Aktürk, KorayKaraca, Öznur2025-01-272025-01-2720212757-5195https://doi.org/10.28979/jarnas.906479https://search.trdizin.gov.tr/tr/yayin/detay/1121332https://hdl.handle.net/20.500.12428/15901Soils used as foundation or structural materials in construction are considered to be weaker than rocks and problems such as bearing capacity, erosion, sliding, collapse, and liquefaction can be encountered. In such cases, since most soil problems are site specific, the soil properties should also be improved by appropriate techniques. Improvement methods applied to strengthen soils often cause financial burden. Recently, there are studies about the use of waste rubber tires, which pose an environmental risk during storage, as a reinforcement material for soils. The main purpose of this study is to examine the effect of poorly graded sand (SP) mixed with granular waste tires in different proportions (10%, 20%, 30%, 40% and 50%) on the shear strength of the sand. For this purpose, the physical (water content, specific weight, unit volume weight) and mechanical (shear strength) parameters of the mixtures were determined. According to the results of the research, the material with 100% sand content contributes to the shear strength by a certain proportion when compared to the mixed materials containing granular-sized waste rubber. According to the results of this research, the highest shear resistance value was observed in material with 20% tire content in waste rubber sand mixtures, while higher rates of tire addition provided lower results than 100% sand material. In addition, considering the issue in terms of environmental impact, a column test was carried out on the mixture containing 20% rubber-80% sand and no adverse effects of the pollutants were observed.eninfo:eu-repo/semantics/openAccessYeşilSürdürülebilir Bilim ve Teknolojiİnşaat MühendisliğiJeolojiÇevre MühendisliğiArticle7225626510.28979/jarnas.9064791121332