scholarly journals ANALYSIS OF THE EFFECT OF METHODS OF INTRODUCTION OF ORGANOMINERAL ADDITIVES INTO MORTARS ON FINE SANDS

2021 ◽  
Vol 4 (4) ◽  
pp. 32-40
Author(s):  
A. Uspanova ◽  
M. Hadzhiev ◽  
Z. Ismailov ◽  
I. Basnukaev
Keyword(s):  
Construction Projects ◽  
Building Materials ◽  
Raw Materials ◽  
Anthropogenic Activities ◽  
Mineralogical Composition ◽  
Environmental Safety ◽  
Technogenic Raw Materials ◽  
Technology Of Production ◽  
Natural Reserves

the use of technogenic raw materials in the production of building composites is an urgent direction in the technology of production of building materials in view of its economic efficiency, environmental effect and wide possibilities of their application. Recently, the issues of environmental safety in the production of building materials, the possibility of their processing and disposal have come to the fore. All this is dictated by the need for energy and resource conservation, the massive depletion of natural reserves and the progres-sive pollution of the environment due to anthropogenic activities. Construction composites provide ample opportunities for recycling of secondary raw materials, as their structure allows them to be used not only as a filler, but also in some cases as additives for regulating certain properties. More studied and widely used are ash and slag mixtures on the basis of which various organomineral additives are developed. So, on the territory of the Chechen Republic there are dumps of ash and slag mixtures, which, according to their chem-ical and mineralogical composition, are suitable for the design of organomineral additives and fillers in con-struction concretes and solutions. Building solutions are widely used for interior and exterior finishing works during the construction of construction projects in the Chechen Republic, which is characterized by high humidity in the winter, which provokes deformations of the plaster layer on facades. In this article, the de-velopment of an organomineral additive based on an ash-slag mixture is considered to improve the quality of mortar mixtures resistant to such conditions.

scholarly journals INFLUENCE OF THE METHOD OF INTRODUCING ORGANOMINERAL ADDITIVE IN CONSTRUCTION SOLUTIONS 

2019 ◽  
Author(s):  
Х-М. М. Вахажи ◽  
З.Х. Исмаилова ◽  
А.С. Успанова
Keyword(s):  
Natural Resources ◽  
Environmental Pollution ◽  
Building Materials ◽  
Raw Materials ◽  
Environmental Safety ◽  
Resource Conservation ◽  
Technogenic Raw Materials ◽  
Technology Of Production

Использование техногенного сырья в производстве строительных растворов является актуальным направлением в технологии производства строительных материалов. Экологическая безопасность производства строительных материалов, возможности их переработки и утилизации диктуется необходимостью энерго- ресурсосбережения, ограниченностью природных запасов и массовым загрязнением окружающей среды. The use of technogenic raw materials in the production of mortars is an urgent area in the technology of production of building materials. The environmental safety of the production of building materials, the possibility of their processing and disposal is dictated by the need for energy and resource conservation, limited natural resources and massive environmental pollution.

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 Environmentally friendly building materials for residential high-rise construction

2019 ◽  
Vol 91 ◽  
pp. 02008
Author(s):  
Ruben Kazaryan ◽  
Vitaly Khvan
Keyword(s):  
Construction Projects ◽  
Building Materials ◽  
Raw Materials ◽  
High Rise ◽  
Urgent Task ◽  
Building Systems ◽  
Technical Specifications ◽  
Near Future ◽  
Sufficient Strength

Materials, products and systems used as finishing of external surfaces and/or interior rooms when erecting or reconstructing buildings and structures should: protect the person in the room finished with these materials from the pathogenic effects of materials, products and building systems; if possible, do not exert pathological physiological and/or activity loads on people carrying out production or life activities in rooms finished with these materials and/or equipped with products and systems. As a result of the research, it was found that the source of 80% of the chemicals found in the air environment of the apartments is used construction and finishing materials. Currently, the quality of raw materials for building materials and the building materials and structures themselves are determined by GOST and Technical Specifications. A civil engineer is required to correctly select a material, product, or structure that has sufficient strength, reliability, and durability for specific conditions. Safe in themselves, finishing materials, products, and systems in the composition can acquire and demonstrate new properties. Therefore, the study of this problem is an urgent task of the near future and one of the directions of construction anthropotechnology, in particular, when implementing high-rise construction projects.

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.

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

Development of Mixture "Clay – Electro-Smelting Slag" for Ceramic Brick

2014 ◽  
Vol 682 ◽  
pp. 480-484 ◽  
Author(s):  
V.F. Torosyan ◽  
E.S. Torosyan
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Ceramic Brick ◽  
Ceramic Samples ◽  
Manufactured Products ◽  
Smelting Slag ◽  
Compression Resistance ◽  
Mixing Water ◽  
Melting Slag

Industrial transition to a totally new level of resources and energy saving necessitates improving the technical level of building materials manufacturing, growing their raw materials base, the assortment, enhancing the quality of manufactured products, cutting their cost price. It requires, first of all, carrying out more detailed research in properties of clay and clay loams, and selecting optimal additives for pottery works. Such disadvantages of clays as burning sensitivity, low compression resistance and flexural strength in a burnt state, low frost resistance cause the impossibility of their application without corrective additives. It is quite difficult to find an additive which can solve all the technological problems mentioned above. This paper provides the development of mixture "clay – electro-melting slag" for ceramic brick, moreover, addition of a steel-smelting slag in the fusion mixture results in the change in mixing water content of ceramic masses, strength and coloration of ceramic samples.

scholarly journals Physicochemical Properties of Handere Clays and Their Use as a Building Material

