INVESTIGATING THE POSSIBILITY USING CRUSHING MATERIALS OF PRODUCTION OF JSC «NIKOPOL FERROALLOY PLANT» DURING ROAD CONSTRUCTION

2020 ◽  
Vol 264 (4) ◽  
pp. 52-58
Author(s):  
Ivan Kopynets ◽  
◽  
Oleksii Sokolov ◽  
Anton Zheltobriukh ◽  
Vasiliy Golovchenko ◽  
...  
Keyword(s):  
Grain Size ◽  
Physical And Mechanical Properties ◽  
National Standards ◽  
Industrial Wastes ◽  
Crushed Stone ◽  
Food Utilization ◽  
The European Union ◽  
Environment Change ◽  
Sand Mixture ◽  
Stone Materials

Disposal of secondary materials is intended for the conservation of natural resources and the speedy maintenance of travels, as it is necessary to dispose of them in special missions. Utilization will be attracted by the countries of the European Union, in which all directives are in accordance with the provisions for managing the inputs. On the current year in Ukraine, there is no food utilization in the industry, that is why this part is located at the doorways that carry in itself a great risk for ecology, and only insignificant part is to be utilized in future events. This paper presents the results of a study of crushed stone materials produced by JSC «NIKOPOL FERROAL ALLOYS PLANT». Experimental researches on establishment of physical and mechanical properties of crushed stone of fraction of 5 – 10 mm, crushed stone of fraction of 10 – 20 mm, crushed stone of fraction of 20 – 40 mm, crushed stone of fraction of 40 – 70 mm, crushed stone-sand mix with the maximum grain size of 20 mm, crushed stone sand mixture with a maximum grain size of 40 mm, crushed stone-sand mixture with a maximum grain size of 70 mm and sand from screenings of crushing fraction 0 – 5 mm. The conformity of the studied materials to the requirements of national standards is established and the field of their application for the device of constructive layers of pavement is defined. Additional materials can be used without viscous for crushed stone spheres of road bedding (cover, base, additional basis), as well as with organic binders at the storage of asphalt concrete , black crushed stone, sums of organo-minerals from milling materials of road surfaces, which are prepared using the method of cold recycling, crushed stone-fueled sums, overgrown with inorganic knitting or a complex of knitting. Victory of pre-existing crushed stone materials for an hour of development of automobile roads to allow the change of technogenically new ones to the new environment, change of debts on the basis of victories of natural crushed stone materials and resources of vitality. Keywords: industrial wastes, road pavement, metallurgical slag, crushed stone, crushed stone-sand mixtures.

Study of properties of dusty wastes from power generating plants of Ukraine

2021 ◽  
Vol 2021 ◽  
pp. 94-101
Author(s):  
Ivan Kopynets ◽  
◽  
Volodymyr Kaskiv ◽  
Оleksii Sokolov ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Power Plants ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
National Standards ◽  
Industrial Wastes ◽  
Partial Replacement ◽  
Tailings Dam ◽  
The European Union ◽  
Waste Products

Introduction. Disposal of recycled materials is targeted at saving the natural resources and reducing the volume of wastes that have to be disposed of in special landfills. Disposal is encouraged by many countries of the European Union. A key element in promoting of wastes recycling is the «polluter pays» principle, which has been included in all Community directives regarding management of safe and hazardous wastes. In order to encourage recycling, many Member States have adopted specific environmental legislation, in particular, the wastes disposal tax.Problem statement. Today, in Ukraine the issue of utilization of industrial wastes has not been solved, that is why a considerable part of them are in the dumps and pose a great risk for the environment; and only a small part of them is utilized in the construction projects [1], although there exists the «State Target Economic Program for the Development of Public Roads of National Significance for 2018–2022» [2] and the Order of the Cabinet of Ministers of Ukraine [3] which regulate the use of local materials, including industrial waste during the construction of motor roads. At the same time, millions of tons of dusty wastes are being produced at the Ukrainian power plants as a result of coal combustion — fly ash and ash from a tailings dam.Purpose. Carrying out of research of ash from a tailings dam and a mixture of limestone material with the ash from the tailings dam on conformity with the requirements to fillers.Materials and methods. The ash from a tailings dam, a mixture of limestone material with the ash from a tailings dam and commercially produced limestone filler have been selected for the study.Results. The results of the research on establishing the possibility of using the dusty waste products from power generating plants for the production of asphalt mixtures are presented. Experimental studies have been performed to determine the physical and mechanical properties of the ash from the tailings dam with partial replacement by limestone material. The conformity of the studied materials to the requirements of national standards was determined.Conclusions. Studies for determination of grading, porosity, swelling and structuring ability showed that the tested ash does not meet the requirements of Table No.5 of DSTU B V.2.7-121 for porosity in the case of compaction of 40 MPa; a mixture 80:20 — for swelling of samples of the filler with bitumen; and the mixture 50:50 meets the established requirements by defined indicators. A significant swelling increase of the samples from the mixture of filler with bitumen may be the result of high content of clay impurities in the test materials.Keywords: industrial wastes, limestone material, ash, filler. physical and mechanical properties.

