scholarly journals IMPROVING THE EFFICIENCY OF FIBRE CONCRETE PRODUCTION

2020 ◽  
pp. 4-9
Author(s):  
V. Nelyubova ◽  
V. Babaev ◽  
Nataliya Alfimova ◽  
S. Usikov ◽  
O. Masanin
Keyword(s):  
Building Materials ◽  
Production Efficiency ◽  
Raw Materials ◽  
Basalt Fiber ◽  
Operational Reliability ◽  
Fiber Reinforced Concrete ◽  
Technological Parameters ◽  
Optimal Method ◽  
Physicomechanical Characteristics ◽  
Concrete Production

fiber concrete is one of the types of effective building materials that ensure the operational reliability of structures due to a set of unique properties. However, the maximum physicomechanical characteristics of this type of products are achieved only if the fiber is evenly distributed in the concrete matrix and the optimum ratio of raw materials is reached. In this connection, the aim of the work was to increase the production efficiency of fiber-reinforced concrete by optimizing the formulation and technological parameters of its manufacture. The optimal method of introducing the fiber into the concrete mix and the type of superplasticizer were previously determined, which allowed ensuring the maximum physicomechanical characteristics of the products. Optimization of prescription parameters was carried out using the method of mathematical planning of the experiment, where the amount of cement, superplasticizer and basalt fiber were varied. After processing the results, the dependences of the compressive strength on variable factors were obtained, which would allow to select the optimal dosages of raw materials for given mechanical characteristics of the products.

Optimization of Formula and Technological Parameters of Fiber-Reinforced Concrete Manufacturing

2019 ◽  
Vol 974 ◽  
pp. 14-19
Author(s):  
V.B. Babaev ◽  
Natalia I. Alfimova ◽  
Victoria V. Nelubova ◽  
L.N. Botsman
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Mechanical Characteristics ◽  
Basalt Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Technological Parameters ◽  
Equal Distribution ◽  
Concrete Matrix ◽  
Physical And Mechanical Characteristics

The development of modern construction technologies requires the development of efficient building materials with a unique property set and the improvement of existing ones. Fiber-reinforced concrete is one of the types of effective composites that meets the specified requirements, ensuring the structures operation reliability. The difficulty of achieving its maximum physical and mechanical characteristics is due to the complexity of the fiber equal distribution in the concrete matrix. Studies aimed at the optimization of the formulation and technological manufacture parameters of fiber-reinforced fine concrete, have revealed that from the perspective of obtaining products with optimal physical and mechanical characteristics, it is most feasible to introduce the agglutinant sand (cement + sand) of pre-prepared suspension from fibers, water of mixing and naphthalene formaldehyde plasticizer. Optimal dosages of input products were also revealed (basalt fiber, cement, plasticizer), which made it possible to create mixes of fine concrete and products based on it with class B25-B60 for compressive strength and Btb2,8-Btb6,0 for bending, frost resistance not less than F300.

Experimental Study of the Effect of Water Reducer on the Plaster Board Production in Low Energy-Consumed Way

2011 ◽  
Vol 250-253 ◽  
pp. 969-973
Author(s):  
Jing Sun ◽  
Xiao Hong Cong ◽  
Hong Bo Liu ◽  
Li Sun
Keyword(s):  
Construction Industry ◽  
Production Technology ◽  
Building Materials ◽  
Production Efficiency ◽  
Raw Materials ◽  
Green Building ◽  
Reducing Agent ◽  
Production Costs ◽  
Gypsum Board ◽  
Production Conditions

As a green building material, the demand for plaster board is growing with the promotion of the wall materials reform policy and development of the construction industry in China. In terms of its production technology, the technique formula of the raw materials for gypsum board is not only the main factors to determine the quality, but also determine the use of equipment related to production technology. In this paper, according to the actual production conditions of Beijing New Building Materials Group Industrial Park in Zhuozhou, water-reducing agent is introduced in its raw materials and specific researches are made about the properties of gypsum when water reducer, foam, coagulant agent and other additives are mixed. The results show that the suitable water-reducing agent used in conjunction with other gypsum admixtures not only improve the quality, but also play an important role in saving energy, improving production efficiency, and reducing production costs.

