Durability Evaluation of a Geothermal Grout

Abstract : The durability of a geothermal grout used to seal vertical geothermal probe is evaluated. The study integrates an experimental approach and geochem-ical models simulations. The accelerated ageing of the geothermal grout is evaluated in laboratory subjecting the grout to realistic geochemical and thermal ag-gressions to which the grout can be subjected. The parameters related to the thermal conductivity and the permeability are particularly monitored. An experimental setting is developed to reproduce the operating conditions of a geothermic probe under realistic containment conditions. The experimental results are the input of the geochemical degradation models leading to the simulation of long time scale degradation around the probe. Conclusions relating to the service life rise from this study.
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Submitted on : Wednesday, November 6, 2019 - 3:06:27 PM
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Pascal Monnot, Christophe Poinclou, Philippe Blanc, Amandine Rojo, Laurent Molez, et al.. Durability Evaluation of a Geothermal Grout. CIGOS 2019, Innovation for Sustainable Infrastructure, 2019, Hanoi, Vietnam. ⟨10.1007/978-981-15-0802-8_126⟩. ⟨hal-02351712⟩

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