چکیده مقاله
Phenol is a widely used industrial organic compound that poses significant environmental risks when released into soil This study investigates the influence of phenol contamination on the geotechnical and microstructural behavior of low plasticity clay A series of laboratory tests were conducted, including Atterberg limits, standard Proctor compaction, unconfined compressive strength UCS , X ray diffraction XRD , scanning electron microscopy SEM and leaching test TCLP The results indicated that phenol contamination increases the liquid and plastic limits while slightly reducing the plasticity index, suggesting higher water retention and modified consistency Compaction test results showed a decrease in maximum dry unit weight and an increase in optimum moisture content UCS tests revealed a strength reduction of nearly 70% in phenol contaminated samples compared to natural soil, mainly due to decreased interparticle friction and altered soil structure SEM images confirmed the transformation of the soil fabric from aggregated face to face arrangements in natural clay to flocculated and oriented structures in contaminated samples XRD analysis identified kaolinite and montmorillonite as the primary clay minerals Leaching tests showed that 58 5% of phenol was released, while 41 5% remained bound to the soil, indicating strong soil contaminant interactions Overall, phenol significantly alters the engineering behavior of clay soils, highlighting the importance of careful assessment in contaminated site management and geotechnical design
کلیدواژهها
نویسندگان
Meysam Garshasbi
PhD Candidate in Hydraulic structure, University of Tehran, Iran
Ali Raeesi Estabragh
Professor, Faculty of Soil and Water Engineering, University of Tehran, Iran
شیوه ارجاع
Garshasbi, Meysam and Raeesi Estabragh, Ali,1404,Experimental Investigations of the Mechanical and Microscopic Behavior of Phenol-Contaminated Clay Soil,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران