Building materials based on manmade waste of the mining industry and solid fuel energy – An environmental trend of the modern time

2021 ◽  
pp. 95-98
Author(s):  
Yu. I. Razorenov ◽  
E. A. Yatsenko ◽  
B. M. Goltsman
Keyword(s):  
Solid Fuel ◽  
Building Materials ◽  
Mining Industry ◽  
Modern Time

Development of Sustainable Alternative Building Materials from Quarry Dust

2018 ◽  
Vol 761 ◽  
pp. 181-188
Author(s):  
Ehud Cohen ◽  
Gabriela Bar Nes ◽  
Alva Peled
Keyword(s):  
Fly Ash ◽  
Building Material ◽  
Building Materials ◽  
Waste Product ◽  
Mining Industry ◽  
Chemical Properties ◽  
High Volume ◽  
Waste Products ◽  
Quarry Dust ◽  
And Chemical Properties

The main goal of our work is to develop an alternative building material based on “zero waste” objective, thus creating commercially valuable products from materials that are otherwise high-volume waste products. Fine dolomitic quarry dust is a waste product manufactured in several millions of cubic tons each year in the mining industry of Israel. Our study examines a sustainable and useful solution to use this quarry dust (QD) as a part of fly ash based geopolymeric systems. Mechanical, thermal and chemical properties were examined and analyzed.

scholarly journals Mixed magnesian binders using local silicate waste production

2021 ◽  
Vol 2131 (4) ◽  
pp. 042035
Author(s):  
E Lytkina
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Mining Industry ◽  
Raw Material ◽  
Similar Process ◽  
Environmental Aspect ◽  
Waste Production ◽  
Material Component ◽  
Additional Processing ◽  
Technogenic Raw Materials

Abstract Today, the waste of the mining industry is more than 8 billion tons. Analysis of the literature data showed that most of the man-made waste that is generated as a result of the development of mineral deposits is suitable for use in many industries, in particular, in the production of building materials. The use of technogenic raw materials allows us to solve the following tasks: Environmental aspect - reducing the number of dumps and reducing their volumes. And this, in turn, improves the ecology of regions and territories. 2. Economic aspect - reducing the cost of construction products through the use of almost free raw materials, the release of more competitive products. Of course, it is necessary to provide that part of the costs will be spent on additional processing, revision, activation, modification of this technogenic raw material component. But today we have to think about how to clear the territory of substandard “waste rock” and use it to reduce the production and consumption of natural raw materials. A similar process can create waste-free production.

scholarly journals Geo-Environmental Problems of Open Pit Mining: Classification and Solutions

2018 ◽  
Vol 41 ◽  
pp. 01034
Author(s):  
Michaela Koščová ◽  
Mark Hellmer ◽  
Seroni Anyona ◽  
Tatiana Gvozdkova
Keyword(s):  
Building Materials ◽  
Underground Mining ◽  
Mining Industry ◽  
Environmental Problems ◽  
Production Equipment ◽  
Open Pit ◽  
Open Pit Mining ◽  
Production And Consumption ◽  
Open Development ◽  
Entire Complex

Open mining development is the cheapest method, because it uses powerful production equipment, which allows a large amount of minerals to be excavated during a shift. Working conditions in open development are less dangerous for the health of workers, and a smaller number of supervisory personnel than in underground mining is required. In the process of open development, stripping works are first carried out, i.e. the removal of the empty rocks covering the deposit. Constantly growing requirements for energy sources, metal ores and building materials cause the need for intensive development of the mining industry. There is a rejection of significant areas for the development of minerals in an open and closed way. The causes of degradation are both the mining of minerals, as well as construction, the placement of production and consumption wastes in the natural environment. Changes in the components of the environment are observed as a result of direct or indirect influence of mining enterprises activities. This requires an analysis of the entire complex of geo-environmental problems of open mining and the identification of the most urgent ways to solve them.

scholarly journals Soil concrete based on waste of heat power engineering and siftings of rock grinding

2019 ◽  
Vol 140 ◽  
pp. 05015
Author(s):  
Natalia Konovalova ◽  
Elena Rush ◽  
Dmitry Bespolitov ◽  
Pavel Pankov
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Phase Analysis ◽  
Building Materials ◽  
Specific Activity ◽  
Natural Radionuclides ◽  
Mining Industry ◽  
Emission Spectrometry ◽  
Heat Power ◽  
X Ray

