FEATURES OF TECHNOLOGY FOR PRODUCING CONSTRUCTIONAL HEAT INSULATING CELLULAR CONCRETE BASED ON NONCONVENTIONAL RAW MATERIALS

2016 ◽  
Vol 2 (1) ◽  
pp. 138-143 ◽  
Author(s):  
Строкова ◽  
Valeriya Strokova ◽  
Володченко ◽  
Anatoliy Volodchenko
Keyword(s):  
Mechanical Properties ◽  
High Activity ◽  
Energy Production ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Production Costs ◽  
Raw Material ◽  
Porous Concrete ◽  
Clay Rocks ◽  
Cellular Concrete

It was found that the clay rocks unfinished stage mineral suitable as a raw material for thermal insulation materials construction-autoclaved. High activity of raw rock-forming minerals accelerate the synthesis of tumors and the formation of a rational connection cementitious microstructure that provides high physical and mechanical properties of porous concrete. At the same time by reducing the pressure and time of autoclaving and simplify technology possible reduction of energy production costs by 35%.

scholarly journals Analysis Physical and Mechanical Of Particle Boards Raw Materials Nipah Fruit Fiber

Teknomekanik ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
M Saddikin ◽  
Hendri Nurdin ◽  
Primawati Primawati
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Average Density ◽  
Raw Material ◽  
Average Moisture Content ◽  
Particle Board ◽  
Wood Particles ◽  
Tapioca Flour

The raw materials of the timber industry, especially furniture, are increasingly difficult to obtain in the quantity and quality needed. The development efforts carried out were utilizing Nipah coir waste as a raw material for making particle boards. Particle boards are panel boards made of wood particles or materials containing lignocellulose. Nipah plants contain 27.3% lignin and 36.5% cellulose which has the potential to be used as raw material for particleboard production. This study aims to reveal the physical and mechanical properties of particleboards made from Nipah fruit fibre with adhesive using tapioca flour. The making of particle board is done with a ratio of 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, by giving a pressure of 100 kg / cm2. Particle testing is carried out according to the JIS A 5908 standard (2003). From this study, the optimum results were obtained in variations of 60%:40%. The particle physical properties which have an average density value of 1.15 gr / cm3 and an average moisture content of 5.8%. While the mechanical properties obtained by the value of Modulus of Elasticity an average of 21,188.93 kg / cm2. This shows the particle board variations of 60%: 40% produced to meet the JIS A 5908 (2003) standard. Based on the analysis of the quality variations 60%: 40% of particle boards can be recommended as raw materials for interior furniture.

Production of Cement Blocks and New Ceramic Materials with High Content of Glass Waste

2015 ◽  
Vol 663 ◽  
pp. 34-41 ◽  
Author(s):  
Fernanda Andreola ◽  
Isabella Lancellotti ◽  
Rosa Taurino ◽  
Cristina Leonelli ◽  
Luisa Barbieri
Keyword(s):  
Mechanical Properties ◽  
Environmental Impact ◽  
Economic Burden ◽  
Raw Materials ◽  
Glass Melting ◽  
Physical And Mechanical Properties ◽  
Ceramic Materials ◽  
Raw Material ◽  
Added Value ◽  
Glass Waste

Virgin raw materials can be partially replaced by glass waste in order to reduce the environmental impact being its recycling a significant problem for municipalities worldwide. In Italy in 2013, approximately 1,600,000 tons of container glass have been collected but it was not possible to recycle all of them in the glass melting process.This work is focused on the valorization of glass waste as raw material in new cement and ceramic products, to convert it from an environmental and economic burden to a profitable, added-value resource in the formulation of new mixes. Several parameters, such as grinding, forming, firing, etc. have been studied.It has been optimized the grinding and the reclaiming step of waste to obtain an alternative raw material for hot and cold consolidation processes. Chemical, physical and mechanical properties of products were carried out. The results show new real possibilities to use high amounts of glass waste as an alternative raw material in products consolidated either by hot or cold techniques, reducing the management problems of the glass waste.

scholarly journals STUDY OF RECEIVING WOOD AND PLANT PLASTICS WITHOUT BINDERS IN THE PRESENCE OF CATALYSTS OF POLYOXOMETALLATES TYPE

