E3S Web Conf.
Volume 205, 20202nd International Conference on Energy Geotechnics (ICEGT 2020)
|Number of page(s)
|Thermo-Hydro-Mechanical Properties of Geomaterials
|18 November 2020
Shear strength behaviour of sand-bentonite mixtures with pumice additivite under high temperature
1 Dokuz Eylul University, The Graduate School of Natural and Applied Sciences, 35390 İzmir, Turkey
2 Dokuz Eylul University, Department of Civil Engineering, 35390 İzmir, Turkey
* Corresponding author: firstname.lastname@example.org
Depending on increase in the number and type of energy geostructures, studies on the change in soil behavior against heat increase becomes more important. The engineering properties such as permeability, volume deformation of surrounding soils around energy structures mustn’t alter in the presence of heat and thermal cycles. Pumice is a material used in many fields especially for thermal insulation. For that reason, pumice can be used for increasing the resistance of soils in the presence of heat. In this study, the shear strength behavior of sand-bentonite mixtures was investigated with pumice additive under high temperature. In the experiments, 10% and 20% pumice were added to 10% and 20% sand-bentonite mixtures and compaction, direct shear tests were conducted. The direct shear tests were performed both room temperature and under 80°C. The results have shown that the pumice additive increased the shear strength of sand-bentonite mixtures under high temperature when compared the test results under room temperature.
© The Authors, published by EDP Sciences, 2020
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