The possibility of recycling large-tonnage waste of heat power engineer-ing and mining industry in road construction is shown. Compositions of road-building materials were researched, containing siftings of rock grinding, fly ash, Portland cement, modified with a stabilizing additive of polymeric nature. X-ray phase analysis showed availability of quartz in fly ash, calcite, feldspars, goethite and X-ray amorphous phase, what is consistent with the data of infrared spectroscopy. By atomic emission spectrometry with inductively coupled plasma it was revealed that fly ash is latent-active and can be disposed in compositions in the presence of a stabilizing additive. The X-ray phase analysis of grinding siftings showed that it contains quartz, feldspars, chlorite, calcite and dolomite. The specific activity of natural radionuclides (226Ra, 232Th, 40К) of fly ash and grinding siftings was 248 and 110 Bq/kg, which allows using such waste in construction without restrictions. It was revealed that the initial mineral raw materials belong to multiphase polymineral systems; therefore, when modifying them with stabilizing additives, binding of finely divided particles should be taken into account. It was revealed that the optimal content of Portland cement and fly ash in samples is 8 and 10 wt.%. It was found that an increase in the mass fraction of fly ash in the composition of soil-concrete up to 30 wt.% leads to softening of the samples and a decrease in their strength characteristics.

scholarly journals RISK MANAGEMENT IMPLEMENTATION PRACTICES IN RUSSIAN INDUSTRIAL COMPANIES: RESULTS OF AN EMPIRICAL STUDY

2020 ◽  
Vol 10 (4) ◽  
pp. 410-423
Author(s):  
M. O. Kuznetsova
Keyword(s):  
Risk Management ◽  
Management System ◽  
Building Materials ◽  
Mining Industry ◽  
Management Systems ◽  
Industrial Companies ◽  
Research Areas ◽  
Industrial Organizations ◽  
Risk Management System ◽  
Pharmaceutical Industries

The article analyzes the practice of implementing risk management in Russian industrial companies. The study conducted a survey of 96 industrial companies in various industries in order to identify the features of implementing a risk management system in Russian industrial organizations. The main goals of implementing risk management systems in industrial companies, the features of organizational risk management structures, the amount of costs for maintaining risk management systems, risk assessment methods, the activities of industrial organizations that integrate risk management processes, and the level of automation of risk management systems were identified.The method of assessing the level of maturity of risk management is proposed: absent, managed, quantitatively managed, optimized and advanced levels.Using cluster analysis, groups of Russian industrial companies in various industries were identified by the level of process maturity of the risk management system. The most developed in the field of risk management systems are companies in the mining industry, mechanical engineering, as well as those engaged in the production of consumer goods. Companies with the least developed level of risk management include companies in the furniture, pulp and paper, cosmetics, and pharmaceutical industries, as well as those that produce building materials.On the basis of the survey identified the main barriers introducing a comprehensive system of risk management of industrial companies.The described research areas will help to increase the effectiveness of the risk management system, which will help to increase the strategic stability of the company.

scholarly journals PROPERTIES OF THE STEEL-FIBER-REINFORCEDCONCRETE WITH DISPERSED REINFORCING WIRE FIBER FROM TECHNOGENIC WASTE

2020 ◽  
Vol 6 (444) ◽  
pp. 47-56
Author(s):  
M.V. Doudkin ◽  
◽  
A.I. Kim ◽  
A.V. Vavilov ◽  
V.Yu. Chernavin ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Steel Fiber ◽  
Steel Wire ◽  
Experimental Studies ◽  
Mining Industry ◽  
Fiber Reinforced Concrete ◽  
Industrial Wastes ◽  
Fiber Reinforced ◽  
The Government

The article presents the results of theoretical and, most importantly, experimental studies of some properties of steel-fiber-reinforcedconcrete reinforced with dispersed reinforcement from industrial wastes, namely, ITEX steel wire fiber from SPA INNOTECH from spent steel ropes, a large number of which are used as raw materials for fiber production, has accumulated in the region with the mining industry (East Kazakhstan region). The result of the research was indicators of tensile strength of fiber-reinforced concrete during bending of samples, characteristics of crack resistance, and impact strength indicators of fiber-reinforced concrete reinforced with fiber from industrial waste. Knowing and demonstrating these characteristics will make it possible to more effectively ensure the possibility of selling a new product on the building materials market. This publication has been carried out as part of the sub-project Technology for Manufacturing Fiber from Technogenic Wastes, funded by the Government of the Republic of Kazakhstan and the World Bank, Project for Stimulating Productive Innovations.

scholarly journals Vietnamese Surface Mining - Training and scientific research for integrating the Fourth Industrial Revolution

