Strength Tests of Hardened Cement Slurries for Energy Piles, with the Addition of Graphite and Graphene, in Terms of Increasing the Heat Transfer Efficiency

Tomasz Sliwa, Aneta Sapińska-Śliwa, Tomasz Wysogląd, Tomasz Kowalski and Izabela Konopka
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Tomasz Sliwa: Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland
Aneta Sapińska-Śliwa: Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland
Tomasz Wysogląd: Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland
Tomasz Kowalski: Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland
Izabela Konopka: Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland

Energies, 2021, vol. 14, issue 4, 1-20

Abstract: The development of civilization, and subsequent increase in the number of new buildings, poses engineering problems which are progressively more difficult to solve, especially in the field of geotechnics and geoengineering. When designing new facilities, particular attention should be paid to environmental aspects, and thus any new facility should be a passive building, fully self-sufficient in energy. The use of load-bearing energy piles could be a solution. This article presents research on the cement slurry formulas with the addition of graphite and graphene, that can be used as a material for load-bearing piles. The proposed solution is to introduce U-tubes into the pile to exchange heat with the rock mass (the so-called energy piles). A comparison of four slurry formulas is presented: the first one consisting mainly of cement (CEM I), graphite, and water, and the remaining three with different percentages of graphene relative to the weight of dry cement. The results could contribute to the industrial application of those formulas in the future.

Keywords: energy piles; graphite; graphene; geoenergetics; geothermics; grout; cement grout (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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