Akademik Veri Yönetim Sistemi
Tezin Türü: Doktora
Tezin Yürütüldüğü Kurum: Karadeniz Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Türkiye
Tezin Onay Tarihi: 2022
Tezin Dili: Türkçe
Öğrenci: HÜSEYİN KALKAN
Danışman: Erol Şadoğlu
Özet:
Soil stabilization is defined as improving hydraulic, physical and mechanical properties of weak soils. Soil improvement methods can be categorized as mechanical, hydraulic, chemical and mixing material methods. Physical and mechanical properties of macro fiber-reinforced soilcrete with geotechnical laboratory, unconfined compression and indirect tension tests are investigated in this study. The aim of the study is to improve physical and mechanical properties of clayey soils with different binders and macro polypropylene fibers. Additionally, while examining the effect of macropolypropylene fibers on unconfined compressive and indirect tensile strengths, it was aimed to determine the optimum fiber ratio. In the study; 3, 5, 7 % cement and 5, 7, 9 % lime were used as binders and macro polypropylene fibers were added to the mixtures at the ratios of 0, 0.4, 0.7, 1.0 %. Experiments were carried out on the prepared samples after 7 and 28 days of curing. From the experimental studies, a 17-fold increase in unconfined compressive strength and a 19-fold increase in indirect tensile strength was observed. As a result, the increase in cement ratio causes an increase in strength in both low and high plasticity clay soils. On the other hand, when lime is added at low rates in low plasticity clayey soils, it provides an increase in strength, while in high plasticity clayey soils, it causes an increase in strength with its high addition. In addition, it was observed that the strength first increased with the increase of the fiber ratio, and then a decrease was observed in the strength with the increase of the fiber ratio. As a result of the study, the optimum ratio of macro polypropylene fiber was determined as 0.7 %.