Fine-Grained Fibre Concrete of Run-Of-Crusher Stone Using Volcanic Ash

2021 ◽  
Vol 1043 ◽  
pp. 61-65
Author(s):  
Tolya Khezhev ◽  
Aslan Kardanov ◽  
Eldar Bolotokov ◽  
Azamat Dottuyev ◽  
Ibrahim Mashfezh
Keyword(s):  
Reinforced Concrete ◽  
Raw Materials ◽  
Concrete Strength ◽  
Basalt Fiber ◽  
Strength Properties ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Fine Grained ◽  
Concrete Mixtures ◽  
Polyfunctional Additive

The results of the studies on the creation of self-compacting fine-grained fiber-reinforced concrete based on run-of-crusher stone with the use of a polyfunctional additive D-5 are presented. Compositions of self-compacting fine-grained fiber-reinforced concrete with the use of basalt fiber have been developed, which significantly reduce cement consumption and improve the characteristics of fine-grained concrete mixture and concrete. Using a polyfunctional additive D-5in mixtures makes it possible to increase the strength properties of fine-grained fiber-reinforced concrete while improving the concrete mixtures’ rheological characteristics. Replacement of cement up to 10% of the mass by ash fraction d<0.14 min fine-grained concrete mixtures does not cause a noticeable decrease in the concrete strength properties. The developed self-compacting fine-grained fiber-reinforced concretes have increased strength properties and have a low-cost price due to the use of local raw materials and run-of-crusher stone.

scholarly journals Sustainability Comparison for Steel and Basalt Fiber Reinforcement, Landfills, Leachate Reservoirs and Multi-Functional Structure

2019 ◽  
Vol 5 (1) ◽  
pp. 172 ◽  
Author(s):  
IfeOluwa B. Adejuyigbe ◽  
Paschal C. Chiadighikaobi ◽  
Donatus A. Okpara
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Construction Materials ◽  
Basalt Fiber ◽  
Steel Structures ◽  
Fiber Reinforced Concrete ◽  
Sustainable Construction ◽  
Tropical Region ◽  
Fiber Reinforced ◽  
Waste Products

To a large extend sustainable construction of any structure greatly depends on the materials used in its formation. Traditionally, materials such as bricks, mortar, steels are still important components of most buildings. But modern technology is equally changing how materials are created and used.Based on the above explanation, the objective of this paper was to compare the steel structures with basalt fiber reinforced concrete. As basalt fiber is still not wide spread, this paper focus on the advantages, usages and applications of basalt fiber reinforced concrete to solve construction and structural challenges. The method and analysis used in this paper was derived from research and works done by previous authors on similar topics. Previous research information show that producers and users of these materials make choice of building materials to depend on the area the structure is proposed to be built and on the taste and ideas given by the client. Their consideration is often devoid of environmental, psychological, social and economy factors. The research methods lead to the understanding on the use and importance of basalt fiber concrete for landfills, leachate reservoirs and multifunctional structure.This paper helps structural users and engineers to know that green materials with good environmental characteristics that support nature are being considered as best construction materials due to what they are composed of. Waste and cost are also crucial as far as construction materials are concern. Even now, management of waste products from landfills specially leachates requires better construction designs in tropical region like Nigeria. More so, in line with the recent safe the climate calls, efforts to select the kind of material used in raising structures are becoming unavoidable.

