Hydraulic and Thermal Conductivities of Kaolin–Silica Mixtures under Different Consolidation Stresses

Keunbo Park, Junhwan Lee, Hyung Koo Yoon, Dongwook Kim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Stable backfill materials for the heat sensitive structures of buried power cables, hot water pipes, and gas pipelines are suggested to have low permeability and high heat transfer characteristics. The hydraulic and thermal conductivities of backfill materials or clay liners are important parameters in proper design and construction of geotechnical structures involved with heat transfers. In this study, to investigate the optimal natural backfill or liner materials, thermal and hydraulic conductivities of kaolin–silica mixtures examined based on the results from laboratory tests under different consolidation conditions. From the experiment results, the thermal conductivity increases while hydraulic conductivity decreases with increasing density during consolidation process. As a result, back-fill materials with high kaolin content under low consolidation stress were desirable materials for burial of heat sensitive structures.

Original languageEnglish
Pages (from-to)532-541
Number of pages10
JournalMarine Georesources and Geotechnology
Issue number6
Publication statusPublished - 2016 Aug 17

Bibliographical note

Publisher Copyright:
© 2016, Copyright © Taylor & Francis Group, LLC.

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering


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