Engineering properties of soil stabilized with cement and fly ash for sustainable road construction

  • سال انتشار: 1400
  • محل انتشار: ماهنامه بین المللی مهندسی، دوره: 34، شماره: 12
  • کد COI اختصاصی: JR_IJE-34-12_014
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 243
دانلود فایل این مقاله

نویسندگان

D. Nguyen

Campus in Ho Chi Minh City, University of Transport and Communications, No ۴۵۰-۴۵۱ Le Van Viet St., Tang Nhon Phu A Ward, Thu Duc City, Ho Chi Minh City, Vietnam

V. Phan

Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam

چکیده

This study presents an experimental study of engineering properties of soil stabilized with cement and fly ash for layers in roadway construction. The fly ash was used in this study satisfies the requirement according to ASTM C۶۱۸. Five proportion mixes were used in this work with varying quantities of Ordinary Portland cement amounts of ۸ %, ۱۰%, and ۸% cement combined with fly ash content of ۲%, ۴%, and ۶%. Specified curing periods of ۷, ۱۴, ۲۸ days were applied for all types of specimens. Some engineering tests were carried out, such as unconfined compressive strength, splitting tensile strength, stiffness of stabilized soil, SEM, and XRD techniques. SEM images, magnified ۳۰۰۰ times, showed that compacted soil structure was found as small and odd particles arranged without gel bound, while cement-fly ash stabilized soil was covered foam formation due to cement-fly ash crystal, and small particles cannot be observed. The peak intensity of Silicon Oxide was seen in the region ۲۶-۲۸° with an angle of ۲. In addition, cement and fly ash significantly improved the mechanical properties of stabilized soils. Finally, the specimen containing ۸% cement and ۲% fly ash at ۱۴-day curing has a splitting tensile strength greater than ۰.۴۵ MPa, satisfying the base layer of road construction requirement according to current Vietnamese standards. The obtained results provided a shred of evidence for capable of using fly ash for road construction in the context of an increase the fly ash in thermal plants.

کلیدواژه ها

Fly ah, UCS, Splitting Tensile Strength, Stiffness of modulus, Base Layer

اطلاعات 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.