BUILDING MATERIALS BASED ON LIMESTONE DUST AND FINELY DISPERSED LIMESTONE

2020 ◽  
Vol 90 (4) ◽  
pp. 112-121
Author(s):  
N.V. LYUBOMIRSKIY ◽  
◽  
A.S. BAKHTIN ◽  
T.A. BAKHTINA ◽  
V.V. NIKOLAENKO ◽  
...  
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Average Density ◽  
Technological Parameters ◽  
Low Co2 ◽  
Physico Chemical ◽  
Construction Products ◽  
Shaft Furnaces ◽  
Limestone Dust ◽  
Recycled Material

The paper presents research on the development of building materials with low CO2 emissions based on industrial man-made materials. The optimal recipe-technological parameters for the production of materials based on lime dust generated by mechanical deposition in cyclones and bag filters of shaft furnaces, as well as finely divided marble-like limestone with a fraction of up to 5 mm were determined. Studies have shown that it is possible to obtain a building material with compressive strength of more than 40 MPa from this recycled material by forced carbonization for three hours. Moreover, to obtain such strength indicators, the optimal content of lime dust in the raw materials is in the range of 35-40% wt. when the water content of the mixture is 6-7% wt. The carbonized material obtained at the indicated technological parameters will have an average density of 1.95-2.0 g / cm3 and water absorption by weight of not more than 12%. Accordingly, the data obtained make it possible to judge the possibility of obtaining high-quality construction products with physico-mechanical, physico-chemical, hydrophysical, and other properties sufficient for building materials.

scholarly journals Production of environmentally friendly aerated concrete with required construction and operational properties

2018 ◽  
Vol 143 ◽  
pp. 02010 ◽  
Author(s):  
Evgeniya Tkach ◽  
Vladimir Solovyov ◽  
Semen Tkach
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Building Materials ◽  
Raw Materials ◽  
Environmentally Friendly ◽  
Industrial Wastes ◽  
Hazard Class ◽  
Concrete Production ◽  
Aerated Concrete ◽  
The Impact

The purpose of these studies is to justify the feasibility of recycling different types of industrial waste instead of conventional expensive raw materials in production of environmentally friendly aerated concrete with required construction and operational properties. The impact of wastes from various industries on the environmental condition of affected areas, as well as the results of their environmental assessment were analyzed to determine whether these wastes could be used in production of high-performance building materials. The assessment of industrial wastes in aerated concrete production suggests that industrial wastes of hazard class IV can be recycled to produce aerated concrete. An environmentally friendly method for large-scale waste recycling, including a two-step environmentally sustainable mechanism, was developed. The basic quality indicators of the modified aerated concrete proved that the environmental safety could be enhanced by strengthening the structure, increasing its uniformity and improving thermal insulation properties. The modified non-autoclaved aerated concrete products with improved physical and operational properties were developed. They have the following properties: density – D700; class of concrete – B3.5; thermal transmittance coefficient – 0.143 W/(m·°C); frost resistance – F75.

scholarly journals On the issue of expanding the base of mineral and complex additives for cement concrete

2019 ◽  
Vol 135 ◽  
pp. 01018
Author(s):  
Oleg Tarakanov ◽  
Elena Belyakova ◽  
Varvara Yurova
Keyword(s):  
Building Materials ◽  
High Efficiency ◽  
Materials Science ◽  
Raw Materials ◽  
Hydrate Formation ◽  
High Strength ◽  
Organic Additives ◽  
Cement Concrete ◽  
Concrete Production ◽  
Increased Strength

Modern materials science is characterized not only by the creation of high-strength building materials, but also by using a large number of raw materials and additives that improve the properties of concrete mixtures and concrete. The article considers the possibility of using both old and new generations of complex organomineral additives in concrete production. The nature of the effect of additives on the rheological behavior of cement systems and hydrate formation processes, as well as an assessment of the effect of mineral and organic additives on the composition of hydration products of cement systems, are revealed. Studies have shown that complex additives, which include hyper- and superplasticizers, lead to some slowdown in hydration and crystallization processes. The high efficiency of plasticizing additives helps to reduce water content, which in turn provides increased strength of cement concrete.

