Temperature and moisture monitoring in pavement and subgrade in Kazakhstan

Bagdat Burkhanbaiuly Teltayev

2023

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DOI 10.1201/9781003299127-8
Data confidence 70 medium
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Abstract

Some important results of long-term measurement and analysis of temperature and moisture in layers of pavement and subgrade in different regions of Kazakhstan are presented. Most of the measurements in natural conditions were carried out in the period from 2010 to 2022 using specially invented and designed measuring devices, the latest model of which is capable of storing and transmitting the information obtained over distances.The values ​​and peculiarities of the change in temperature and moisture in time and its distribution in depth are established. The processes of freezing and thawing in the subgrade have been studied. A map of the freezing depth of roads has been drawn. The content of unfrozen water was determined. The effect of temperature and moisture on stresses and strains at critical points of the pavement and subgrade was evaluated by calculations. Recommendations have been developed for design of pavement structures, taking into account temperature of an asphalt concrete layers and moisture content in subgrade.