Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет

Постоянный URI для этого сообществаhttps://cris.qyzpu.kz/handle/123456789/1

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Автор: search.filters.author.Bagdat Burkhanbaiuly TeltayevТема: search.filters.subject.freeze-thaw cycles

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    Тип записи:Публикация,
    Characteristics of cyclic freeze-thaw of a city road
    (Elsevier BV, 2026-04-14)
    Bagdat Burkhanbaiuly Teltayev
    ;
    Yerbol Aitbayev
    ;
    Azamat Zhaisanbayev
    ;
    Aizhan Muta
    The purpose of this paper is to experimentally establish quantitative indicators, relationships and dependencies on the depth of characteristics (amount, duration and minimum temperature) of freeze-thaw cycles of a road in the climatic conditions the Almaty city located in the south-eastern region of Kazakhstan. Monitoring of temperature in the road was carried out using a special measuring system. It was found that the largest amount of FTCs, equal to 76, occurs on the pavement surface and decreases with depth (up to 6 at a depth of 28 cm); the absolute value of the lowest minimum temperature of FTCs also decreases with depth: -17.9 °C on the pavement surface and –0.3 °C at a depth of 69 cm. The depth of 21.5 cm is designated as the boundary, above which the FTCs characteristics are determined by daily temperature fluctuations and below which they are determined by seasonal and annual temperature fluctuations; at the boundary depth the maximum, minimum and average durations of FTCs have the greatest values (1039.5, 3.3 and 521.4, respectively). In the region under consideration and in others with similar climatic conditions, when assessing the strength and durability of asphalt concretes taking into account cyclic freezing and thawing, it is recommended to assign the amount and minimum temperature of FTCs according to the results obtained in the paper; the duration of FTCs is taken to be equal to 20 h; it is recommended to conduct laboratory tests on asphalt concrete samples when they are fully saturated with water.
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    Тип записи:Публикация,
    Distribution of temperature in pavement and soil base in the South-Eastern Kazakhstan
    (Elsevier BV, 2026-04-22)
    Bagdat Burkhanbaiuly Teltayev
    ;
    Aizhan Muta
    The paper is devoted to an experimental study of temperature distribution in a road pavement and its soil base in the climatic conditions of the south-eastern Kazakhstan. The temperature was measured by a monitoring system that included sensors and was powered by solar panels. The characteristics of changes in air temperature, asphalt concrete pavement surface, pavement layers and soil base points are analyzed and described. Using a model and the Stefan-Boltzmann law direct, scattered and summary solar radiations were determined. Correlations were established between the amounts of scattered and summary solar radiations and the maximum daily surface temperature of the asphalt concrete pavement. A graph of freezing and thawing of the road pavement and soil base was constructed and its characteristics were determined.
    Цитирования (OpenAlex) 2