scholarly journals Environmental and energy assessment of the use of Andesite in cement

2018 ◽  
Vol 149 ◽  
pp. 02048
Author(s):  
Moussa Hamidi ◽  
Larbi Kacimi ◽  
Pierre Clastres
Keyword(s):  
Energy Demand ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Energy Assessment ◽  
Cement Mortars ◽  
Andesitic Rock ◽  
Industrial Use ◽  
The Impact ◽  
Local Materials

The present study is a contribution to the research of new sources of supply of additions and raw materials in order to valorize local materials in the manufacture of cement. It consists in checking the environmental validity of the industrial use of andesite by evaluating the energy consumption of manufacturing andesitic cement. This evaluation was made on CEMI 52.5R type cement mortars whose basic constituent is clinker, with substitution rates of raw and calcined andesitic rock at 800 °C varying from 0-40%. and this through mechanical performance tests at several deadlines (2 days, 7 days, 28 days and 90 days). The results show that the analysis of the influence on the environment of this addition, in its raw state or calcined at 800 ° C, made it possible to say that globally the impact of andesite on the matrices seems positive to long term. The replacement of the cement by andesite systematically induces a reduction in the energy required to produce one ton of binder, due to the lower energy demand for grinding than that required for the thermal treatment of the clinker. Overall, the energy cost of andesite cement (in kWh per MPa compressive strength) is lower than that of ordinary cement for low rates of clinker replacement and obtaining cements with moderate strengths.

scholarly journals Globalization’s Impact on the Usages of Imported and Local Building Materials in Jordan

2019 ◽  
Vol 8 (10) ◽  
pp. 971-975
Keyword(s):  
Design Process ◽  
Building Materials ◽  
Raw Materials ◽  
Study Data ◽  
Noticeable Increase ◽  
Materials Used ◽  
The Impact ◽  
The Relationship ◽  
Local Materials

The process of choosing building materials is an essential part of the design process. Whenever architects and interior designers start to think about a project, one of the first things they consider is the materials that will be used in the production of the project. There is little research exploring the impact of globalization on the level of using imported and local building materials in Jordan. Therefore, it is necessary to examine the impact of globalization on the level of using imported and local building materials in Jordan and explore the impact of using imported building materials on the level of using local building materials in Jordan. For the purpose of this study, data gathered about the usage of imported building materials in Jordan and analyzed to observe any drops of rises of using specific building materials. Also, this data was used to understand the most common imported building materials used. This study requires a total understanding of the relationship between globalization and building materials and their impact on the economy and the usage of imported and local building materials. comprehension of this relationship will make it possible to find solutions to integrate the use of imported building materials and local materials. Globalization impact can be observed in other sectors in Jordan. The building materials market is being affected by the phenomenon of globalization. It was found that there is a noticeable increase in imported building materials or raw materials that are needed to manufacture building materials. If the attitude toward the usage of local building materials in Jordan keep decreases and relying on imported building materials in the construction section, there will be a recession in the local building materials in Jordan. Having this recession will have a greater impact on the building materials and local factories in the long term.

Simulation the Fertility Parameters of Artificial Soils for Green Zones in the Infrastructure of Cities in Western Siberia

2018 ◽  
Vol 9 (3) ◽  
pp. 599 ◽  
Author(s):  
Dmitry I. EREMIN ◽  
Diana V. EREMINA
Keyword(s):  
Growth And Development ◽  
Granulometric Composition ◽  
Western Siberia ◽  
Raw Materials ◽  
The Cost ◽  
The Mathematical Model ◽  
And Storage ◽  
Local Materials ◽  
Cost Of Transportation

A method is proposed for creating artificial potting soils on the basis of modeling optimal physical properties for the growth and development of lawn grasses and flower beds in the cities of Western Siberia. The properties of soils obtained by mixing the corresponding components with the specified characteristics of the granulometric composition and the main water-mechanical properties are studied. The work is based on regression formulas that are part of the mathematical model of fertility of artificial soils. When creating a fertile layer, any local materials (clay, sand, peat) can be used as components, which reduce the cost of transportation and storage of imported raw materials. The resulting soil is capable of ensuring the long-term growth of herbs and flowers in the conditions of urban development and the severe Siberian climate.

scholarly journals Consumers' Response to State Energy Efficient Appliance Rebate Programs

2017 ◽  
Vol 9 (4) ◽  
pp. 227-255 ◽  
Author(s):  
Sébastien Houde ◽  
Joseph E. Aldy
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Energy Demand ◽  
State Energy ◽  
Government Expenditure ◽  
Order Of Magnitude ◽  
Term Energy ◽  
The Impact

