Development of New Adhesives with Share of Secondary Raw Materials for Depositing of Non-Absorbent Facing Elements in Aggressive Environments

2019 ◽  
Vol 808 ◽  
pp. 82-87
Author(s):  
Jindřich Melichar ◽  
Jakub Hodul ◽  
Kamila Bergerová ◽  
Rostislav Drochytka
Keyword(s):  
Research And Development ◽  
High Temperatures ◽  
Raw Materials ◽  
Chemical Compounds ◽  
New Materials ◽  
Adhesive Material ◽  
Is Research ◽  
Secondary Raw Materials ◽  
Adhesive Mixtures ◽  
Adhesive Materials

The main focus of this paper is research and development of new adhesive materials which will be possible to apply and withstand conditions of environments with exposure to aggressive chemical compounds. These new materials will also be required to withstand high temperatures up to 100°C. Main application of developed adhesives will be during laying of non-absorbent tiles mainly made from cast basalt. Several secondary raw materials were considered during the development of new adhesive mixtures as possible replacement of silicate filler components of new materials. The goal is to develop a new adhesive material with properties as close as possible to the highly durable non-absorbent elements used in stressed environments, mainly because the material will be also used for pointing between individual elements.

Preparation and Properties of Pressed Metakaolin and Fly Ash Based Alkali-Activated Binders

2014 ◽  
Vol 897 ◽  
pp. 65-68 ◽  
Author(s):  
Jana Boháčová ◽  
Stanislav Staněk ◽  
Pavel Mec
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
High Temperatures ◽  
Frost Resistance ◽  
Raw Materials ◽  
Fly Ashes ◽  
Secondary Raw Materials ◽  
Alkali Activated Binders ◽  
Alkali Activated

Metakaolin, fly ashes and other secondary raw materials serves as suitable input in preparation of alkali-activated binders. This work deals with preparation of alkali-activated materials based on metakaoline and fly ash. Mixtures were prepared with a minimum of mixture water, ready for pressing. Prepared specimens were tested for tensile strength and pressure strength, resistance to high temperatures, frost resistance and resistance to water and salt.

THE EFFECTIVENESS OF PRACTICUM KIT AS A LEARNING MEDIA TO TRAIN SPS ON REACTION LAW

2020 ◽  
Vol 3 (2) ◽  
pp. 35
Author(s):  
Sigit Trimayanto ◽  
Dian Novita
Keyword(s):  
Data Analysis ◽  
Research And Development ◽  
Learning Outcomes ◽  
Test Data ◽  
Reaction Rate ◽  
Cognitive Learning ◽  
Science Process Skills ◽  
Is Research ◽  
Post Test ◽  
The Media

This study aims to produce the Practical KIT along with its devices that are effectively used as learning media to train students SPS on the sub material of the Reaction Rate Law. The method used in this study is Research and Development design. The research instrument used consisted of a sheet of pre-test and post-test. Data analysis was carried out in descriptive quantitative to determine the effectiveness of Practical KIT along with the devices developed. The media is said to be effective if it meets 2 requirements, namely the percentage of classical completeness <85% and N-gain value <0.3. The developed media has been declared effective as indicated by the increase in the value of cognitive learning outcomes in the "Medium" and "High" categories with 100% classical completeness, an increase in the value of science process skills of students after using the Practical KIT media. "With classical completeness reaching 91.67%.

scholarly journals Organizational, technical and economic fundamentals of waste management and monitoring

2020 ◽  
Vol 164 ◽  
pp. 08031
Author(s):  
Evgeniy Velichko ◽  
Edward Tshovrebov ◽  
Ural Niyazgulov
Keyword(s):  
Legal Status ◽  
Raw Materials ◽  
Economic Regulation ◽  
Economic Activities ◽  
Renewable Raw Materials ◽  
Secondary Resources ◽  
Secondary Raw Materials ◽  
Production And Consumption ◽  
Level Of Use ◽  
Goals And Objectives

The article deals with issues of monitoring, planning, organizational and technical support, economic regulation and improving the efficiency of the infrastructure for processing, recycling and disposal of waste, resource conservation and management of secondary resources, their use as secondary raw materials for production, services, work and power generation. The Russian Federation has significant potential for economic growth due to the efficient use of secondary resources from billions of tons of generated production and consumption waste annually. These ecologically unsafe anthropogenic objects can be characterized as a source of valuable renewable raw materials, material and fuel and energy resources. However, the scale and level of use of various types of secondary resources are characterized by considerable unevenness and depend on the demand for secondary raw materials, the resource value of the waste, the environmental situation arising from treating them as environmental polluters, on the real economic conditions that determine the profitability of each specific type. economic activities that use secondary resources for the manufacture of products, works, services, energy production. The methods of monitoring the industry for the treatment, disposal and disposal of waste are: information-analytical, information-statistical, sociological, geo-information. The legal status of the monitoring system of the industry for the treatment, disposal and disposal of waste is determined by the limitations of its functionality within the framework of the goals and objectives facing it.

