RESEARCH OF PROPERTIES OF MULTI-COMPONENT FILLED ALKALINE ACTIVATION KNITTING SYSTEMS

2021 ◽  
Vol 93 (1) ◽  
pp. 114-124
Author(s):  
S-A. YU. MURTAZAEV ◽  
◽  
M. SH. SALAMANOVA ◽  
◽  
Keyword(s):  
Construction Industry ◽  
Building Materials ◽  
Raw Materials ◽  
Practical Importance ◽  
Cement Stone ◽  
Resource Potential ◽  
Alkaline Activation ◽  
Technological Processing ◽  
Alkaline Activator ◽  
Theoretical Foundations

The anthropogenic load on the planet’s natural resource potential is growing rapidly, therefore, special attention is paid to the development of less costly and low energy-intensive technologies for obtaining new building materials, the implementation of which does not require high-temperature and expensive technological processing, and will allow the use of local secondary and substandard raw materials. The development of formulations of clinker-free binders of alkaline activation based on fine powders of natural and technogenic origin will allow to obtain new effective building composites. The paper reveals issues related to the theoretical foundations of the formation of the structure and strength of cement stone based on an alkaline activator. The research results, in our opinion, undoubtedly are of practical importance for the construction industry, since the proposed recipes for clinker-free cements can replace expensive and energy-intensive Portland cement, allowing you to create strong and durable concrete and reinforced concrete structures.

scholarly journals FEATURES OF THE STRUCTURE FORMATION OF MULTICOMPONENT BINDING SYSTEMS OF ALKALINE ACTIVATION

2020 ◽  
pp. 51-58
Author(s):  
С-А. Ю. Муртазаев ◽  
М. Ш. Саламанова ◽  
Д. К-С. Батаев
Keyword(s):  
Portland Cement ◽  
Construction Industry ◽  
Practical Importance ◽  
Cement Stone ◽  
Reinforced Concrete Structures ◽  
Alkaline Activation ◽  
Fine Powders ◽  
Natural Aluminosilicate ◽  
Alkaline Activator ◽  
Theoretical Foundations

Разработка рецептур бесклинкерных вяжущих связок щелочной активации на основе тонкодисперсных порошков природного алюмосиликатного происхождения позволит получать новые эффективные строительные композиты. В работе раскрываются вопросы, связанные с теоретическими основами формирования структуры и прочности цементного камня на основе щелочного активатора. Результаты исследований, на наш взгляд, безусловно представляют практическую значимость для строительной отрасли, так как предлагаемые рецептуры бесклинкерных цементов способны заменить дорогой и энергоемкий портландцемент, позволяя создавать прочные и долговечные бетонные и железобетонные конструкции. The development of formulations of clinker-free binders of alkaline activation based on fine powders of natural aluminosilicate origin will make it possible to obtain new effective building composites. The paper reveals issues related to the theoretical foundations of the formation of the structure and strength of cement stone based on an alkaline activator. The research results, in our opinion, undoubtedly are of practical importance for the construction industry, since the proposed recipes for clinker-free cements can replace expensive and energy-intensive Portland cement, allowing you to create strong and durable concrete and reinforced concrete structures.

scholarly journals DEVELOPMENT OF SPECIAL RECIPES OF BINDING COMPOSITIONS WITH IMPROVED PROPERTIES

2020 ◽  
Vol 3 (4) ◽  
pp. 5-12
Author(s):  
M. Salamanova ◽  
M. Nahaev ◽  
B. Sarsenbaev
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Practical Importance ◽  
Metallurgical Industry ◽  
Cement Stone ◽  
Production Wastes ◽  
Technological Processing ◽  
Rotary Kilns ◽  
Artificial Stone ◽  
Theoretical Foundations