Analysis Criteria for Choosing Energy Efficient High-Quality Light Sources and Luminaires

2018 ◽  
pp. 113-119
Author(s):  
Gennady Ya. Vagin ◽  
Eugene B. Solntsev ◽  
Oleg Yu. Malafeev
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
National Standards ◽  
Light Sources ◽  
The European Union ◽  
High Quality ◽  
Eu Directive ◽  
The World ◽  
A New Technique ◽  
Energy Labelling

The article analyses critera applying to the choice of energy efficient high quality light sources and luminaires, which are used in Russian domestic and international practice. It is found that national standards GOST P 54993–2012 and GOST P 54992– 2012 contain outdated criteria for determining indices and classes of energy efficiency of light sources and luminaires. They are taken from the 1998 EU Directive #98/11/EU “Electric lamps”, in which LED light sources and discharge lamps of high intensity were not included. A new Regulation of the European Union #874/2012/EU on energy labelling of electric lamps and luminaires, in which these light sources are taken into consideration, contains a new technique of determining classes of energy efficiency and new, higher classes are added. The article has carried out a comparison of calculations of the energy efficiency classes in accordance with GOST P 54993 and with Regulation #874/2012/EU, and it is found out that a calculation using GOST P 54993 gives underrated energy efficiency classes. This can lead to interdiction of export for certain light sources and luminaires, can discredit Russian domestic manufacturer light sources and does not correspond to the rules of the World Trade Organization (WTO).

USE OF ACRYLIC COPOLYMER ADDITIVE SOIL STABILIZATION PLUS FOR PREPARATION OF MIXTURES MADE BY COLD RESYCLING TECHNOLOGY AND CRUSHED STONE-SAND MIXTURES IN PAVEMENT FOUNDATION LAYERS

2021 ◽  
Vol 2021 (24) ◽  
pp. 48-59
Author(s):  
Anatolii Mudrychenko ◽  
◽  
Ivan Balashov ◽  
Sergey Illyasch ◽  
◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Crushed Stone ◽  
Technological Parameters ◽  
Acrylic Copolymer ◽  
Sand Mixture ◽  
Recycling Technology ◽  
Complex Binder ◽  
Cold Recycling ◽  
Pavement Foundation

ntroduction. Rehabilitation of public roads network requires a comprehensive recovery with strengthening of the bearing capacity of the pavement foundation. Rehabilitation of the foundation bearing capacity performed by arranging layers of road material made by cold recycling technology (hereinafter — CRRM) in accordance with [4] or by arranging a layer of crushed stone — sand mixture reinforced with cement or complex binder (hereinafter — CSSM 20) according to [13]. Purpose. The purpose of the work is to study the feasibility of using acrylic additives for the preparation of mixtures made by cold recycling technology and crushed stone-sand mixtures treated with cement in the layers of pavement foundation. Materials and methods. Experimental comparative tests of CRRM and CSSM 20 with different content of complex binder were performed. Results. Feasibility of acrylic additives use has been established (hereinafter — the additive) for the preparation of CRRM and CSSM 20 in the pavement foundation layers. Recommendations on technological parameters of preparation, transportation, laying and compaction of mentioned mixtures are given. Conclusions. Performed researches have shown that according to physical and mechanical indicators CRRM and CSSM20 meet the requirements of the current normative documents of Ukraine. The advantages of use are noted.

scholarly journals Modelling of Pollution Transport with Sediment on the Example of the Widawa River

2013 ◽  
Vol 39 (2) ◽  
pp. 29-43 ◽  
Author(s):  
Robert Kasperek ◽  
Marian Mokwa ◽  
Mirosław Wiatkowski
Keyword(s):  
Grain Size ◽  
Cross Sections ◽  
Sample Volume ◽  
Industrial Wastes ◽  
Phosphorus Concentration ◽  
Pollution Transport ◽  
Sediment Grain Size ◽  
Run Off ◽  
Odra River ◽  
Geochemical Analyses

