Электронный каталог НБ БНТУ

Статья

Estimation and methods of prediction for the structural and mechanical properties of rap-composites / B. M. Khroustalev [et al.]. – DOI 10.32014/2020.2518-170X.47 // Известия Национальной академии наук Республики Казахстан. Серия геологии и технических наук / гл. ред. Ж.М. Адилов. – 2020. – Т.2 №440. – P. 187-197. - Журнала нет в фонде библиотеки. – Пер. загл.: [Оценка и методы прогнозирования структурно-механических свойств РЭП-композитов]. – На англ. яз.

This article presents the study results of the processes of structure formation and analysis of the methodological evaluation features of strength and deformation properties of RAP-composites. New materials necessitate studying the peculiarities of their behavior in the temperature-time field in order to develop objective technical requirements for their physical and mechanical characteristics that allow them to provide the required values of strength and reliability. The classical method of applying the temperature-time analogy is valid in the linear domain for the analysis of relaxation curves at low levels of deformation or creep curves at low stresses.This thesis does not allow this theory to be used for the analysis of strength properties and other characteristics associated with the process of destruction of the composite material.Concretes of composite structure containing thermodynamically incompatible binders have nonlinear viscoelasticity and are thermorheologicalycomplex. For composite materials a reduction factor (the amount of displacement curves along the time or deformation speed axis) depends not only on temperature but also material properties, and stress state.This is due to the peculiarities of the structure of composite materials as a system with a complex set of elastic and viscous bonds, and therefore the reduction coefficient depends on the number of elastic bonds involved in the deformation process. The research is based on the principles of temperature-structural analogy, allowing predicting the properties of composites on organo-hydraulic binders. This makes possible directionally to design a cold mix and to determine the way of reaching a required materials property for construction of different layers of pavement. The proposed methodological principles of design are based on the determination of the optimal ratio of elastic and viscous bonds, considering the properties of RAP and the amount of cement. The use of this approach allows evaluating the potential maximum durability of composites, practicability of the introduction of various modifying components and the optimum content of the organic binder.

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общий = БД Труды научных работников БНТУ : 2020г.
труды сотрудников БНТУ = Строительный факультет : кафедра "Строительные материалы и технология строительства"
труды сотрудников БНТУ = Факультет транспортных коммуникаций : кафедра "Автомобильные дороги"
труды сотрудников БНТУ = Дорожное строительство. Дорожные машины (труды)
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общий = СТРУКТУРНО-МЕХАНИЧЕСКИЕ СВОЙСТВА