ИССЛЕДОВАНИЕ ПРОНИКНОВЕНИЕ ВОДЫ В ЦЕМЕНТНЫЕ РАСТВОРЫ С ИСПОЛЬЗОВАНИЕМ РАДИОГРАФИИНА ТЕПЛОВЫХНЕЙТРОНАХ В РЕЖИМЕ РЕАЛЬНОГО ВРЕМЕНИ.
DOI:
https://doi.org/10.31489/2020No1/39-45Ключевые слова:
цементные растворы, нейтронная радиография, перенос влаги, поглощение воды.Аннотация
Water absorption into cement mortar with different water to cement ratio was studi"С помощью нейтронной радиографии,было изучено поглощение воды в цементный раствор с различным отношением воды к цементу, чтобы оценить долговечность и стабильность этих растворов. Во время поглощение воды образцами,регулярно были полученынейтрон-радиографические изображения по истечении времени поглощения. Временная эволюция положения фронта воды или глубина проникновения и распределение содержания воды вдоль направления потока были определены на основе различий во взаимодействиях нейтронов с различными компонентами цементных растворов и поглощенной воды. Полученные результаты обсуждались в рамках теории капилляров для получения характерных параметров распространения воды в цементных растворах. Было показано, что нейтронная радиография является мощным методом исследования переноса влаги в пористых средах. "d using neutron radiography in order to assess the durability and stability of these mortars. While the samples absorb water, neutron radiography images were acquired regularly as the absorption time elapses. The time evolution of water front position or penetration depth and the water content distribution along the flow direction were determined based on the specific differences in the interactions of neutrons with various components of the cement mortars and absorbed water. The obtained results were discussed in terms of the capillary theory to obtain the characteristic parameters of water propagation in the cement mortars. It’s shown that neutron radiography is a powerful method to study a moisture transport in porous media.
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