التفاصيل البيبلوغرافية
| العنوان: |
Monitored Thermal Performance of Varying Embankment Thickness on Permafrost Foundations. |
| المؤلفون: |
De Guzman, E. M. B., Alfaro, M., Arenson, L. U., Doré, G. |
| المصدر: |
ASCE Proceedings of the International Conference on Cold Regions Engineering; 2019, p128-136, 9p |
| مستخلص: |
Construction of highway embankments vary in thickness along its planned alignment to maintain horizontal and vertical road geometry requirements. In regions of continuous permafrost, however, the thickness of the overlying embankment greatly impacts the thermal regime of the frozen foundation soil. Thick embankments, exceeding 5 m, usually provide considerable thermal insulation where the frozen soil used to construct the embankment remains frozen in the core, while thin embankments, usually less than 2 m thick, can contribute to permafrost degradation. Climate boundary conditions also play a significant role in the thermal performance of these embankments. In order to study the thermal impact of embankment thickness on permafrost degradation and thermal embankment performance, test sections along the newly-constructed Inuvik-Tuktoyaktuk Highway in the Northwest Territories, Canada, were instrumented with thermistor strings to measure temperature readings at different locations in the embankment fill and foundation soil. This paper presents the results of the monitored temperature for two phases of instrumentation in April 2015 and April 2017 for the thick and thin embankments, respectively. Thermal numerical modelling using site climate data showed considerable agreement with field values and provides confidence for future performance prediction. [ABSTRACT FROM AUTHOR] |
|
Copyright of ASCE Proceedings of the International Conference on Cold Regions Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