the ecological safety of earthly civilization suffers from the accumulation of huge volumes of industrial waste, the natural resource potential is decreasing, therefore, special attention is paid to the development of less costly and low energy-intensive technologies for obtaining new building materials, the implementation of which does not require high-temperature and expensive technological processing, and will allow the use of secondary and substandard raw materials. The work presents the results of the development of special formulations of binder compositions of alkaline activation based on cement production wastes in the form of aspiration and clinker dust from electrostatic precipitators of rotary kilns and waste from the metallurgical industry - ferrosilicon additives in the form of active silica, which will allow obtaining new building materials with improved properties. The paper investigates the properties of an alkaline cement paste and cement stone, reveals issues related to the theoretical foundations of the formation of the structure and strength of an artificial stone based on an alkaline activator. The research results, in our opinion, are certainly of practical importance for the construction industry, as the proposed formulations of clinker-free cements can partially replace expensive and energy-intensive Portland cement, making it possible to create strong and durable concrete and reinforced concrete structures

Recipes of Knitting Systems Alkaline Activation Using Natural Raw Materials of the Chechen Republic

2020 ◽  
Vol 1011 ◽  
pp. 1-7
Author(s):  
Madina Salamanova ◽  
Dena Bataev ◽  
Aminat Uzayeva ◽  
Zurab Gacayev
Keyword(s):  
Raw Materials ◽  
Practical Importance ◽  
Cement Stone ◽  
Russian Science ◽  
Unique Identifier ◽  
Federal Target Program ◽  
Energy Consuming ◽  
Scientific Project ◽  
Alkaline Activator ◽  
Theoretical Foundations

The alkaline clinker-free binders formulations activation development based on fine powders of aluminosilicate nature will allow to obtain the effective building composites. The paper reveals the issues related to the theoretical foundations of the cement stone structure and strength formation based on the alkaline activator. The research results, in our opinion, are undoubtedly of practical importance for the construction industry, since the proposed recipes for clinker-free cements will replace the expensive and energy-consuming Portland cement, allowing to create strong and durable concrete and reinforced concrete structures. The results presented in this article have been obtained in the framework of research on the implementation of scientific project No. 05. 607.21.0320. “Development of technology for new building composites on clinker-free alkaline binders using substandard natural and secondary raw materials” which received support from the federal target program “Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2014-2020”. The unique identifier for the agreement is RFMTFI60719X0320.

scholarly journals Bio-based construction materials for a sustainable future

2019 ◽  
Author(s):  
Rijk Block ◽  
Barbara Kuit ◽  
Torsten Schröder ◽  
Patrick Teuffel
Keyword(s):  
Construction Industry ◽  
Structural Engineering ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Flax Fibres ◽  
The Past ◽  
Natural Building ◽  
Paris Climate Agreement ◽  
Primary Materials

<p>The structural engineering community has a strong responsibility to contribute to a more efficient use of natural resources. Nowadays the construction industry is by far the most resource intense industry sector, approximately 40-50% of all primary raw materials are used, which raises the question about the architects and engineer’s accountability. In this context and as a result of the Paris Climate agreement the Dutch government defined the program “Nederland Circulair in 2050”, which states the ambition to use 50% less primary materials in 2030 and to have a full circular economy in 2050.</p><p>One possible approach to achieve these ambitious goals is the application of renewable, bio-based materials in the built environment and to replace traditional, typically cement-based, materials. Already in the past natural building materials, such as timber and bamboo have been used widely, but in recent years new materials came up and provide new opportunities to be used in the construction industry. The authors explored various alternatives, such as hemp and flax fibres, mycelium and lignin-based fibres for composite materials, which will be described with various experimental and realised case studies.</p>

Experimental Study of the Effect of Water Reducer on the Plaster Board Production in Low Energy-Consumed Way

2011 ◽  
Vol 250-253 ◽  
pp. 969-973
Author(s):  
Jing Sun ◽  
Xiao Hong Cong ◽  
Hong Bo Liu ◽  
Li Sun
Keyword(s):  
Construction Industry ◽  
Production Technology ◽  
Building Materials ◽  
Production Efficiency ◽  
Raw Materials ◽  
Green Building ◽  
Reducing Agent ◽  
Production Costs ◽  
Gypsum Board ◽  
Production Conditions

As a green building material, the demand for plaster board is growing with the promotion of the wall materials reform policy and development of the construction industry in China. In terms of its production technology, the technique formula of the raw materials for gypsum board is not only the main factors to determine the quality, but also determine the use of equipment related to production technology. In this paper, according to the actual production conditions of Beijing New Building Materials Group Industrial Park in Zhuozhou, water-reducing agent is introduced in its raw materials and specific researches are made about the properties of gypsum when water reducer, foam, coagulant agent and other additives are mixed. The results show that the suitable water-reducing agent used in conjunction with other gypsum admixtures not only improve the quality, but also play an important role in saving energy, improving production efficiency, and reducing production costs.

scholarly journals Radiological and physico-chemical characterization of red mud as an Al-containing precursor in inorganic binders for the building industry

2021 ◽  
Vol 36 (2) ◽  
pp. 182-191
Author(s):  
Ljiljana Kljajevic ◽  
Miljana Mirkovic ◽  
Sabina Dolenec ◽  
Katarina Ster ◽  
Mustafa Hadzalic ◽  
...  
Keyword(s):  
Construction Industry ◽  
Natural Radioactivity ◽  
Red Mud ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Polymerization Process ◽  
Alkali Activation ◽  
Silica Alumina ◽  
Alkali Activated

The potential re-use of red mud in the building and construction industry has been the subject of research of many scientists. The presented research is a contribution to the potential solution of this environmental issue through the synthesis of potential construction materials based on red mud. A promising way of recycling these secondary raw materials is the synthesis of alkali-activated binders or alkali activated materials. Alkali-activated materials or inorganic binders based on red mud are a new class of materials obtained by activation of inorganic precursors mainly constituted by silica, alumina and low content of calcium oxide. Since red mud contains radioactive elements like 226Ra and 232Th, this may be a problem for its further utilization. The content of naturally occurring radionuclides in manufactured material products with potential application in the building and construction industry is important from the standpoint of radiation protection. Gamma radiation of the primordial radionuclides, 40K and members of the uranium and thorium series, increases the external gamma dose rate. However, more and more precedence is being given to limiting the radiological dose originating from building materials on the population these days. The aim of this research was to investigate the possible influence of alkali activation-polymerization processes on the natural radioactivity of alkali activated materials synthesized by red mud (BOKSIT a. d. Milici, Zvornik, Bosnia and Herzegovina) and their structural properties. This research confirmed that during the polymerization process the natural radioactivity was reduced, and that the process of alkali activation of raw materials has an influence on natural radioactivity of synthesized materials.

scholarly journals Case Study: LCA Methodology Applied to Materials Management in a Brazilian Residential Construction Site

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
João de Lassio ◽  
Josué França ◽  
Kárida Espirito Santo ◽  
Assed Haddad
Keyword(s):  
Life Cycle ◽  
Construction Industry ◽  
Environmental Impacts ◽  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Ceramic Materials ◽  
Environmental Indicators ◽  
Life Cycle Thinking ◽  
Lca Methodology

The construction industry is increasingly concerned with improving the social, economic, and environmental indicators of sustainability. More than ever, the growing demand for construction materials reflects increased consumption of raw materials and energy, particularly during the phases of extraction, processing, and transportation of materials. This work aims to help decision-makers and to promote life cycle thinking in the construction industry. For this purpose, the life cycle assessment (LCA) methodology was chosen to analyze the environmental impacts of building materials used in the construction of a residence project in São Gonçalo, Rio de Janeiro, Brazil. The LCA methodology, based on ISO 14040 and ISO 14044 guidelines, is applied with available databases and the SimaPro program. As a result, this work shows that there is a substantial waste of nonrenewable energy, increasing global warming and harm to human health in this type of construction. This study also points out that, for this type of Brazilian construction, ceramic materials account for a high percentage of the mass of a total building and are thus responsible for the majority of environmental impacts.

