Mechanical Properties of Colemanite, Copper Slag and Glass Fiber Added Sand-Bentonite Mixtures as a Buffer Material for Energy Geo-structures

Batuge Y., YÜKSELEN AKSOY Y., Asci C., Alpaydin S. G.

Proceedings of the 3rd International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering (EGRWSE 2022), İzmir, Türkiye, 15 - 17 Eylül 2022, cilt.370 LNCE, ss.107-116 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 370 LNCE
  • Doi Numarası: 10.1007/978-981-99-4041-7_11
  • Basıldığı Şehir: İzmir
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.107-116
  • Anahtar Kelimeler: Colemanite, Copper slag, Direct shear test, Glass fiber, Sand-bentonite, Unconfined compression test
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Soil stabilization methods are important in dealing with geotechnical engineering, especially for energy geo-structures. In the present study mechanical properties of reinforced and unreinforced sand-bentonite mixtures were evaluated by a series of laboratory tests such as unconfined compression test and direct shear tests. The bentonite ratio of the various test specimens was 20% and the proportions of colemanite, copper slag and glass fiber used as additives in the specimens were chosen as 1% for glass fiber and as 10% for copper slag and colemanite. Compaction tests were conducted to determine the optimum water content and maximum dry density of the mixtures. As a result of direct shear tests copper slag and glass fiber slightly increased and colemanite decreased the shear strength of the sand-bentonite mixture. Also, copper slag and colemanite decreased the unconfined compressive strength of the sand-bentonite mixtures whereas glass fiber increased.