Utilization of Recycled Carpet Waste in Clay Soil Mixtures: Mechanical Properties and Environmental Benefits
- سال انتشار: 1404
- محل انتشار: Contributions of Science and Technology for Engineering، دوره: 2، شماره: 2
- کد COI اختصاصی: JR_CSTE-2-2_004
- زبان مقاله: انگلیسی
- تعداد مشاهده: 126
نویسندگان
Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
Department of Civil Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran
Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
Department of Civil Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran
Department of Civil Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran
چکیده
In line with sustainable strategies for soil improvement, this study investigated the mechanical behavior of clay soil reinforced with various percentages of recycled carpet waste (RCW) through compaction, unconfined compressive strength (UCS), and direct shear tests (DST). The results indicated that with increasing RCW content, the maximum dry unit weight (MDUW) decreased, while the optimum moisture content (OMC) increased, primarily due to the lower specific gravity and greater water absorption capacity of the carpet fibers. The UCS and secant modulus at ۵۰% of peak stress (E۵۰) increased up to ۱% RCW, reaching ۲۱۶.۷ kPa and ۳۳۴۲ kPa, respectively. However, beyond this content, both strength and stiffness declined, likely due to weakened internal bonding and increased void ratio in the soil-fiber mixture. In terms of shear strength parameters, both cohesion and the internal friction angle improved up to ۱% RCW (۷۰.۲ kPa and ۱۸.۷°, respectively), followed by a decrease at higher dosages. These changes are attributed to the improved interlocking and bonding between soil particles and the distributed fibers at lower contents. Overall, incorporating RCW up to approximately ۱% offers a practical and environmentally responsible approach for enhancing the engineering properties of clay soils.کلیدواژه ها
RCW, Clay, Mechanical properties, environmental impact, Sustainable Construction Materialsاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.