scholarly journals Using the calculation method for low-melting clay assessment

2018 ◽  
Vol 196 ◽  
pp. 04014
Author(s):  
Natalia Chumachenko ◽  
Vladimir Turnikov ◽  
Vladimir Kuzmin
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Size Composition ◽  
Program Assessment ◽  
Raw Material ◽  
Technological Parameters ◽  
Engineering Structures ◽  
Firing Range ◽  
Standard Assessment ◽  
Melted Material

Low-melting polymineral clays are widely used in building ceramics production. The properties of ceramic products depend on many factors. The paper describes properties of low-melting clay from Belebey deposit, Bashkiria. Using mathematical statistics methods, researchers make statistical analysis of grain size composition of clay raw material on Belebey brick factory and also analyze amount of sand additives and mixing moisture content. The study of general and technological properties of clay raw materials, and materials obtained from this raw material, was carried out in accordance with existing regulations using chemical, differential-thermal and non-standard methods. According to chemical analysis, non-standard assessment of clay raw materials was carried out by means of computer program "Assessment", developed at the Department of Building Materials Production and Engineering Structures. The method of calculating quantity and composition of melted material, formed in ceramic masses during firing, using known diagrams of aluminosilicate systems state is used. The assessment made it possible to determine maximum firing temperature and firing range and additives improving clinker formation. The studies show that calculation indicators are consistent with experimental data. They can be used for quick assessment of raw materials properties when changing its composition, and in adjustment of technological parameters of production.

scholarly journals DEVELOPMENT OF TABLET TECHNOLOGY QUALITY CONTROL BASED ON GERANIUM COLLINA (GERANIUM COLLINUM STEPH.)

2019 ◽  
pp. 92-96
Author(s):  
Zamira Tanirbergenovna Pazilbekova ◽  
Feruza Alisherovna Umarova
Keyword(s):  
Quality Control ◽  
Quality Assessment ◽  
Dosage Form ◽  
Raw Materials ◽  
Dosage Forms ◽  
Technological Parameters ◽  
Optimal Method ◽  
Dry Extract ◽  
Solid Dosage Form ◽  
Solid Dosage

The article presents scientific studies of dosage forms obtained on the basis of a plant growing on the Uzbekistan Geranim collina - (Geranium collinum Steph.) Studied obtaining a dry extract from a plant Geranium collina with different extractants, methods for its preparation, the optimal method for obtaining a dry extract is substantiated. The article also describes the phators that influence the production of dry extracts such as the choice of extractant, hydromodule, degree of grinding of raw materials, quality assessment and standardization. Based on the obtained dry extract of Geranium collina, a solid dosage form - tablets, was obtained. Their technological parameters were studied, as well as quality assessment and expiration dates. KEYWORDS: extractant, Geranim collina, dry exstrakt, tablets, percolation, tannins, hydromodule.

scholarly journals On the possibility of using lime dust for the production of building materials of forced carbonate hardening

2020 ◽  
Vol 315 ◽  
pp. 07008
Author(s):  
Aleksandr Bakhtin ◽  
Nikolai Lyubomirskiy ◽  
Sergey Fedorkin ◽  
Tamara Bakhtina
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Water Content ◽  
Building Materials ◽  
Raw Materials ◽  
Average Density ◽  
Technological Parameters ◽  
Shaft Furnaces ◽  
Recycled Material

The paper presents research on the development of building materials with low level of CO2 emissions based on technogenic recycled materials. The paper addresses the determination of optimal formulation and technological parameters of obtaining materials based on lime dust generated by mechanical deposition in cyclones and bag filters of shaft furnaces, as well as finely dispersed marble limestone with a fraction of up to 5 mm. Studies have shown that it is possible to obtain carbonized material with compressive strength of more than 40 MPa from this recycled material by forced carbonization used during three hours. Moreover, to obtain such numbers, the optimal content of lime dust in raw materials should be in the range of 35-40% wt. when the water content of the mixture is 6-7% wt. The carbonized material obtained with the indicated technological parameters will have an average density of 1.95-2.0 g/cm3 and water absorption by weight of not more than 12%.

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