Thermal performance analysis of hollow cellular concrete block air convection embankment for cold regions

Wu, Hanli; Zhang, Xiong; Liu, Jenny

doi:10.1016/j.coldregions.2022.103733

Cited by 6 publications

(8 citation statements)

References 18 publications

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“…The length of the pavement structures in the driving direction was 3.6 meters. The material properties were provided in previous publications [7,13]. Figure 2 shows the profiles of the cellular concrete interlayers and the details of the configurations and dimensions of the cellular concrete blocks.…”

Section: Computational Model Descriptionmentioning

confidence: 99%

“…To improve the overall performance of the pavement structures, support the granular base, and enhance the drainage capabilities, the top and bottom surfaces of the block interlayer were covered with a novel wicking fabric introduced by the research team [14]. A more detailed description of the hollow cellular concrete ACE was provided in a previous publication [7].…”

Section: Computational Model Descriptionmentioning

confidence: 99%

“…For the pavement structures, the initial temperatures were set at 15°C, approximately reflecting the average environmental temperature on July 1 in Fairbanks, Alaska. These computations were performed over a ten-year service time using a daily time step, as documented in a previous study [7].…”

Section: Initial Conditionsmentioning

confidence: 99%

“…However, the desired crushed rocks are not easily accessible in the interior regions of Alaska [6]. Previous studies proposed using well-designed hollow cellular concrete blocks as alternative materials for ACE to maximize the performance benefits and facilitate future implementation and field construction [7]. However, the mechanical behaviors of the proposed structures and ice-rich subgrade require further investigation.…”

Section: Introductionmentioning

confidence: 99%

“…Figure1. The geometry of the pavement infrastructure[7]. Figure2shows the profiles of the cellular concrete interlayers and the details of the configurations and dimensions of the cellular concrete blocks.…”

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confidence: 99%

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Thermo-mechanical Stability Analysis of Hollow Cellular Concrete Block Air Convection Embankments for Cold Regions

Wu,

Zhang,

Liu

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Crushed-rock air convection embankment (ACE), as a highly open-graded porous medium, has been used to mitigate the thaw settlement of pavement structures in permafrost regions. Previous studies have revealed that cellular concrete has significant potential as a cost-effective material for ACE to solve the problem of crushed rock shortage in interior Alaska and improved the thermal stability of pavement structures in cold climates. The design configurations of the hollow cellular concrete block ACE were further designed to maximize the performance benefits and facilitate future implementation and field construction. However, the mechanical behaviors of the proposed structures and ice-rich subgrade were still unknown. In this study, a thermo-mechanical coupling model was developed to evaluate the thermal effect on the long-term mechanical stability of the selected pavement structures and subgrade soils. The results indicated that the thermal stability of the proposed hollow cellular concrete block ACEs was superior to that of the conventional crushed-rock ACE. The maximum thaw settlement of the proposed hollow cellular concrete block ACE was only 13.4% that of the conventional crushed-rock ACE. Thermal and mechanical analyses showed that the proposed cellular concrete ACEs have a significant advantage over conventional crushed-rock ACE.

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Section: Computational Model Descriptionmentioning

confidence: 99%

Section: Computational Model Descriptionmentioning

confidence: 99%

Section: Initial Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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