scholarly journals Performance of Aggregate Incorporating Palm Oil Fuel Ash (Pofa) and Silt

2019 ◽  
Vol 9 (1) ◽  
pp. 1218-1223
Keyword(s):  
Specific Gravity ◽  
Water Absorption ◽  
Palm Oil ◽  
Building Materials ◽  
Raw Materials ◽  
Industrial Wastes ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Alkaline Activator ◽  
Oil Fuel

Depletion of natural aggregate has created more research to explore the utilization of industrial waste as alternative aggregate in concrete construction. The use of industrial wastes in making of artificial aggregate will lead to greener environment. In this study an attempt has been made to find the suitability of waste materials of palm oil fuel ash (POFA) and water treatment sludge as possible substitute for natural coarse aggregate. Specific gravity, water absorption, crushing strength and impact value have been tested for this mixture. Both raw materials were mixed with lime and alkaline activator. The artificial aggregate was air-cured at non-sintered temperature. Results show that the different mix proportions of the POFA to silt affected the performance of the artificial aggregate. Specific gravity and water absorption increased with the proportion of silt. Lightweight aggregate comprising silt combined with POFA and alkaline activator has the potential to produce a good performance of concrete. These benefits contribute to the production of energy-efficient building materials.

Structural Formation of a Clinkless Cement Binding Alkali Battery with Thermoactived Margel

2020 ◽  
Vol 1011 ◽  
pp. 8-13
Author(s):  
Madina Salamanova ◽  
S-A. Murtazayev ◽  
A. Alaskhanov ◽  
Zurab Gacayev
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Scientific School ◽  
Russian Science ◽  
Resource Saving ◽  
Resource Potential ◽  
Structural Formation ◽  
Federal Target Program ◽  
Energy Consuming ◽  
Scientific Project

Currently, construction volumes around the world are growing rapidly. Because of this fact the anthropogenic load on the natural resource potential of our planet is increasing, so special attention is paid to the development of less resource and energy-consuming technologies for building production, the development of new building composites based on the use of local secondary and substandard raw materials, the receipt of which high-temperature and expensive processing is not required. In this regard, the Grozny Scientific School of Energy and Resource Saving in the production of modern building materials has carried out the comprehensive studies to study the effectiveness of clinker-free alkaline binders as an alternative to traditional cement binders. The results presented in this article were obtained in the framework of the research on the implementation of scientific project No. 05. 607.21.0320. “Development of technology for new building composites on clinkerless alkaline binders using substandard natural and secondary raw materials” that received support from the federal target program “Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2014-2020”. Unique Agreement Identifier RFMTFI60719X0320

scholarly journals RADIATION CONTROL OF SECONDARY TECHNOGENIC RAW MATERIALS

2021 ◽  
Author(s):  
Maryna Сhyrkina ◽  
Evgen Slepuzhnikov ◽  
Serhii Shevchenko
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Natural Radionuclides ◽  
Great Influence ◽  
Environmental Safety ◽  
International Standards ◽  
Radiation Hazard ◽  
Design Stage ◽  
Technological Processing ◽  
Technogenic Raw Materials

Radiation safety is one of the most important hygienic criteria for environmental safety of a material. Great influence on man and his ecological safety are building materials, which contain substances with a certain content of natural radionuclides. Knowledge of the regularity of the distribution of natural radionuclides in the structure of man-made raw materials, as well as their behavior in the process of technological processing into building materials are very valuable. After all, even at the design stage, you can assess their content in the finished products and make timely adjustments to prevent recycling of building materials and protect human health. The authors assessed the radiation hazard of secondary man-made raw materials according to international standards and showed that slag samples are radiation-safe and can be used as a building material without any significant radiological threat to the population.

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