Using fly ash and volcanic tuff along with lime for stabilizing high plasticity clay soil Yüksek plastisiteli kil zemin stabilizasyonunda uçucu kül ve volkanik tüfün kireç ile birlikte kullanılması
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.40, sa.2, ss.1249-1258, 2025 (SCI-Expanded, Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 40 Sayı: 2
- Basım Tarihi: 2025
- Doi Numarası: 10.17341/gazimmfd.1441636
- Dergi Adı: Journal of the Faculty of Engineering and Architecture of Gazi University
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.1249-1258
- Anahtar Kelimeler: Clay soil stabilization, fly ash, lime, volcanic tuff
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
This study explores the potential of using fly ash from the Afşin-Elbistan thermal power plant and Bitlis volcanic tuff for stabilizing high-plasticity clay soil. The study consists of three stages. In the first stage, fly ash at the rates of 5%, 10%, 15%, 20%, 25%, and 30% and volcanic tuff at the rates of 5%, 10%, 15%, 20% and 25% were mixed separately into the clay. In the second stage, samples were prepared with the same contribution rates of fly ash and volcanic tuff, but with the addition of 6% lime. Various tests, including consistency limits, standard compaction, and unconfined pressure, were conducted for all combinations, both with and without lime additives. The results indicated that usage of these additives increased its unconfined compressive strength. Furthermore, it was observed that the stabilizing effect was enhanced when fly ash and volcanic tuff were used together with lime. The ideal contribution rate for Afşin-Elbistan fly ash was obtained at 15% and for Bitlis volcanic tuff at 10%. In the third stage, the effect of curing on the unconfined compressive strength of the blended clay samples was investigated. Curing periods of 7, 14, 21, 90, and 120 days were applied to both lime and non-lime samples at the ideal additive ratios. The results demonstrated that the unconfined compressive strength increased with longer curing periods compared to samples that were not cured. Based on these findings, it is anticipated that the suggested additives can effectively improve high-plasticity clay soils.