The effect of the iciness of the soil on the depth of thawing of the road base

Galkin, Aleksandr; Pankov, Vladimir

doi:10.7256/2453-8922.2022.2.38103

Cited by 5 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The impact of thermal conditions on reliability and safety of exploitation of civil engineering structures has been widely researched [1][2][3] and is in the focus of attention [4][5][6]. It was noted that to increase the reliability and safety of linear structures, such as roads, in the permafrost area, it is necessary to consider the influence of the thermal factor on the exploitation characteristics of the road surfaces and foundations during the design and construction stages [7][8][9]. To decrease the negative impacts of cryogenic processes it is proposed to use special thermal insulation structures [10][11][12] and mixtures of materials with the required thermal insulation and thermal accumulation properties [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Calculation of thermal conductivity coefficient of a binary mixture

Galkin

Pankov²,

Fedorov³

2023

E3S Web Conf.

View full text Add to dashboard Cite

A correct consideration of the thermal factors during the design phase of civil engineering structures in the permafrost area determines their reliable and safe exploitation. Among the important indicators in selection of design solutions is the thermal conductivity coefficient of the construction materials used. The thermal conductivity coefficient is usually chosen from reference tables, but when using mixtures, the thermal conductivity coefficient is determined through a calculation. The aim of the present research was to compare the calculated values of thermal conductivity coefficient of binary mixtures (a mixture of a binding material and a filler) obtained using Lichtenecker and Schwerdtfeger formulas. The comparison was conducted in the range of properties of materials used for thermal accumulation and thermal insulation mixtures. It was determined that for thermal accumilation binary mixtures the calculation results are quite similar within a wide range of initial values. For thermal insulation binary mixtures, the calculation results are significantly different. The divergencies are by hundreds of percents. At the current stage of research it is impossible to make a conclusion about suitability of either calculation method to determine the thermal conductivity of a thermal insulation binary mixture.

show abstract

Section: Introductionmentioning

confidence: 99%

Calculation of thermal conductivity coefficient of a binary mixture

Galkin

Pankov²,

Fedorov³

2023

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

Depth of Thermal Influence of Automobile Roads

Galkin

Pankov

2023

Lecture Notes in Networks and Systems

View full text Add to dashboard Cite

The Depth of the Zone of Thermal Influence of Highways

Galkin¹

2022

Урбанистика

View full text Add to dashboard Cite

The thermal regime of road surface and basements is an important factor determining their reliable and safe operation in the cryolithozone. The aim of the research was to quantify the possibility of replacing the layered environment of the road's soil base with an equivalent homogeneous soil with an average coefficient of thermal conductivity when calculating the depth of the road's thermal influence zone. Two methods of averaging the thermophysical properties of a layered medium are considered: weighted average and arithmetic average. Dependences are obtained for determining the degree of deviation of the properties and thicknesses of the layers of the soil base, in which both methods are acceptable for engineering calculations. As an example, the two-layer medium of the road base is considered. For the analysis, the classical formula of the depth of thermal influence was used, obtained from the solution by the integral method of the one-dimensional equation of unsteady thermal conductivity. Simple engineering formulas are given for the relative error in determining the values of the depth of thermal influence when using an equivalent layer of pavement in calculations. A concrete example of calculating the depth of the zone of thermal influence in the two-layer soil of the road base is considered. The equation of the functional relationship between the parameters characterizing the degree of deviation of the thickness and thermophysical properties of individual layers from each other is obtained, which provides an error in the calculations of the depth of the zone of thermal influence less than the permissible value. The results of numerical calculations are presented in the form of 2D and 2D graphs, which allow us to visually assess the influence of the range of changes in the values of the thermal conductivity coefficients of individual soil layers on the legality of using various methods of constructing an equivalent single-layer road foundation structure.

show abstract

The effect of the iciness of the soil on the depth of thawing of the road base

Cited by 5 publications

References 4 publications

Calculation of thermal conductivity coefficient of a binary mixture

Calculation of thermal conductivity coefficient of a binary mixture

Depth of Thermal Influence of Automobile Roads

The Depth of the Zone of Thermal Influence of Highways

Contact Info

Product

Resources

About