Through an evaluation of the 2009 Recovery Act's State Energy Efficient Appliance Rebate Program, this paper examines consumers' response to energy efficiency rebates. The analysis shows that 70 percent of consumers claiming a rebate were inframarginal and an additional 15 percent–20 percent of consumers simply delayed their purchases by a few weeks. Consumers responded to rebates by upgrading to higher quality, but less energy-efficient models. Overall the impact of the program on long-term energy demand is likely to be small. Measures of government expenditure per unit of energy saved are an order of magnitude higher than estimates for other energy efficiency programs. (JEL D12, H31, H71, Q48)

scholarly journals The Impact of Local Materials on the Improvement of the Thermal Comfort in Building

2020 ◽  
pp. 22-35
Author(s):  
Amadou Oumarou Fati ◽  
Bonkaney Abdou Latif ◽  
Ouedraogo Souleymane ◽  
S. M. Ky. Thierry ◽  
Mamadou Lewamy ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Energy Demand ◽  
Building Materials ◽  
Building Design ◽  
Temporal Variations ◽  
Raw Material ◽  
High Rise ◽  
Energy Demands ◽  
The Impact ◽  
Local Materials

The increasing energy demands in the building sector is considered as a main issue and has result both in the energy shortage and also environmental impact such as climate change and global warming. This demand is always increasing due to the high-rise level and also the need of thermal comfort. This paper aims to describe a passive approach to reduce the energy demand for a building through an improvement of the design of the thermal envelope. Within this work, we utilized the thermophysical properties of four building materials: three local materials (compressed earth, lateritic, and raw material) and one modern (Hollow cement) and an energy analysis of the building has been carried out. The numerical optimization of the building design has been performed dynamically by COMSOL Multiphysics software: case study of Ouagadougou and surface is 100m2. Also, the temporal variations in the inside of the room as well as the temperature of the walls and the ceiling with four different materials have been determined. The result shows that, for BLT, the maximum obtained around 22H is 308K, for Adobe it is 309K around 18H30, for BTC it was 309.2K at 20H and finally for cement block it is 310K around 18H. The mean average temperature of the building is low when we use local materials instead of modern one. Then, we conclude that, the use of local materials in the building design is an option for reducing the heat transfer into the room and at the energy consumption.

scholarly journals Log Truck Value Analysis from Increased Rail Usage

Forests ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 677
Author(s):  
Sangpil Ko ◽  
Pasi Lautala ◽  
Kuilin Zhang
Keyword(s):  
Case Studies ◽  
Raw Materials ◽  
Forest Products ◽  
Forest Products Industry ◽  
Upper Midwest ◽  
Time Efficiency ◽  
Value Analysis ◽  
Fuel Prices ◽  
The Impact

Over the past several decades, the transportation of raw materials (logs) has increasingly shifted from the railway to trucks. However, the long-term sustainability of this shift is being questioned due to the shortage of truck drivers, fluctuation of fuel prices, and changes in hours of service laws. The industry is interested in the possibility to shift more logs back to the railway but the impact of such a shift on truckers has not been investigated. This study attempted to quantify the impact of such a change on the operations of log truckers by calculating time efficiency (percentage of daily hours of service for revenue activities) and value efficiency (average loaded versus total ton-kilometers per day) between a truck only and multimodal (truck/rail) alternatives. We used actual data from the forest products industry companies and truck performance data from an earlier study to investigate the impact through case studies in four different locations of the upper Midwest, US. The results of our analysis revealed that in three out of our four case studies, re-routing log movements through rail yard/siding improved the time efficiency and value efficiency. Finally, our sensitivity analysis found that increases in average truck speed and maximum hours or service had higher impact on multimodal transportation than in truck-only system.

scholarly journals Barriers to sustainable development of municipalities with resource specialisation of the economy

2021 ◽  
Vol 21 (4) ◽  
pp. 174-191
Author(s):  
Anastasiya Sevastyanova ◽  
Victor Yatsenko
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Financial Incentives ◽  
New Technologies ◽  
Raw Materials ◽  
Raw Material ◽  
Inclusive Development ◽  
Stage Of Development ◽  
The Impact