2018 ◽  
Vol 8 (1) ◽  
pp. 132-138
Author(s):  
Виктор Бурындин ◽  
Viktor Buryndin ◽  
Лариса Бельчинская ◽  
Larisa Belchinskaya ◽  
Андрей Савиновских ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Functional Groups ◽  
Hot Pressing ◽  
Raw Materials ◽  
Flexural Modulus ◽  
Chemical Activation ◽  
Physical And Mechanical Properties ◽  
Strength Properties ◽  
Raw Material ◽  
Plastic Properties

The possibility of obtaining wood and plant plastics without a binder (WP-WB) in the presence of a catalyst of man-ganese-containing sodium vanadomolybdophosphate has been investigated. The use of this catalyst makes it possible to reduce the temperature of hot pressing in closed molds from 1,800°C to 1,600°C. The fractional composition of the initial press raw material influences physical and mechanical properties of WP-WB. Higher values of the plastic properties are obtained by using a 0.7 mm fraction, which is associated with an increased specific surface area of the particles compared to 1.3 mm particles. The results has showed that the samples obtained by using the catalyst have increase in strength properties (flexural strength, flexural modulus, hardness) at lower pressing temperature, but reduction of water resistance performance has been observed . This is explained by the increase in the content of functional groups when using a catalyst. The process of obtaining plastic can be broken down into two successive stages: the first is hydrothermal destruction of lignin-carbohydrate complex (initial moisture of the press raw material is 12%, the temperature of hot pressing in closed molds is 160 ... .180 ° C) and partial chemical activation of lignin as a result of hydrogen peroxide and catalyst application; the second stage - formation of plastic with the formation of a network structure due to the formed functional groups. It is established that the values of physical and mechanical properties of WP-WB are higher than those of plastic obtained on the basis of plant raw materials (PP-WB). This can be explained by the fact that lignin of coniferous species has the guaiacylpropane structure, while plant raw material has a hydroxyphenylpropane structure

scholarly journals PENGARUH PENAMBAHAN PASIR PADA ENDAPAN LUMPUR DANAU LIMBOTO SEBAGAI PEMBUATAN BATU BATA

2018 ◽  
Vol 1 (2) ◽  
pp. 8
Author(s):  
Ilyas Ichsan
Keyword(s):  
Mechanical Properties ◽  
Quantitative Research ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Sand Mixture ◽  
The Right ◽  
Lake Sludge

Research on the use of limboto lake sludge as raw material for bricks by adding sand as a mixture of materials using experimental quantitative research. In the study used limboto lake silt with sand mixture with variations of2%, 5%, 7%, 10% and 15%. Related variables are physical and mechanical properties of bricks. The controlling variable is the materials used.The results showed that bricks with raw material from limboto lake sludge with a mixture of sand with variations of 2%,5%, 7%, 10% and 15% did not produce the right composition to have the same quality of bricks with bricks using raw materials clay. Penelitian pemanfaatan endapan lumpur danau limboto sebagai bahan baku batu bata dengan penambahan pasir sebagai bahan campurnya menggunakan penalitian kuantitatif yang bersifat eksperimen. Dalam penelitian digunakan bahan endapan lumpur danau limboto dengan campuran pasir dengan variasi 2%, 5%, 7%, 10% dan 15%. Variabel terkait berupa sifat fisik dan mekanik batu  bata. Variabel pengendali adalah bahan-bahan yang digunakan. Hasil penelitian menunjukan bahwa batu bata dengan bahan baku endapan lumpur danau limboto dengan campuran pasir dengan variasi 2%, 5%, 7% 10% dan 15% tidak  menghasilkan komposisi yang tepat untuk memiliki kualitas batu bata yang sama dengan batu bata yang menggunakan bahan baku tanah liat.

scholarly journals Baryshok. Enriching colour range of ceramic shapes on clay-based materials of low quality

2021 ◽  
Vol 18 (3) ◽  
pp. 318-329
Author(s):  
L. N. Tatski ◽  
L. V. Ilina ◽  
L. A. Baryshok
Keyword(s):  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Standard Methods ◽  
Ceramic Shard ◽  
Colour Palette ◽  
Modern Methods ◽  
Dry Pressing ◽  
Wall Materials ◽  
Clay Rocks

