Akademik Veri Yönetim Sistemi
Geomechanics and Engineering, cilt.43, sa.2, ss.75-87, 2025 (SCI-Expanded, Scopus)
Natural geotextiles have been increasing instead of synthetic geotextiles used in various geotechnical engineering applications because they are more environmentally friendly. In this study, a new type of geotextile called “Geo-Hemptex” is produced from hemp fibers for the first time that may be an alternative to synthetic and natural geotextiles. Unconsolidated-Undrained (UU) and interface shear box tests were conducted to determine the interaction between Geo-Hemptex and granular soil. Geo-Hemptex was placed in one and two layers during UU tests, and three different confining pressures were applied during tests. Interface shear box tests were conducted under three different normal stresses to determine the interface characteristics between Geo-Hemptex and granular soil. All tests were also carried out using synthetic woven and non-woven geotextiles to compare with Geo-Hemptex. UU tests were modelled using the finite element method. All geotextiles provided approximately similar results in interface shear strength. However, higher adhesion was determined for Geo-Hemptex compared to synthetic woven geotextile. Geotextile placement, axial stiffness of geotextile, and interface strength influenced the UU test results. The synthetic woven geotextile yielded higher strength in the case of single-layer orientation. In contrast, Geo-Hemptex and woven synthetic geotextiles resulted in similar strength increases in the case of double layer orientation. The results of this study demonstrate that Geo-Hemptex can be used as an alternative to synthetic geotextiles, reducing greenhouse gas emissions and synthetic residues in the soil, thus providing more environmentally friendly solutions to geotechnical engineering problems.