastructure ◽  
Building Structures ◽  
Construction Technology ◽  
Scientific Support ◽  
Free Construction ◽  
Modern Building

Introduction. The paper deals with the issues related to the implementation of the “quality” concept in the construction of reinforced concrete transport facilities linked with the scientific support during design and construction. Nowadays this problem particularly relevant in the context of the modern construction solutions, combined with the need to obtain the required properties of concrete structures and ensure the economic feasibility of construction. The aim of the research is to generalize and systematize the main methods and techniques of concrete works, which minimize the defects and cracks while the construction of transport infrastructure.Materials and methods. On the example of different technologies used in the Russian construction over last 10 years, the authors demonstrated the developed methods of obtaining high quality concrete products taking into account tested and proved modern building materials.Results. The results of the research formed the basis of the projects, technological regulations for the production, specifications and standards of organizations, guidelines. Moreover, the results also allowed implementing the concept of “quality” in transport construction based on obtaining defect-free reinforced concrete structures with specified properties, taking into account the use of modern building materials.Discussion and conclusions. The research allows carrying out construction of various massiveness and extent. The obtained results form the basis of construction technology of other industrial and civil construction objects with reinforced concrete application. The paper is interesting and useful for specialists in providing defect-free construction of reinforced concrete building structures, for engineering and technical staff. The authors dedicate the research to the memory of Professor and Doctor of Technical Sciences, A.R. Solovyanchik (1938-2019).

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