2020 ◽  
Vol 61 (5) ◽  
pp. 1-15
Author(s):  
Nam Xuan Bui ◽  
Giao Si Ho ◽  
Keyword(s):  
Building Materials ◽  
Industrial Revolution ◽  
Labour Force ◽  
Scientific Research ◽  
Mining Industry ◽  
Surface Mining ◽  
High Quality ◽  
Fourth Industrial Revolution ◽  
Mining Coal

Department of Surface Mining, belonging to Faculty of Mining, of Hanoi University of Mining and Geology (HUMG), is one of the most traditional departments in HUMG, with 55 experience years in training Diplom Engineer, Master of Engineering and Doctor of Engineering for Vietnam. Surface Mining has an important role in Vietnamese Mining Industry, especially in mining coal, ore and building materials. To enhance the surface mining effect, high - quality labour force training and scientific research is very important, especially in the trend of integrating the fourth industrial revolution. The pape confirms the role of surface mining; lists the achievements of the Surface Mining Department; summaries the challenges of Vietnamese Surface Mining and trend of mining industry in integrating the fourth industrial revolution, and proposes some orientations in training and scientific research of Vietnamese Surface Mining for sustainable development.

scholarly journals Concretes Made of Magnesium–Silicate Rocks

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 441
Author(s):  
Lyudmila I. Khudyakova ◽  
Evgeniy V. Kislov ◽  
Irina Yu. Kotova ◽  
Pavel L. Paleev
Keyword(s):  
Environmental Protection ◽  
Building Materials ◽  
Concrete Strength ◽  
Control Sample ◽  
Mining Industry ◽  
Magnesium Silicate ◽  
National Standards ◽  
Complete Replacement ◽  
Concrete Production ◽  
Silicate Rocks

At present, there is a shortage of high-quality feedstock to produce widely used building materials—concretes. Depletion of natural resources and growing restrictions on their extraction, in connection with environmental protection, necessitate the search for an equivalent replacement for conventional raw materials. Magnesium–silicate rocks are a waste of the mining industry. We researched the possibility of using these rocks as coarse and fine aggregates in heavy concrete production. Following the requirements of the national standards, we studied the physical and mechanical characteristics of the obtained material. It was found that the strength of concrete, made of magnesium–silicate rock coarse aggregate, at the age of 28 days of hardening is within 28 MPa, while the strength of the control sample is 27.3 MPa. Replacing quartz sand with dunite sand also leads to an increase in concrete strength (~4%). Complete replacement of aggregates facilitates an increase in strength by 15–20% than the control sample. At the same time, the density of the obtained materials becomes higher. Concretes have a dense structure that affects their quality. Concrete water absorption is within 6%. The fluxing coefficient is 0.85–0.87. The application of magnesium–silicate rocks in concrete production enables the complete replacement of conventional aggregates with mining waste without reducing the quality of the obtained materials. Furthermore, the issues of environmental protection in mineral deposit development are being addressed.

scholarly journals Perubahan Luasan Mangrove Pesisir Timur Kabupaten Bangka Tengah Menggunakan Citra Satelit ASTER

2018 ◽  
Vol 12 (1) ◽  
pp. 53-60
Author(s):  
Navisa Savira ◽  
Agus Hartoko ◽  
Wahyu Adi
Keyword(s):  
Building Materials ◽  
Local Community ◽  
East Coast ◽  
Mining Industry ◽  
Mangrove Forests ◽  
Residential Areas ◽  
Ecological Value ◽  
Mangrove Area ◽  
Mangrove Resources ◽  
Mangrove Degradation

Mangrove resources provide economic and ecological value. The expansion of residential areas makes the level of need for shelter as well as the region increases. This will have an impact on the utilization of mangrove in sufficient needs such as firewood, charcoal and building materials. If continue berlasngsung then do not deny the existence of mangrove degradation. The occurrence of mangrove degradation will have a direct impact on the local community. Considering the importance of mangrove function and the need for data of mangrove area change, it is needed to analyze the change of mangrove area in coastal of Bangka Tengah, which will be analyzed within 15 years in 2002 and 2017, so that the result of this study is expected to be further management by local government to conserve mangrove forests. This research was conducted from December 2017 to March 2018 with location station determination based on unsupervised image classification, that is classification based on digital number using RGB_231 image composite for ASTER image. Based on the results of the study, there is a change of mangrove area from 2002-2014 as much as 176.3 Ha or about 15.95% and in 2014-2017 there is an increase of 36.23 Ha or about 3.9%. The value of NDVI analys in East Coast of Central Bangka Regency in 2017 ranges from 0.005 to 0.156. the occurrence of the reduction of mangrove area due to the changing function of mangrove land into settlement, mangrove logging in the utilization of charcoal and mining industry. The addition of the extent of the addition of seedlings along the coast of Kurau and Penyak.

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