Optimization of foamed plastic technology

Kozlov, Sergey; Efimov, Boris; Bobrova, Ekaterina; Zinovieva, Ekaterina; Zhukova, Ekaterina

doi:10.1051/e3sconf/20199706010

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The experience of using foamed polyethylene in central Russia made it possible to formulate recommendations for the formation of an effective insulating coating [12][13][14]. It is important that the basic principles of the technology based on mechanical fastening of insulating sheets (rolls) and welding of their joints with hot air have already been implemented at dozens of facilities throughout the country.…”

Section: Methodsmentioning

confidence: 99%

Insulation systems for structures on pile supports

et al. 2021

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Construction on problem soils or in permafrost conditions involves using of pile foundations with a ventilated space under the floor structure. In this case, additional thermal insulation is required under the first-floor structure (above the ventilated space). This problem is com-pounded by construction in cold regions. The goal of research was to develop insulation systems for buildings on pile foundations for different climatic zones, including conditions of the arctic region and other regions with a predominance of ever-frozen ground. With the help of the THERM computer program, the conditions of bidimensional heat interchange in the enclosing structures of a building with pile foundation were simulated. The construction of such buildings is practiced on problem soils. The resulting models were analyzed in terms of the thermophysical characteristics of the structures. As a result, the optimal version of the insulation system was chosen, effective both in the climatic conditions of the midland and in the especially cold conditions of Yakutia and Trans-Polar region (The Subarctic). This system included insulation with mineral wool slabs along the facade walls, with extruded polystyrene (XPS) foams along the basement part and the floor structure, and with roll polyethylene (PE) foams (with the formation of a seamless insulation shell) along the ventilated space under the floor structure and above, on top of insulation boards.

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Section: Methodsmentioning

confidence: 99%

Insulation systems for structures on pile supports

et al. 2021

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“…In this case, a seamless insulating shell based on polyethylene foam performs the function of protection from the heat of the environment. The presence of preserved snow in early autumn allows opening the ski season in mountain areas one month earlier, which increases the profitability of mountain-sports tourism [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Modified Polyethylene Foam for Critical Environments

Ter-Zakaryan¹,

Zhukov

Bessonov

et al. 2022

Polymers

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One of the most important priorities for all countries with property beyond the Arctic Circle and territories located in permafrost areas is the development of special construction technologies and systems. The required conditions are met by insulation systems based on seamless insulation shells made of polyethylene foam. The study of the strength and performance properties of polyethylene foam and its combinability was carried out according to standard methods and using the methods of experimental design and the analytical processing of the results. The change in material properties at negative temperatures was determined based on the results of climatic tests, followed by an evaluation of creep under load. The evaluation of the effectiveness of the design solutions was carried out using special computer programs. It was found that the performance characteristics of products made of polyethylene foam (rolls, mats) meet the requirements for insulation materials used at temperatures down to −60 °C. The resulting material is moderately combustible, which must be taken into account when developing recommendations for its use in insulation systems. A nomogram has been developed that makes it possible to predict the properties of a material and solve formulation problems. Insulation systems were developed, and a visualisation of the thermal fields of the insulation systems of the external walls and ceilings of a building was carried out.

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“…Certain provisions of the system analysis are implemented in the study of recipes and technologies of building materials for various purposes and various material composition from heat-insulating products to heat-insulating and structural concrete. Modern realities, in which the construction complex is developing, suggest setting new tasks in related areas of research, including utilization of by-products of construction materials production and waste obtained as a result of demolition of construction objects [3][4][5]. Dispersed reinforcement with natural, synthetic, or mineral fibers can significantly modify the properties of the finished product [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

System Analysis of Technological Processes

Жуков¹,

Bobrova²,

Popov³

et al. 2021

IJCCSE

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The article discusses ways to solve engineering problems in the study of technological processes using methods of system analysis. The essence of this method is to study the technology as a cybernetic system with an assessment of the" reactions” of this system to external influences formed during an active experiment. At the same time, optimization problems are solved analytically. Analytical optimization is based on two main principles. The regression equations obtained as a result of processing experimental data and testing statistical hypotheses are models that adequately describe real processes. Each of these equations is an algebraic function of several variables, to which methods of mathematical analysis are applicable, including the study of extremums of functions in partial derivatives. The next step is to develop a process algorithm and develop computer programs that allow you to select the composition and predict the properties of the product. As an engineering interpretation, it is possible to construct optimized nomograms that allow solving both direct and inverse problems; that is, predicting the result or selecting technological factors. The research methods described in the article are implemented in the study of technologies of cellular concrete, foam concrete, cement-polymer concrete and products made of mineral wool and foam glass. As an example, the article considers the optimization of the selection of the composition of fine-grained concrete reinforced with chopped glass fiber. The implementation of the developed method allowed us to determine the optimal value of the determining parameters, including the consumption of fiber and plasticizer, as well as to form a method for studying the properties of products.

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Optimization of foamed plastic technology

Cited by 6 publications

References 4 publications

Insulation systems for structures on pile supports

Insulation systems for structures on pile supports

Modified Polyethylene Foam for Critical Environments

System Analysis of Technological Processes

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