Abstract The aim of the study was to determine the contamination transport condition with sediment in the Widawa River, which inflows to the Odra River below Wrocław city. The transport simulations have been performed by means of HEC-RAS model, which was calibrated. Study and geochemical analyses indicate that pollutions are cumulated mainly in sediment of grain size, less than 0,20 mm. It was stated that the main sources of contaminations occurring in the Widawa River bottoms are: superficial run-off, municipal and industrial wastes. Sediment bed quality from the Widawa River in selected cross-sections has been analyzed. Samples of suspended load were collected and divided into eight fractions, for which the phosphorus concentration P was calculated. Deposit particles less than 0,20 mm contained most phosphorus, i.e. 73% (3,52 ppm), and particles greater than 0,20 mm about 27% (1,30 ppm) for the whole sample volume. Relationship between the phosphorus concentration P and the sediment grain size was determined. Analysis showed that the initiation of contamination-sediment suspension in the Widawa River is well described by Engelund criterion. Simulations of the migration of pollutions together with deposits in the Widawa River showed that during average flow discharge, the transport intensity of pollution was equal 2 mg/s, and sediments 6 kg/s. In the present work the water quality of the Widawa River has been also presented.

scholarly journals RESEARCH OF PHYSICAL AND MECHANICAL PROPERTIES OF BLENDED BRICKS WİTH FLY ASH BASED, BLAST FURNACE SLAG ADDITION

2019 ◽  
Vol 7 (1) ◽  
pp. 126-136
Author(s):  
Hakan Çağlar ◽  
Arzu Çağlar
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Physical And Mechanical Properties ◽  
Industrial Wastes ◽  
Second Stage ◽  
Volume Weight ◽  
History Of ◽  
Furnace Slag

In this study, it is aimed to make improvements on blended brick (1) which is the first building material has a history of at least 10,000 years. To the blended brick which is a traditional material was kept constant at 5% the addition of fly ash which is industrial waste. It was aim of determine of the effect on the physical and mechanical properties of the blended brick using different ratios (5%, 10%, 15% and 20%) blast furnace slag. In the first stage, the production of fly ash-based blast furnace slag doped sample of blended brick was performed. In the second stage, a variety of experiments were applied to determine the physical and mechanical properties of the blended brick sample. As a result; It has been determined that unit volume weight and compressive strength decreases with the use of industrial wastes in blended brick production. They have occured an increase in porosity and capillary water absorption values. The use of industrial wastes in the production of blended bricks will contribute both improve the properties of the bricks and   the reduction of wastes left to the environment.

6. The European Union and the environment

2017 ◽  
Author(s):  
Stuart Bell ◽  
Donald McGillivray ◽  
Ole W. Pedersen ◽  
Emma Lees ◽  
Elen Stokes
Keyword(s):  
European Union ◽  
Environmental Protection ◽  
Environmental Law ◽  
National Standards ◽  
Eu Law ◽  
The European Union ◽  
Law And Policy ◽  
The Impact ◽  
Different Sources ◽  
The Eu

This chapter provides a brief overview of how the EU shapes UK environmental law and policy. It begins by providing an introductory guide to EU law, outlining the key institutions of the EU, the different sources of EU law, and how EU law is made. The chapter then proceeds to look at the more substantive elements of EU law as they affect environmental protection, starting with the policy and constitutional bases for EU environmental law, and gives a flavour of the scope of EU environmental legislation, before considering the scope for national standards to exceed those set at EU level or to disrupt trade between the Member States. This is followed by a discussion of the challenges faced in making EU environmental law work, and then with some thoughts on the impact of Brexit and how this may shape UK environmental law.

scholarly journals Comparison of physical and mechanical properties of mining waste with a grain size up to 2 mm reinforced with cement CEM I and CEM III

2019 ◽  
Vol 106 ◽  
pp. 01023
Author(s):  
Justyna Morman-Wątor
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Fine Particles ◽  
Physical And Mechanical Properties ◽  
Mining Waste ◽  
Soil Testing ◽  
Mechanical Parameters ◽  
Freeze Resistance

The article presents the results of tests for mining waste mixtures - cement. The addition of cement was aimed at limiting the leaching of fine particles and improving physical and mechanical parameters. The studies used cement CEM I 42.5 R and CEM III/ A 42.5N - LH / HSR / NA and plasticizing sealant. The paper presents the results of freeze resistance, swelling tests, pH of water leachate and oedometer soil testing.

scholarly journals Effect of Organic Material Type and Proportion on the Physical and Mechanical Properties of Vegetation-Concrete

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Daxiang Liu ◽  
Baohua Zhang ◽  
Yueshu Yang ◽  
Wennian Xu ◽  
Yu Ding ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Organic Material ◽  
Physical And Mechanical Properties ◽  
Remarkable Effect ◽  
Material Type ◽  
Distillers Grain ◽  
Main Components ◽  
Corn Distillers ◽  
Protection Engineering