Numerous studies demonstrate that the goals of economic growth frequently take precedence over addressing social problems and problems of environmental degradation. The manifestations of this imbalance differ from country to country depending on the stage of development of the productive forces, and institutional framework that ensures the creation and adoption of new practices and approaches to exploitation of natural resources. This problem is entirely inherent into the economies of resource regions. The paper aims to examine the impact of the extraction of raw materials demanded by the national economy on the problems and prospects of the long-term sustainable development of northern Russian localities. Methodologically, the research rests on the theory of inclusive development and evolutionary economic geography. The comparative analysis of the formation of local budgets and dynamics of the Okrug in Russia reveals that the degree of their financial sufficiency depends insignificantly on the scales and dynamics of raw material production. The legislation on assigning revenues to local budgets takes into account the specifics of the northern oiland gas-producing territories rather poorly. The financial capabilities of local communities do not allow handling existing ecological problems. The growth in hydrocarbon production in current institutional conditions does not guarantee sustainable long-term development for such territories. Addressing environmental issues requires instituting serious changes at federal and regional levels, including making the alterations to the articles of the Tax Code of the Russian Federation. It is also crucially important to give financial incentives to introduce new technologies, provide research grants, lower labour taxes, and raise taxes on the use of natural resources.

Based on the Digital Design of the Pneumatic Pick Force Analysis and Research of Key Parts

2013 ◽  
Vol 753-755 ◽  
pp. 1347-1350
Author(s):  
Chen Shen ◽  
Hua Liang Gui ◽  
Ming Ming Wu
Keyword(s):  
Mechanical Performance ◽  
Raw Materials ◽  
Design Method ◽  
Impact Resistance ◽  
Digital Design ◽  
Working Process ◽  
Air Power ◽  
Power Machinery ◽  
Resistance Performance ◽  
The Impact

Pick is a hand-held machine of the air power machinery, using compressed air as power, hit a rundown coal and ore body or other objects. In the working process of the pneumatic pick, pick cylinder under different loading easily lead to early obsolescence. In order to improve the impact resistance performance to pick picks, prolong the service life of pneumatic pick, based on the digital design method for pneumatic pick pick cylinder is modeled, and based on the simulated stress analysis, for the process improvement, improve its mechanical performance, reduce the waste of raw materials.

scholarly journals The Evolution of Russia’s Specialisation in Mutual Trade with the Countries of the EAEU

2019 ◽  
Vol 12 (4) ◽  
pp. 57-66
Author(s):  
D. I. Ushkalova
Keyword(s):  
Raw Materials ◽  
Value Added ◽  
Customs Union ◽  
Integration Process ◽  
Mutual Trade ◽  
Russian Economy ◽  
Eurasian Economic Union ◽  
Two Factors ◽  
The Impact

The subject of our research was the analysis of changes in the specialisation of Russia in mutual trade with the countries of the Customs Union — the Common Economic Space — the Eurasian Economic Union since the beginning of the functioning of the single customs territory. The work aims to characterise the impact of the integration process within the CU-SES-EAEU on the commodity structure of Russian exports to the grouping countries and the possibilities for realising Russia’s export potential in the markets of the partner countries. The author examines the most important trends and factors in the evolution of the commodity structure of mutual trade within the EAEU and Russia’s exports to these countries, assesses the importance of the EAEU countries for the realisation of the export potential of Russia. The study concluded that the integration process had a positive effect on the commodity structure of Russia’s exports to the EAEU countries: during the unification, the share of mineral products in total exports decreased by one third, while the share of machinery and chemical products, food products and agricultural raw materials rose. The author substantiated that the EAEU states are the most important market for Russian goods with a high share of value added and their importance is increasing. Nevertheless, the prospect for further realisation of the export potential of Russia in the markets of the EAEU countries is very ambiguous and will be determined by two factors: the growth rate of the Russian economy and the real achievements in the field of shaping long-term integration effects.

scholarly journals Basic Principles of Creating and Using the Waste-free Technologies in the System of Recycled Water Supply and Water Purification

2021 ◽  
Vol 937 (3) ◽  
pp. 032015
Author(s):  
N M Asratyan ◽  
I V Kornilova ◽  
S P Dyrin ◽  
A Z Nigamaev ◽  
A M Rafikov
Keyword(s):  
Water Supply ◽  
Water Purification ◽  
Raw Materials ◽  
Present Level ◽  
Recycled Water ◽  
Basic Principles ◽  
Active Approach ◽  
Environmental Requirements ◽  
The Impact