Preparation of Alternative Hydraulic Binder Based on Secondary Raw Materials

2014 ◽  
Vol 1000 ◽  
pp. 12-15
Author(s):  
Jiří Švec ◽  
Tomáš Opravil ◽  
Jiří Másilko
Keyword(s):  
Portland Cement ◽  
Raw Materials ◽  
Construction Materials ◽  
High Volume ◽  
Point Of View ◽  
Hydraulic Lime ◽  
Combustion Gases ◽  
Secondary Raw Materials ◽  
Hydraulic Binder ◽  
Massive Scale

Reusing and recycling of secondary raw materials from high-volume industrial productions (especially form construction materials and binders fabrications) is very important way of conserving environment and it is also interesting from the economical point of view. The production of common hydraulic binders, especially Portland cement, burdens the environment with considerable amount of combustion gases and consumes energy in massive scale. Alternative (low – energy) binder can be used as Portland cement substitution in applications with lower mechanical properties requirements. Mined limestone wash sediments contain large amount of clay components, but there is also indispensable share of fine calcite. This composition makes these sediments a promising material for the preparation of hydraulic binders as Roman cement or hydraulic lime.

Investigation on Shear Behaviour of Flax-Kenaf Hybrid Composite

2014 ◽  
Vol 1051 ◽  
pp. 139-142 ◽  
Author(s):  
V.S. Srinivasan ◽  
S. Rajendra Boopathy ◽  
B. Vijaya Ramnath
Keyword(s):  
Hybrid Composite ◽  
Raw Materials ◽  
Technological Development ◽  
Fiber Composites ◽  
Shear Behaviour ◽  
Biodegradable Material ◽  
New Materials ◽  
Double Shear ◽  
Environmental Friendly ◽  
Shear Property

The present technological development makes us to find and fabricate new materials to replace existing materials. Also, the need for environmental friendly, easily biodegradable material plays prime role in determining the raw materials. In this paper Flax and Kenaf fibres are used as the suspending matrix to form hybrid composite with epoxy resin. Hand layup technique is carried out in this work to fabricate composite laminate. The double shear property is evaluated. The result shows that the hybrid composite shows better property than mono fiber composites.

STATE AND PROSPECTS OF PROCESSING OF SECONDARY RAW MATERIALS OF WINE-MAKING IN UKRAINE

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
L. Osipova ◽  
O. Radionova ◽  
L. Tkachenko ◽  
T. Abramova
Keyword(s):  
Agricultural Land ◽  
Animal Feed ◽  
Raw Materials ◽  
Acid Soil ◽  
Biologically Active ◽  
Limiting Factor ◽  
Wine Making ◽  
Secondary Raw Materials ◽  
Use Of Resources ◽  
Wide Range

The analysis of the current state of processing of secondary raw materials of wine-making in Ukraine is given. It is proved that the latter is a rich source of biologically active compounds, including phenolic ones, which makes it possible to use it for the production of a wide range of products (raccoon, polyphenol extracts, tartaric acid, beverages, fertilizers, grape oil, cake, vitamin D, animal feed, food powder, abrasives) with high consumer value for various industries: food, pharmaceutical, perfume and cosmetics, chemical, feed, etc. In the light of modern research, the role of phenolic compounds as essential nutrition factors that cannot remain out of the field of view of physiologists, pharmacologists, and food hygiene specialists is shown. However, currently in Ukraine there are no specialized enterprises for complex processing of secondary raw materials of winemaking; traditional technologies are not effective from a technological, economic and environmental point of view, which indicates not rational use of resources and loss of material resources; there are no systematic studies on physical and chemical, microbiological, Toxicological composition in order to determine the optimal direction of its use. A limiting factor is also the lack of comparative analysis of innovative domestic and foreign technologies for processing secondary raw materials of winemaking. In the vast majority of cases, in particular, combs and pomace are taken out of control to agricultural land without special treatment, which leads to acid soil erosion and pollution of the environment with metabolites of micromycetes, increasing one of the global problems of mankind-environmental. At the present stage of technological development, there are a number of innovative developments in the field of processing secondary raw materials, in particular grape pomace, in order to obtain biologically active additives, the limiting factor for the introduction of which is the lack of domestic and expensive imported equipment. A promising way to solve the existing problems is to create a mechanism that will unite the interests of wineries (producers of secondary raw materials of winemaking), processing enterprises (producers of products from secondary raw materials of winemaking), scientists and potential consumers of innovative products. Consolidation of the above-mentioned institutions and enterprises is possible by creating clusters for the development and implementation of innovative technologies and equipment

Review of some promising areas of research in the field of new materials and nanotechnologies within the framework of the grants of the President of the Russian Federation to the leading scientific schools

2021 ◽  
pp. 84-89
Author(s):  
D.V. Belikov ◽  
E.S. Shishkin
Keyword(s):  
Research And Development ◽  
Russian Federation ◽  
Materials Science ◽  
New Materials ◽  
Scientific Schools ◽  
The Russian Federation ◽  
Scientific Results

The article provides an overview of some promising areas of research and development in the field of materials science and nanotechnology and the main scientific results obtained by the teams of the leading scientific schools of Russia, which received grants from the President of the Russian Federation in 2021.

