Using of Circular Road Simulator to Evaluate Performance of Asphalt Mixtures made of Industrial By-Products
عنوان مقاله: Using of Circular Road Simulator to Evaluate Performance of Asphalt Mixtures made of Industrial By-Products
شناسه ملی مقاله: JR_JGTTE-4-1_003
منتشر شده در در سال 1397
شناسه ملی مقاله: JR_JGTTE-4-1_003
منتشر شده در در سال 1397
مشخصات نویسندگان مقاله:
Dina K.Kutah - Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden
خلاصه مقاله:
Dina K.Kutah - Swedish National Road and Transport Research Institute (VTI), Linköping, Sweden
It is well known that the use of by-products (recycled), instead of
natural materials help toward more environmentally friendly roads
by easing landfill pressures and reducing demand of extraction.
Correspondingly, this paper deals with evaluating the mechanical
performance of new developed hot mix asphalt (HMA) mixtures
made of alternative materials (up to ۹۸% industrial waste
materials). The paper sheds light on the long-term performance of
the new developed mixtures using the accelerated load testing
facilities available at VTI (the Swedish National Road and
Transport Research Institute). The materials, methods and results
given in this article are part of ALTERPAVE European -project
findings. In this project, different types of industrial by-products,
namely, reclaimed asphalt pavement (RAP), foundry sand and
steel slag) have been used in different fractions to find the
composition of the best asphalt mixtures made mainly of
industrial wastes that can substitute the asphalt mixtures made of
natural aggregates. Using the circular road simulator (CRS),
twenty- eight asphalt slabs were prepared using natural and
industrial by-products and tested under different testing
conditions. The CRS test has been used to assess the surface
deterioration, wear and the changes in macrotextures of the tested
asphalt slabs under wheel loading in dry or wet conditions and
under different testing temperatures to simulate summer and
winter seasons. In addition, studless and studded tires have been
used to traffic the asphalt slabs during the CRS testing to simulate
the current roads conditions in different European countries. The
test results demonstrated that by controlling the homogeneity of
recycled material and by using rejuvenators of suitable quality and
quantity, it is possible to obtain paving mixtures with high content
of recycled materials that can satisfactory substitute the
conventional asphalt mixtures made of natural materials.
کلمات کلیدی: Accelerated load testing; Foundry sand; Hot mix asphalt; Reclaimed asphalt pavement; Steel slag
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1840956/