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

Laboratory of Geoenergetics, AGH University of Science and Technology in Krakow, al. Adama Mickiewicza 30, 30-059 Krakow, Poland
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Academic Editor: Marco Fossa
Energies 2021, 14(4), 1190; https://doi.org/10.3390/en14041190
Received: 3 December 2020 / Revised: 14 February 2021 / Accepted: 16 February 2021 / Published: 23 February 2021
(This article belongs to the Special Issue Advancements in Thermal and Energy Geotechnics)
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. View Full-Text
Keywords: energy piles; graphite; graphene; geoenergetics; geothermics; grout; cement grout energy piles; graphite; graphene; geoenergetics; geothermics; grout; cement grout
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MDPI and ACS Style

Sliwa, T.; Sapińska-Śliwa, A.; Wysogląd, T.; Kowalski, T.; Konopka, I. Strength Tests of Hardened Cement Slurries for Energy Piles, with the Addition of Graphite and Graphene, in Terms of Increasing the Heat Transfer Efficiency. Energies 2021, 14, 1190. https://doi.org/10.3390/en14041190

AMA Style

Sliwa T, Sapińska-Śliwa A, Wysogląd T, Kowalski T, Konopka I. Strength Tests of Hardened Cement Slurries for Energy Piles, with the Addition of Graphite and Graphene, in Terms of Increasing the Heat Transfer Efficiency. Energies. 2021; 14(4):1190. https://doi.org/10.3390/en14041190

Chicago/Turabian Style

Sliwa, Tomasz; Sapińska-Śliwa, Aneta; Wysogląd, Tomasz; Kowalski, Tomasz; Konopka, Izabela. 2021. "Strength Tests of Hardened Cement Slurries for Energy Piles, with the Addition of Graphite and Graphene, in Terms of Increasing the Heat Transfer Efficiency" Energies 14, no. 4: 1190. https://doi.org/10.3390/en14041190

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