Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на этот ресурс:
http://earchive.tpu.ru/handle/11683/74811
Полная запись метаданных
Поле DC | Значение | Язык |
---|---|---|
dc.contributor.author | Shilko, Evgeny Viktorovich | en |
dc.contributor.author | Konovalenko, Igor Sergeevich | en |
dc.contributor.author | Konovalenko, Ivan Sergeevich | en |
dc.date.accessioned | 2023-03-12T08:32:32Z | - |
dc.date.available | 2023-03-12T08:32:32Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Shilko, E. V. Nonlinear Mechanical Effect of Free Water on the Dynamic Compressive Strength and Fracture of High-Strength Concrete / E. V. Shilko, I. S. Konovalenko, I. S. Konovalenko // Materials. — 2021. — Vol. 14, iss. 14. — [4011, 34 p.]. | en |
dc.identifier.uri | http://earchive.tpu.ru/handle/11683/74811 | - |
dc.description.abstract | It is well-known that the effect of interstitial fluid on the fracture pattern and strength of saturated high-strength concrete is determined by qualitatively different mechanisms at quasi-static and high strain rate loading. This paper shows that the intermediate range of strain rates (10−4 s−1 < ε˙ < 100 s−1) is also characterized by the presence of a peculiar mechanism of interstitial water effect on the concrete fracture and compressive strength. Using computer simulations, we have shown that such a mechanism is the competition of two oppositely directed processes: deformation of the pore space, which leads to an increase in pore pressure; and pore fluid flow. The balance of these processes can be effectively characterized by the Darcy number, which generalizes the notion of strain rate to fluid-saturated material. We have found that the dependence of the compressive strength of high-strength concrete on the Darcy number is a decreasing sigmoid function. The parameters of this function are determined by both low-scale (capillary) and large-scale (microscopic) pore subsystems in a concrete matrix. The capillary pore network determines the phenomenon of strain-rate sensitivity of fluid-saturated concrete and logistic form of the dependence of compressive strength on strain rate. Microporosity controls the actual boundary of the quasi-static loading regime for fluid-saturated samples and determines localized fracture patterns. The results of the study are relevant to the design of special-purpose concretes, as well as the assessment of the limits of safe impacts on concrete structural elements. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | MDPI AG | en |
dc.relation.ispartof | Materials. 2021. Vol. 14, iss. 14 | en |
dc.rights | info:eu-repo/semantics/openAccess | - |
dc.rights | Attribution-NonCommercial 4.0 International | en |
dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0/ | - |
dc.source | Materials | en |
dc.subject | бетон | ru |
dc.subject | пористость | ru |
dc.subject | проходимость | ru |
dc.subject | фильтрация | ru |
dc.subject | динамическая нагрузка | ru |
dc.subject | прочность на сжатие | ru |
dc.subject | компьютерное моделирование | ru |
dc.subject | water-saturated concrete | en |
dc.subject | two-scale porosity | en |
dc.subject | permeability | en |
dc.subject | fluid filtration | en |
dc.subject | dynamic loading | en |
dc.subject | fracture | en |
dc.subject | compressive strength | en |
dc.subject | computer simulation | en |
dc.subject | discrete element method | en |
dc.subject | coupled poroelastic model | en |
dc.title | Nonlinear Mechanical Effect of Free Water on the Dynamic Compressive Strength and Fracture of High-Strength Concrete | en |
dc.type | Article | en |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dcterms.audience | Researches | en |
local.description.firstpage | 4011 | - |
local.filepath | reprint-nw-39383.pdf | - |
local.filepath | https://doi.org/10.3390/ma14144011 | - |
local.identifier.bibrec | RU\TPU\network\39383 | - |
local.identifier.perskey | RU\TPU\pers\35909 | - |
local.identifier.perskey | RU\TPU\pers\35818 | - |
local.identifier.perskey | RU\TPU\pers\37812 | - |
local.issue | 14 | - |
local.localtype | Статья | ru |
local.volume | 14 | - |
dc.identifier.doi | 10.3390/ma14144011 | - |
Располагается в коллекциях: | Репринты научных публикаций |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
---|---|---|---|---|
reprint-nw-39383.pdf | 9,05 MB | Adobe PDF | Просмотреть/Открыть |
Все ресурсы в архиве электронных ресурсов защищены авторским правом, все права сохранены.