Percolation Model of Composites: Fraction Clusters and Internal Boundaries

Herega, Alexander; Vyrovoy, Valery; Pysarenko, A.

doi:10.5923/j.cmaterials.20120206.05

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Для изучения структуры промежуточной асимптотики, строения и свойств перколяционных кластеров на поверхности и в объеме твердых тел разработана полифункциональная перколяционная модель [4][5][6][7]. Модель предназначена для изучения перколяционных кластеров, построенных методом Монте-Карло по широкому спектру алгоритмов, что позволяет использовать ее для изучения разнообразных явлений и процессов, таких как прыжковая проводимость в твердых телах, критические явления в кинетике твердотельных химических реакций, аномальная диффузия, деструкция материалов и другие.…”

Section: комплексная перколяционная модель структуры материалаunclassified

Physical Aspects of Self-Organization Processes in Composites. 1. Simulation of Percolation Clusters of Phases and of Inner Boundaries

Herega

2013

Nanomechanics Sci Technol Int J

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Section: комплексная перколяционная модель структуры материалаunclassified

Physical Aspects of Self-Organization Processes in Composites. 1. Simulation of Percolation Clusters of Phases and of Inner Boundaries

Herega

2013

Nanomechanics Sci Technol Int J

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“…The ideas about the nature of acoustic processes in hardening composites can be built on the basis of the percolation models [2]. During the process of setting, the structure formation of the material takes place, starting with the formation of the primary skeleton formed by microcrystals of the new growths, particles of aggregates, additives and aggregate granules, connected crystal contacts and adhesive bonds.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Control of the Formation of Gypsum Binders

Kersh

Колесников

Xlytsov

et al. 2019

MSF

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This paper presents the research method of hardening process of gypsum binders and composites, based on them, using the ultrasonic method. Modern construction composites, based on higher water resistance gupsym, contain the coarse aggregate particles, giving them heat and sound insulating properties. One of the frequent purposes, designing such composites, is the slowdown of the processes of setting, so it allows the builders to work with the material for a sufficiently long period. The use of standard control penetration methods of the setting processes for the considered composites becomes difficult because of the presence of course particles in the binder paste. The ultrasonic method is proposed to use alternatively to study the process of setting. For its implementation, the technique has been developed, based on the use of ultrasound systems for quality control of concrete products. The transit time of ultrasonic signals through the layer of hardening binder paste with the fixed thickness was measured in a regular intervals until completely setting. On the basis of the obtained data, the ultrasound velocity was calculated and the setting time was determined. For this purpose, a differential curve of the time of ultrasound transmission was plotted, and the period was considered, at which the transition to the steady-state condition was carried out, it is equivalent to the end of the setting. The initial setting was determined by the first trip of the measuring equipment, corresponding moment of the formation of the primary crystal structure of the composite, which has sound-transmission properties. To verify the values of the setting time, the simultaneous measurement of the plastic strength of the model system was used. The moments of the beginning and the end of the setting, as well as the ultrasound velocities which were typical for these moments, were determined with the plastic strength. The obtained velocity values allowed to find the setting times of other composites. The actual setting time is estimated based on the values, obtained by all the available methods. The model, based on percolation theory, has been proposed for analyzing the physicochemical phenomena during the setting.

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Percolation Model of Composites: Fraction Clusters and Internal Boundaries

Cited by 2 publications

References 13 publications

Physical Aspects of Self-Organization Processes in Composites. 1. Simulation of Percolation Clusters of Phases and of Inner Boundaries

Physical Aspects of Self-Organization Processes in Composites. 1. Simulation of Percolation Clusters of Phases and of Inner Boundaries

Ultrasonic Control of the Formation of Gypsum Binders

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