ISOLATION OF PECTIN SUBSTANCES FROM THE PODS OF LEGUMINOUS CULTURES

2019 ◽  
Author(s):  
М.М. ПИВЕНЬ ◽  
Л.Я. РОДИОНОВА ◽  
А.В. СТЕПОВОЙ ◽  
С.М. ГОРЛОВ
Keyword(s):  
Total Mass ◽  
Raw Materials ◽  
Temperature Treatment ◽  
Secondary Raw Materials ◽  
Leguminous Crops ◽  
Pectin Substances

Исследованы створки зернобобовых культур с целью использования их в качестве источника пектиновых веществ (ПВ). Качественные показатели створок зернобобовых культур гороха и нута составили, % содержания: белка 5 и 15; жиров 1,5 и 1,8; клетчатки 46 и 40 соответственно. Содержание растворимого пектина в створках обеих культур не достигает 0,5%: 0,43 (горох) и 0,47 (нут). Количество протопектина в створках гороха и нута от общей массы составило около 95%, что позволяет отнести эти пектины к высокоэтерифицированным. Установлена необходимость предварительной температурной обработки створок плодов зернобобовых культур для максимального сохранения ПВ в сырье в процессе хранения. Потери ПВ обработанных створок зернобобовых составили 5–10% в процессе хранения 7 мес. Необработанные створки зернобобовых в течение того же срока хранения потеряли 30–35% ПВ. Установлена величина гидромодуля 1 : 10 при проведении режимов гидролиза-экстрагирования. Определены размеры частиц (3–4 мм) при измельчении створок зернобобовых культур для проведения гидролиза-экстрагирования. На основании полученных данных сделан вывод о перспективе использования вторичного сырья зернобобовых культур как источника пектиновых веществ. The secondary raw materials of leguminous crops for the purpose of their use as a source of pectin substances (PS) are investigated. Qualitative indicators of the pods of leguminous cultures of peas and chickpeas were, % of the content: protein 5 and 15; fats 1,5 and 1,8; fibers 46 and 40, respectively. The content of soluble pectin in the pods of both cultures does not reach 0,5%: 0,43 (peas) and 0,47 (chickpeas). The amount of protopectin in the pea and chickpea pods from the total mass was about 95%, which makes it possible to classify these pectins as highly esterified. The necessity of pre temperature treatment of pods of leguminous crops for maximum preservation of PS in raw materials during storage is established. Losses of treated pods of leguminous were 5–10% during storage for 7 months. Untreated pods of legumes during the same period of storage lost 30–35% of PS. The value of the hydraulic module 1 : 10 during the hydrolysis extraction regimes was established. The sizes of particles (3–4 mm) at grinding of pods of leguminous cultures for carrying out hydrolysis extraction are defined. On the basis of the obtained data the conclusion is drawn on the prospect of use of secondary raw materials of leguminous cultures as source of pectin substances.

Adhesives for the Installation of Cast Basalt Elements on Metal and Comparison of Properties when Using Different Types of Fillers

2021 ◽  
Vol 898 ◽  
pp. 35-41
Author(s):  
Jakub Hodul ◽  
Tomáš Žlebek ◽  
Lenka Mészárosová ◽  
Aleš Jakubík ◽  
Rostislav Drochytka
Keyword(s):  
Construction Industry ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Mineral Admixtures ◽  
Maximum Efficiency ◽  
Organic Additives ◽  
Metal Base ◽  
Secondary Raw Materials ◽  
Ecological Benefit ◽  
Different Types

The polymeric adhesives for the installation of basalt elements on a metal base are designed primarily for environments with increased chemical and mechanical stress. They are composed of polymer resins (epoxy, polyurethane) as binders, as well as organic additives and mineral admixtures that mainly fulfill the function of filler. In all sectors of today's construction industry, maximum efficiency in the production of materials is required for sustainability purposes, which, however, must never be at the expense of the quality or the required performance. Due to these requirements, great emphasis is placed on the maximum use of secondary raw materials. Talc is used as the primary filler for polymer adhesives. Sawdust, tire rubber, and fly ash are used as secondary raw materials. The use of these in building supplies can positively affect some physical and mechanical properties of polymeric adhesives. Also, the use of secondary raw materials has the above-mentioned ecological benefit. Basic properties, such as bulk density and adhesion to both metallic and basalt elements, were monitored. The details of the cohesion of the adhesive with the bonded material, as well as the distribution of secondary raw materials in the polymer matrix, were assessed microscopically.

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