Introduction. This article discusses the possibility of expanding the colour palette of a ceramic shard. Due to the shortage of high-quality clay raw materials for the manufacture of plastic molded facing bricks, the problem of manufacturing ceramic wall materials by semi-dry pressing from low-quality clay rocks is urgent.Materials and methods. The main raw material was non-caking clay raw material with a low content of clay and a high content of silt particles. Some corrective additives were used to expand the colour palette of ceramic bricks. In the article, the authors used both standard methods for determining the physical and mechanical properties and modern methods for studying the phase composition of materials.Results. The possibility of enriching the colour range of a ceramic shard based on non-sintered clay raw materials has been experimentally confirmed, provided that the mixture contains flux additives. When receiving products with a clarified shard, light-colored flutes should be used.Conclusion. The possibility of enriching the colour range of a ceramic cap by adding white-burning clay, introducing bleaching and chromophore additives and technogenic products has been established. Due to the differences in the chemical composition of clay raw materials from individual deposits, an individual approach to each of them is required.

Raw mix for the production of ceramic paving stones by vibro pressing

2021 ◽  
Vol 2 (80) ◽  
pp. 256-263
Author(s):  
S. A. Montaev ◽  
◽  
B. T. Shakeshev ◽  
B. L. Idirisov ◽  
K. Zh. Dosov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Material Composition ◽  
Raw Material ◽  
Component Mixture ◽  
Mineralogical Characteristics ◽  
Two Component

The article presents the results of studying the physical-mechanical and chemical-mineralogical characteristics of raw materials and suggests a raw material composition based on clay for creating a technology of ceramic paving stones by vibropressing using talc rock. The compositions of ceramic compositions for the production of ceramic paving stones are studied, taking into account the dominant factors of a two-component mixture to improve the molding, drying and physical and mechanical properties of the finished product.

scholarly journals INFLUENCE OF THE GENETIC FEATURES OF SOILS ON THE PROPERTIES OF SOIL-CONCRETES ON THEIR BASIS

2020 ◽  
pp. 69-75
Author(s):  
T. Dmitrieva ◽  
V. Strokova ◽  
A. Bezrodnykh
Keyword(s):  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Road Construction ◽  
Reinforced Soil ◽  
Soil Reinforcement ◽  
Production Costs ◽  
Forming Process ◽  
Main Hypothesis ◽  
Stabilized Soil ◽  
Clay Rocks

in order to form strong soil-concrete structures in parallel with the introduction of binder, an additive with a multicomponent composition that is activating the structure-forming process should be applied. Such additive is usually called stabilizer of soil, its introduction allows achieving a positive effect for soils with a high proportion of finely dispersed fraction in its composition. The article considers the main aspects of use in road construction of complex soil reinforcement by introducing a stabilizer and binding component. This technology will solve the problems of deficiency of high-quality traditional raw materials, lead to better physical and mechanical properties, increase labor productivity and reduce production costs. As a result of the carried out studies, principles for improving the quality characteristics of reinforced soil were developed, taking into account the mineral composition of clay raw materials. As the main hypothesis of the study an increase in the hydrophobicity of stabilized soil by blocking the hydrophilic centers of clay rocks should be marked. This circumstance helps to reduce the consumption of cement in the reinforced soil without reducing the operational and physical-mechanical characteristics. The dependence of the degree of effectiveness of the introduced stabilizing additive on the structural and chemical characteristics of clay rocks has been established, which decreases from montmorillonite and X-ray amorphous phases to kaolinite. Mixed layered formations, illite and chlorite act as intermediate minerals. Aluminosilicates act as the filler in this system that do not come into contact with the molecules of the stabilizer. To assess the degree of efficiency of interaction of the components of a soil-concrete mixture as an integral indicator it is necessary to use the cationic capacity of the soil.

