Akademik Veri Yönetim Sistemi
73. Uluslararası katılımlı Türkiye Jeoloji Kurultayı, Ankara, Türkiye, 24 - 28 Mayıs 2021, cilt.1, sa.1, ss.536-541
In this study, structural analyzes of low plasticity clayey soil and waste PET fiber
mixture before and after freeze-thaw were investigated by uniaxial compressive test, X-Ray
Diffraction method (XRD) and scanning electron microscope (SEM). In order to determine
the effects of waste PET fibers on low plasticity clays, three different ratios of 0.1%, 0.2%,
0.3% and 10-25 mm long and 0.02 mm thick waste PET fibers were used. The strength properties of the waste PET fibers-clayey soil mixture randomly distributed in the clayey soil were
determined using a series of unconfined compression tests and for the freeze-thaw tests. XRD
test was used to obtain the crystal nature of clay soil and waste PET fibers and SEM images
was used to obtain detailed information about the surface morphology of the samples. It has
been found that the randomly dispersed waste PET fiber admixture into the clayey soil before
to freeze-thawing increases the peak compressive strength and ductility of the soil samples,
whereas the free compressive strength of the samples generally decreases after freeze-thawing,
but fiber incorporation partially inhibits the loss of strength. As a result, significant increases
in the strength of clayey soils reinforced with waste PET fibers were detected.