Suction Behavior of Sand-Bentonite Mixtures under High Temperatures with Carbon Fiber

Year 2026, Volume: 37 Issue: 1

Esra Güneri , Yeliz Yukselen Aksoy

https://doi.org/10.18400/tjce.1562920

Abstract

Soils that are not saturated with water have a greater tendency to absorb water, and the potential of soils to suction water varies depending on the different conditions. In addition, the suction behavior of soils is also affected by high temperatures. The soils around energy related underground structures are subjected to high temperatures. In order to determine the engineering behavior of these soils, the higher temperature effects should be investigated. In order to examine the impact of high temperature on the suction behavior of soils, this study aimed to determine the matric and total suction measurements of carbon fiber added sand-bentonite mixtures under high temperatures with the filter paper method. Equilibrium periods were as 1 and 3 days for sand-bentonite mixtures. The same tests were performed under 55 °C temperature. Thermal conductivity measurements were also made for all samples. The test results show that carbon fiber increased the thermal conductivity values of sand-bentonite mixtures and as temperature increased, while the matric and osmotic suction values decreased.

Keywords

Bentonite , carbon fiber , sand , suction , thermal conductivity , temperature

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