Vegetation-concrete is one of the most widely used substrates in ecological slope protection engineering. The porosity of the vegetation-concrete must be high enough to satisfy the growth needs of the plant roots, while the mechanical properties must be strong enough to satisfy the self-stability requirement of the substrates on the slope. It is necessary to balance these two aspects in the design of vegetation-concrete. As one of the main components in vegetation-concrete, organic material has a remarkable effect on both the porosity and the mechanical properties of the substrate. In this paper, four types of common organic materials (rice husks, sawdust, and corn distillers’ and unhulled rice distillers’ grain) are chosen to research the effect of the organic material type and proportion on the porosity and mechanical properties of the substrate. The experimental results show that the porosity of samples containing corn distillers’ grain is clearly higher than those of the other samples types, while situation of the mechanical properties is the opposite. It can be concluded that organic material with a large grain size is not suitable for use in vegetation-concrete directly and needs to be crushed before use to prevent crack formation. The research results also show that the rates of increase in porosity decrease with more organic material added, while the rates of decrease in the unconfined compressive strength and the elasticity modulus increase. From a comprehensive consideration of the required mechanical properties and plant growth, organic material with a small grain size is most suitable for use in vegetation-concrete, and the suitable proportion is between 7% and 9%.

scholarly journals New Eco-Friendly Gypsum Materials for Civil Construction

2008 ◽  
Vol 587-588 ◽  
pp. 908-912 ◽  
Author(s):  
Rute Eires ◽  
Aires Camões ◽  
Saíd Jalali
Keyword(s):  
Paper Industry ◽  
Research Work ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Quercus Suber ◽  
Industrial Wastes ◽  
Acoustic Properties ◽  
Cellulose Fibres ◽  
Vibration Absorption ◽  
Cork Industry

The sustainable world’s economic growth and people’s life improvement greatly depend on the use of alternative products in the architecture and construction, such as industrial wastes conventionally called “green materials”. This paper concerns the main results of an experimental work carried out with the objective of developing new composite materials based on gypsum and incorporating waste material as granulated cork, a by-product of cork industry, and cellulose fibres, a waste of paper industry. Such materials are intended to be used as composite boards for non structural elements of construction, such as dry walls and ceiling. Cork (bark of the plant Quercus Suber L), a substance largely produced in Portugal, is a material whose characteristics are of considerable interest for the construction industry. It is regarded as a strategic material with enormous potential by its reduced density, elasticity, compressibility, waterproof, vibration absorption, thermal and acoustic insulation efficiency [1]. During the first stage of this research work the gypsum binder and its properties were studied. Then, composites with mineral additions (added to increase the waterproofing and resistance) were also developed and submitted to tests to determine their physical and mechanical properties. In last stage, reinforced composites using different industrial by-products have been developed. This paper will present the properties and the manufacture methods used to produce the above mentioned eco-friendly composites that can ease ways for using industrial wastes as new construction materials, with excellent inherent thermal and acoustic properties.

scholarly journals ON THE PREDICTION OF NON‐LINEAR CREEP STRAINS

2010 ◽  
Vol 16 (3) ◽  
pp. 382-386 ◽  
Author(s):  
Robertas Balevičius ◽  
Eugedijus Dulinskas
Keyword(s):  
National Standards ◽  
Test Results ◽  
The European Union ◽  
Short Term ◽  
Main Design ◽  
Design Specifications ◽  
Linear Creep ◽  
Non Linear ◽  
Structural Engineers ◽  
Creep Strains

In the short term, the Euorocode‐based techniques will be implemented as the main design specifications for structural engineers from the member‐states of the European Union instead of the national standards. Therefore, it is of primary importance draw attention to the observed inaccuracies, particularly, in predicting non‐linear creep strains according to EC‐2. The analysis performed was mainly focused on an inconsistency elimination observed in the original EC‐2 approach, when transition from the linear to non‐linear creep laws for a constant compressive stress is required. A recent CEN corrigendum eliminating the observed inconsistency was also discussed in detail. In this context, similar techniques which were reported in the literature for predicting the creep non‐linearity function were analysed to account for the results obtained. It was particularly demonstrated that the recent CEN amendment results in an extremely enhanced creep strain for low strength concrete. A comparison of the creep non‐linearity functions with experimental test results was also considered. Santrauka Artimiausiu metu nacionalines normas pakeis Europos normos, kurios taps privalomu normatyviniu dokumentu Europos Sajungos šaliu statybos inžinieriams. Todel labai svarbu konstatuoti ir patikslinti jose pastebetus netikslumus. Straipsnyje akcentuojamas normu EC2 metodikoje pastebetas valkšnumo deformaciju nesutapimas, kai reikalingas perejimas iš tiesiniu valkšnumo deformaciju prie netiesiniu. Pateikiama žinomu metodu ir eksperimentiniu tyrimu rezultatu lyginamoji analize, autoriu siūlymai bei detaliai nagrinejamas neseniai išleistas CEN komiteto taisymas. Atlikus analize nustatyta, kad CEN korektūra lemia nepaprastai dideles mažo stiprumo betonu netiesinio valkšnumo deformacijas.

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