Effects of Bamboo Age on the Strength of Board Made from Laccase-Treated Pleioblastus amarus Particle

2011 ◽  
Vol 80-81 ◽  
pp. 207-212 ◽  
Author(s):  
Jin Wang ◽  
Li Liu ◽  
Chun De Jin
Keyword(s):  
Mechanical Properties ◽  
Reactive Oxygen Species ◽  
Free Radicals ◽  
Raw Materials ◽  
Chemical Constituents ◽  
Reactive Oxygen ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Oxygen Species ◽  
Wet Process

The different age pleioblastus amarus particle were taken as the raw materials, and the wet-process bamboo powder-boards were made from the laccase-treated powder by hot pressing. The raw material chemical constituents were analyzed. The reactive oxygen species free radicals produced from the laccase-treated bamboo were detected by electron spin resonance. The physical and mechanical properties of the bamboo particleboards were measured. In order to provide some theoretical basis for producing bamboo particleboard by laccase activation, the relations between physical and mechanical properties of bamboo particle boards and chemical constituents, the reactive oxygen species free radicals were researched.

scholarly journals Effects of Lizardite Addition on Technological Properties of Forsterite-Monticellite Rich White Ceramics Prepared From Natural Magnesite and Dolomite

2020 ◽  
Author(s):  
Ahmed Manni ◽  
Achraf Harrati ◽  
Abdelilah El Haddar ◽  
Abdelwahed Chari ◽  
Ali Sdiri ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ceramic Industry ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Linear Shrinkage ◽  
Thermomechanical Properties ◽  
Raw Material ◽  
Technological Properties ◽  
X Ray Diffraction ◽  
Potential Use

Abstract Lizardite rich peridotite has never been used to prepare ceramic specimens, especially in Morocco. For this raison, potential use of naturally abundant lazirditic material from the Rif domain (NW morocco), as a supply for ceramic industry, has been evaluated. The effects of lizardite addition to magnesite and dolomite mixtures on the thermomechanical properties of the calcined ceramics were also detailed. To achieve this target, natural lizardite, magnesite and dolomite samples were collected in ultrabasic Beni Bousra massif. Those raw samples were used for the synthesis of a forsterite-monticellite rich ceramics. Both raw and sintered samples were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM) and fourier transform infrared (FTIR). Main physical and mechanical properties were assessed and correlated to their respective microstructural changes. The obtained results showed that both magnesite and dolomite were mainly composed of MgCO3 and CaCO3. In contrast, lizardite sample showed high amounts of silica, magnesia and iron oxide. Technological tests indicated that the prepared mixtures had increased flexural strengths. An increased amount of lizardite in the initial mixtures enhanced mechanical properties of the prepared ceramic specimens. The same data showed that lizardite has led to a decrease in linear shrinkage during calcination and subsequently, the production of ceramics with the required technological properties. Thus, the preparation of lizardite-based ceramics from the raw material deposits of the Rif area, Morocco, is technically feasible, economically justifiable and socially desirable due to the contribution to the economic growth of the raw materials sector, especially ceramic industry.

scholarly journals Engineering Composites Made from Wood and Chicken Feather Bonded with UF Resin Fortified with Wollastonite: A Novel Approach

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 857 ◽  
Author(s):  
Hamid R. Taghiyari ◽  
Roya Majidi ◽  
Ayoub Esmailpour ◽  
Younes Sarvari Samadi ◽  
Asghar Jahangiri ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Density Functional ◽  
Raw Materials ◽  
Medium Density Fiberboard ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Composite Panel ◽  
Wood Composite ◽  
Negative Effects ◽  
Chicken Feathers

Wood-composite panel factories are in shortage of raw materials; therefore, finding new sources of fibers is vital for sustainable production. The effects of chicken feathers, as a renewable source of natural fibers, on the physicomechanical properties of medium-density fiberboard (MDF) and particleboard panels were investigated here. Wollastonite was added to resin to compensate possible negative effects of chicken feathers. Only feathers of the bodies of chickens were added to composite matrix at 5% and 10% content, based on the dry weight of the raw material, particles or fibers. Results showed significant negative effects of 10%-feather content on physical and mechanical properties. However, feather content of 5% showed some promising results. Addition of wollastonite to resin resulted in the improvement of some physical and mechanical properties. Wollastonite acted as reinforcing filler in resin and improved some of the properties; therefore, future studies should be carried out on the reduction of resin content. Moreover, density functional theory (DFT) demonstrated the formation of new bonds between wollastonite and carbohydrate polymers in the wood cell wall. It was concluded that chicken feathers have potential in wood-composite panel production.

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