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yasin Erdoğan
Keyword(s):  
Physicochemical Properties ◽  
Building Materials ◽  
Raw Materials ◽  
Organic Matter Content ◽  
Volcanic Glass ◽  
Mineralogical Composition ◽  
Matter Content ◽  
Loss On Ignition ◽  
X Ray Diffraction ◽  
Clay Deposits

Handere clay deposits were discovered at Adana in Turkey. These clay units primarily consist of uncoloured claystone, pebbly sandstone, sandstone, siltstone, and mudstone marl and include gypsum lenses and clay levels of various thicknesses in places. The physicochemical properties of these clays have been investigated by different techniques including Scanning Electron and Elemental Analysis (SEM and EDS), mineralogical analyses, chemical and physical analyses, X-ray diffraction (XRD), thermogravimetric differential thermal analysis (TG-DTA), and Atterberg (Consistency) Limits Test. The mineralogical composition deduced from XRD is wide (smectite + palygorskite + illite ± feldspar ± chlorite ± quartz ± calcite ± serpentine) due to the high smectite contents (≈85%). SEM studies reveal that smectite minerals are composed of irregular platy leaves and show honeycomb pattern in the form of wavy leaves in places. The leaves presenting an array with surface edge contact are usually concentrated in the dissolution voids and fractures of volcanic glass. Organic matter content and loss on ignition analysis of raw materials are good for all the studied samples. In summary, Handere clays can be used as building materials in bricks, roof tiles, and cement and as a binder.

scholarly journals THE RISKS AND LIABILITY OF PARTICIPANTS OF A CONSTRUCTION PROCESS FOR DEFECTS OF BUILDING PRODUCTS

2004 ◽  
Vol 10 (3) ◽  
pp. 109-115 ◽  
Author(s):  
Sigitas Mitkus
Keyword(s):  
Construction Projects ◽  
Building Materials ◽  
Legal Regulation ◽  
The Other ◽  
Construction Process ◽  
Building Products ◽  
Construction Contracts ◽  
And Behavior ◽  
Mutual Agreement

Sharing of the risk and liability is one of the most important functions of construction contracts. Proper sharing of the risks and liability between the parties of construction contract has a rather big influence on efficiency, quality, and probability of arising disputes between the parties of construction contract in construction projects. A lot of risk exists during the fulfillment of construction projects. One of those risks is the risk of defects of building products. The question of the liability of the parties of construction contract for inappropriate quality of the construction production caused by a bad quality of building products mainly depends on sharing of the risk of defects of building materials in the construction contract. Some aspects of the mentioned risk and liability of the parties of the construction contract might be set by mutual agreement in the construction contract. The other aspects are regulated by imperative norms of the law and the parties of construction contract have not a right to change those imperative conditions of sharing of risks and liability. The article deals with sharing of risk and liability for supplying building products of an improper quality for construction, taking in to account conditions of construction contract, legal regulation and behavior of parties of a construction contract. A tree of forming the alternatives of liability is presented in the article. Liability for supply of defected building products arises not only for parties of a construction contract. The producer (supplier) of building products is responsible for this as well. Variations of liability of the producer (supplier) depending on construction contract conditions are analyzed. A matrix of liability of the producer (supplier) of building products is presented in the article.

Resource-Saving Technologies in the Thermal Insulation-Structural Foam Glass Production

2019 ◽  
Vol 974 ◽  
pp. 356-361
Author(s):  
O.V. Kuznetsova ◽  
N.D. Yatsenko ◽  
A.I. Subbotin ◽  
M.Yu. Klimenko
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Foam Glass ◽  
Scientific Research ◽  
Glass Production ◽  
Environmental Safety ◽  
Resource Saving ◽  
Structural Foam ◽  
Safety Requirements ◽  
Research Areas

The modern building materials market places high demands on heat-insulating and heat-insulating structural materials. In this connection, the issues of developing high-quality building materials obtained on the resource-saving technologies basis allowing to solve two interrelated problems are topical. The first problem is the industrial waste generated and existing stocks disposal. The second is associated with a decrease in the traditional raw materials deficit [1]. These problems solution, combining rational technological solutions, is based on the scientific research achievements in this area, in particular in the foam glass production. The priority scientific research areas in the foam glass materials production are the developments related to the study, the new raw materials use and the production of foam glass mixture compositions on their basis, which provide, along with the necessary performance properties, high environmental safety requirements [2, 3].

THE SELECTION OF BUILDING MATERIALS TO IMPROVE THE COMFORT AND ECOLOGICAL SAFETY OF CITY HOUSING

2015 ◽  
Vol 5 (4) ◽  
pp. 94-99 ◽  
Author(s):  
Anna Yur'evna ZHIGULINA ◽  
Natalya Genrikhovna CHUMACHENKO
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Residential Buildings ◽  
Construction Materials ◽  
Environmental Safety ◽  
Toxic Substances ◽  
Chemical Additives ◽  
Chemical Safety ◽  
Sources Of Pollution ◽  
Selection Of

The article is devoted to problems of creation of comfortable microclimate. Identifi es sources of pollution, completed their evaluation. Special att ention is paid to the selection of environmentally friendly building materials. In the production of building materials where toxic components can be industrial waste, replacing natural raw materials and chemical additives regulating the properties. In the operation of many building materials, especially those based on polymers, it is necessary to control the release of toxic substances resulting from degradation. For the assessment of comfort and environmental safety of housing is offered to create «Passports of residential buildings», which should be provided with information about construction materials used to evaluate this parameter, environmental home safety, including chemical safety as its component.

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