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http://dx.doi.org/10.14190/JRCR.2015.3.1.072

Assessment on Applicability of Recycled Aggregates for Backfill Materials of Underground Transmission Lines Based on Field Demonstration Tests  

Kang, Sung-Chur (Yujin Geo Co., LTD.)
Lee, Kang-Ryel (Korea Electric Power Research Institute)
Ahn, Tae-Bong (Dept. of International Railroad Integrated system, Woosong Univ.)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.3, no.1, 2015 , pp. 72-83 More about this Journal
Abstract
Underground transmission lines always generate heat and transmit heat through surrounding backfill materials. Therefore, in the design of power lines it becomes a very crucial factor to transfer heat effectively into the neighbouring soils. In this study, in order to enhance field applicability of recycled aggregates for backfill material of transmission lines, quality criteria and construction criteria were proposed, and thermal stability of power lines through field demonstration tests were analyzed. In the field tests, two types of recycled aggregates and sand which is currently used for backfilling were compared in terms of thermal behaviour. Test results showed that recycled aggregates represented similar trends with sand in temperature and moisture content corresponding to time lapse and distance from the heat source. Consequently, recycled aggregates can be utilized for backfill materials of underground transmission lines as a substitute material of sands.
Keywords
Transmission lines; Recycled aggregates; Thermal stability; Backfill; Demonstration test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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