Selection of Structures of the Activated Mineral Powders With Use of a Method of Planning of Experiment

Galdina, V.D.; Черногородова, Мария Сергеевна

doi:10.26518/2071-7296-2017-2(54)-90-98

Cited by 5 publications

(4 citation statements)

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“…The activating mineral additive was chrysotile asbestos of A-7-300 grade according to GOST 12871-93*, which is the ultrabasic fibrous material and consists of hydrous magnesium silicate 3MgO•2SiO2•2H2O. BND 60/90 bitumen in accordance with GOST 22245-90* and cationic surface acting agents -BAP-DS-3 bitumen adhesive additive were used as the activating organic additives [11]. Mineral powders were obtained in the laboratory ball mill during mix grinding of raw materials preheated to the temperature from 140 to 150 °C.…”

Section: Resultsmentioning

confidence: 99%

“…Regression equations and graphical dependences showing the influence of the main independent factors on the mineral powders properties were obtained [12] (4) where P is porosity, % by volume; BC is the bitumen content index, g/100 cm 3 ; WR is the water resistance coefficient; S is swelling, % by volume; A is asbestos, % of the fly ash mass; B is bitumen, % of the fly ash mass; SAA is the surface active agent, % of the fly ash mass. The algorithm [18] and calculation program [19,21] have been developed for the computer automated selection of the activated mineral powders with the specified technical properties. FarEastCon -Materials and Construction II…”

Section: Resultsmentioning

confidence: 99%

“…The use of modern digital electronic computers makes it possible to automate the selection process of the multicomponent mixtures optimal compositions [9,10]. The mathematical models allowing to optimize the powders compositions are obtained for the activated mineral powders based on fly ash [11]. However, the software for the automated selection of the activated mineral powders compositions by the personal computer has not been developed.…”

Section: Introductionmentioning

confidence: 99%

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Computer Modelling when Selecting the Activated Mineral Powders Compositions

Galdina

Galdin

2020

MSF

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When selecting the compositions and studying the properties of the activated mineral powders based on superacid fly ash, mineral and organic activating agents, the computer modelling was performed. The activated mineral powders compositions corresponding to the properties of GOST 32761 2014 requirements to the MP-1 activated mineral powders of carbonate rocks were selected using the experiment mathematical planning method. When processing the experimental data for obtaining the adequate mathematical model, optimizing the compositions and constructing the graphical dependencies, the Maple package was used. The software for the personal computer including the algorithm and se-lection program of the activated mineral powders compositions was developed. The software makes it possible to automate the calculation of the activated mineral powders formulas with the specified technical properties.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computer Modelling when Selecting the Activated Mineral Powders Compositions

Galdina

Galdin

2020

MSF

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“…The mathematical models are developed for some of road and building materials with application of a method of design of experiments [13,16,17,18,19,20,21]. They will allow to optimise compositions and to gain more vast information on behaviour of learnt installation, than at posing of traditional passive experiment.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Temperatures of Hashing Asphaltic Concrete Mixes Taking into Account the Structural Type of Bitumen

Galdina

Galdin

2019

MSF

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Researches by definition of optimum temperatures at hashing asphaltic concrete mixes on bitumens of different structural types with application of a method of mathematical designing of experiments are presented. Varied factors at manufacturing asphaltic concrete mixes were an index of a penetration of bitumen as the characteristic of a structural type of bitumen, the maintenance of bitumen and temperature of hashing of mixes. Processing of results of experiment is executed with application of computer technologies by means of a package of applied programs Maple. Mathematical models of physicomechanical properties of asphaltic concretes in the form of the equations the regressions reflective link between investigated properties of asphaltic concretes and varied factors are received. It is determined that at reduction of an index of a penetration and a rise of temperature of mixing strength of an asphaltic concrete increases. At a rise of temperature of hashing and increas asphalt content in mixes the water-resistance of an asphaltic concrete increases. On extreme dependences of indicators of durability at a tensioning and a tension in bending from hashing temperature optimum temperatures of hashing asphaltic concrete mixes are defined. It is established that optimum temperatures of hashing depends on an index of a penetration of bitumen and raise at its reduction.

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Simulation of current output during chrome plating of parts for hardening and car parts restoration

2020

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Introduction. Conducting an experiment when conducting research on electroplating coatings requires a lot of time and energy. To reduce the number of experiments performed, it is necessary to conduct mathematical modeling of the experiment to reduce the number of experiments performed and reduce it to a specific algorithm to obtain reliable and accurate data. The obtained reliable data will allow to get good results in studies of obtaining chrome coatings, with maximum performance, including current output.Materials and methods. To conduct the research, the necessary equipment for obtaining electroplating coatings, developed a new electrolyte composition for obtaining high-quality high-performance chrome precipitation, as well as the Statistica 13.0 program, which allowed us to reduce the time for calculations and building the necessary graphs, was used.Results. The analysis of methods and methods of mathematical analysis of the results obtained in order to process them and build a model showed that with a confidence regression coefficient of 0.95, it is most preferable to study the effect of the composition of the chromating electrolyte on the current output, in the range of current density values from 125 ... 250 A / dm2 , the amount of hydrofluoric acid 0.6...1.2 g / l and the operating temperature of the electrolyte 16 ... 27 o C.Discussion and conclusion. As a result of the obtained mathematical model, it can be argued that studies of the influence of the electrolyte composition on the current density will allow to obtain reliable data with the least number of experiments. At the same time, it can also be argued that it is possible to obtain an even greater current output if additional research is carried out with a change in factors up or down. However, it is not known how the quality of the coating and the adhesion to the base of the part will change, which is an important factor in obtaining wearresistant electroplating.

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Selection of Structures of the Activated Mineral Powders With Use of a Method of Planning of Experiment

Cited by 5 publications

References 0 publications

Computer Modelling when Selecting the Activated Mineral Powders Compositions

Computer Modelling when Selecting the Activated Mineral Powders Compositions

Optimization of Temperatures of Hashing Asphaltic Concrete Mixes Taking into Account the Structural Type of Bitumen

Simulation of current output during chrome plating of parts for hardening and car parts restoration

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