نوع مقاله : مقاله پژوهشی
نویسندگان
1 1- کارشناس ارشد عمران گرایش مهندسی و مدیریت ساخت، دانشکدهی عمران، دانشگاه صنعتی شریف (پردیس کیش)، کیش، ایران
2 هیات علمی دانشگاه ازاد اسلامی واحد شیراز
3 کارشناس ارشد، گروه مهندسی عمران، واحد شیراز، دانشگاه آزاد اسلامی ، شیراز، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
For many years, the construction of asphalt roads has been common in Iran, and today a significant volume of asphalt waste resulting from the aging and destruction of these roads is accumulating. These wastes are often transported to the outskirts of cities, and there is no specific mechanism in the industry for their recycling. Continuation of this trend, in addition to increasing construction costs, leads to the depletion of natural resources and quarries. In line with this goal, in the present study, various volumetric percentages of recycled asphalt aggregate (including 10, 20, 30, 40, and 50%) were used as a replacement for natural coarse aggregate in the production of RCCP. Other construction requirements were also applied according to National Standard No. 14830. Additionally, in order to enhance the compaction and quality of the concrete, microsilica equal to 10% by the cement weight was incorporated. The experiments conducted in this study included measurements of specific gravity, slump, abrasion resistance, and durability evaluation against chloride ion penetration using the RCMT method. The results indicated that as the replacement percentage of recycled asphalt increased, the abrasion resistance of RCCP decreased. However, RCCP containing 10% recycled asphalt still remained within the acceptable range of the code for light-duty and low-traffic pavements. Furthermore, the chloride ion penetration rate (by the RCMT method) in samples containing 10% and 20% recycled asphalt aggregate was within the permissible limits for XCD2,3 environmental conditions.
کلیدواژهها [English]
)