Abstract The need to protect the environment makes it necessary to significantly change the general approaches to environmental efficiency of production, to minimize the impact on nature at the present level of productivity and quality. Today instead of the temporary measures aimed at overcoming the effects of pollution, the long-term measures are being taken more and more often at the design and construction stages to nullify the causes of pollution in advance rather than to have its effects in the future. The processes and devices that have been previously used to collect and dispose the industrial waste are now considered a passive approach to environmental protection. The matter is that the amount of waste generated during the production process remains almost unchanged, and this does not meet the new environmental requirements. The active approach involves creating the modern low-waste and non-waste technologies that can efficiently use raw materials in production processes, as well as converting the waste into easily recyclable components that are least harmful to the environment. The article considers the conceptual principles that show the essence of the active approach to improving the industrial technologies in order to protect the environment. It is mainly focused on studying the features of recycled water supply and water purification.

scholarly journals EFEK PENULARAN COVID-19 BAGI USAHA MIKRO KECIL (UMK) PERSPEKTIF UNDANG-UNDANG CIPTA KERJA

2021 ◽  
pp. 1243
Author(s):  
Stephanie PD PD ◽  
Enjelina S ◽  
Natasha OA ◽  
Jeane Netlje Sally
Keyword(s):  
Raw Materials ◽  
Secondary Data ◽  
Health Condition ◽  
Small Enterprises ◽  
The Public ◽  
Descriptive Research ◽  
Legal Method ◽  
Micro And Small Enterprises ◽  
The Impact

Pagebluk corona resulted in a critical health condition of the public and disrupted the economy of the archipelago. The impact of the corona pagebluk in Indonesia; business sector, especially the Micro Small Business (UMK) sector. Some MSE actors have difficulty paying debts and employee salaries and even fire their employees, funding difficulties so that they are constrained in buying raw materials, declining buyers, closed access so that distribution and production are hampered. Micro and Small Enterprises (UMK) are the most important pillars in the Indonesian economy. The large number of Indonesian MSEs is related to all the obstacles in the field, especially during the Covid-19 pandemic. The normative legal method is used in this study, the focus is on 'secondary data' covering primary; secondary; tertiary legal materials. Qualitative approach with descriptive research nature. The government's efforts to raise the MSE class for a long-term strategy through the CK Law. A legal entity business unit makes it easier for MSEs to run their business. This makes it easier for MSEs to get capital assistance from banks. With the help of definite capital, it will be easier for his business to develop. In order to survive and develop, MSEs make several legal efforts, register their businesses, obtain halal permits and certificates, register brands, make cooperation agreements with relevant agencies, form or join MSE organizations. MSEs as the biggest supporter of the economy must receive special attention from the Indonesian government, so that they can become masters in their own country. All matters relating to government policies in tackling COVID-19 must consider the economic aspect, so as to avoid a deep downturn in MSEs actors. Pagebluk corona mengakibatkan kegentingan kondisi sehat khalayak dan mengacaukan perekonomian nusantara. Imbas pagebluk corona di Indonesia; bidang bisnis, terutama sektor Usaha Mikro Kecil (UMK). Beberapa pelaku UMK mengalami kesulitan membayar hutang dan gaji karyawan bahkan memecat karyawannya, kesulitan pendanaan sehingga terkendala dalam membeli bahan baku, menurunnya pembeli, tertutupnya akses sehingga penyaluran dan produksi terhambat. Usaha Mikro Kecil (UMK) merupakan pilar terpenting dalam perekonomian Indonesia. Banyaknya UMK Indonesia berkaitan dengan segala hambatan di lapangan, terutama dimasa pandemi covid-19. Menggunakan metode hukum normatif, fokusnya “data sekunder” meliputi “bahan hukum primer;sekunder;tersier”. Pendekatan kualitatif dengan sifat penelitian deskriptif. Upaya pemerintah untuk menaikkan kelas UMK untuk strategi jangka panjang melalui UU CK. Unit usaha berbadan hukum memudahkan UMK menjalankan usahanya. Sehingga memudahkan UMK mendapat bantuan modal dari bank. Dengan bantuan permodalan yang pasti maka usahanya akan lebih mudah berkembang. Agar dapat survive dan berkembang UMK melakukan beberapa upaya hukum, mendaftarkan usahanya, mendapatkan perijinan dan sertifikat halal, mendaftarkan merek, membuat perjanjian kesepakatan kerjasama dengan instansi terkait, membentuk atau bergabung dalam organisasi UMK. UMK sebagai pendukung perekonomian terbesar harus mendapat perhatian khusus dari pemerintah Indonesia, sehingga bisa menjadi tuan di negerinya sendiri. Segala hal yang berhubungan dengan kebijaksanaan pemerintah dalam menanggulangi cov-19 harus mempertimbangkan segi ekonomi, sehingga menghindari keterpurukan mendalam pelaku UMK. 

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