Akademik Veri Yönetim Sistemi
5th International Conference on Environmental Geotechnology, Recycled Waste Materials, and Sustainable Engineering, EGRWSE 2024, Warszawa, Polonya, 4 - 06 Temmuz 2024, cilt.580 LNCE, ss.89-96, (Tam Metin Bildiri)
Compacted sand-bentonite mixture is used as a buffer material in the nuclear waste repositories and solid waste landfills. The saturation state of the soil may change over the years. Therefore, it is important to observe suction behavior of soils under different conditions. One of the most important parameters affecting engineering properties of soils is the water-soil characteristics. The suction of sand-bentonite mixture depends on water content, bentonite content in the mixtures and time of hydration. In general, a decrease in the suction of bentonite was observed as the temperature increases, and an increase in the suction was observed as the dry density increased. In the present study, the suction behavior of the compacted sand-bentonite and sand-kaolin mixtures was determined by the filter paper method. As pore fluid tap water, NaCl and CaCl2 solutions were used. According to test results, while NaCl and CaCl2 solutions increased the suction value for kaolin and sand-kaolin mixtures, these solutions decreased the suction values for bentonite and sand-bentonite mixtures. The results shows the importance of pore fluid chemistry and mineralogy.