Investigating the Influence of Water Salinity Concentrations on Thermal Conductivity of Soils for Buried Infrastructure Systems Reliant on Heat Transfer
Publication: Geo-Congress 2024
ABSTRACT
Thermal conductivity of soils is a critical soil property in geotechnics, which provides essential information about the soil’s ability to conduct heat transfer. Erroneous data can be responsible for the inefficient design of infrastructure systems which rely on heat transfer, such as buried cabling, piping, and geothermal systems. This study investigated the influence of variations in salinity concentrations and soil type on soil thermal conductivity, considering potential implications for areas with a high water table or flooding events, as well as offshore wind projects. A total of 23 experimental tests were performed, and resulting 36 thermal conductivity data points were recorded. The results indicate that the salinity concentration or type of soil on site can increase (silty clay) or decrease (sandy soil) soil thermal conductivity at varying moisture contents during testing, which could provide a more informed, economical design for buried infrastructure that relies on heat transfer through soils.
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REFERENCES
ASTM. (2019). Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass. ASTM Standard D2216-19, ASTM International, West Conshohocken, PA. https://doi.org/10.1520/D2216-19.
ASTM. (2021a). Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis. ASTM Standard ASTM D6913/D6913M-17, ASTM International, West Conshohocken, PA. https://doi.org/10.1520/D6913-04R09E01.
ASTM. (2021b). Standard Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soils Using the Sedimentation (Hydrometer) Analysis. ASTM Standard D7928-21e01, ASTM International, West Conshohocken, PA. https://doi.org/10.1520/d7928-21e01.
ASTM. (2021c). Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)). ASTM Standard D698-12, ASTM International, West Conshohocken, PA. https://doi.org/10.1520/D0698-12R21.
ASTM. (2022). Standard Test Method for Determination of Thermal Conduictivity of Soil and Rock by Thermal Needle Probe Procedure. ASTM Standard ASTM D5334-22a, ASTM International, West Conshohocken, PA. https://doi.org/10.1520/D5334-22a.
Carter, M. D., and Gregorich, E. G. (2007). Soil Sampling and Methods of Analysis. In CRC Press eBooks. https://doi.org/10.1201/9781420005271.
IEEE SA (IEEE Standards Association). (2017). “IEEE Standards Association.” IEEE Standards Association. https://standards.ieee.org/ieee/442/6891/.
Kosior-Kazberuk, M., and Ezerskiy, V. (2011). “Mathematical modelling of thermal conductivity process in salt-contaminated wall materials.” Int J Heat Mass Transf, 54:86–91. https://doi.org/10.1016/j.ijheatmasstransfer.2010.10.004.
Nikoosokhan, S., Nowamooz, H., and Chazallon, C. (2016). “Effect of dry density, soil texture and time-spatial variable water content on the soil thermal conductivity.” Geomech Geoeng 11:149–158. https://doi.org/10.1080/17486025.2015.1048313.
Personna, Y. R., Geng, X., Saleh, F., Shu, Z., Jackson, N. L., Weinstein, M. I., and Boufadel, M. C. (2015). “Monitoring changes in salinity and metal concentrations in New Jersey (USA) coastal ecosystems Post-Hurricane sandy.” Environmental Earth Sciences, 73(3), 1169–1177. https://doi.org/10.1007/s12665-014-3539-4.
Yan, X., Duan, Z., and Sun, Q. (2021). “Influences of water and salt contents on the thermal conductivity of loess.” Environ Earth Sci, 80:52 (2021). https://doi.org/10.1007/s12665-020-09335-2.
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Published online: Feb 22, 2024
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