Scholarlink

<p>Plastic and tire waste are increasingly being seen as an environmental problem that requires innovative sustainable solutions. Increased consumption of plastics and automobiles leads to increases in waste streams of polyethylene terephthalate (PET) and tire derived crumb rubber (CR). The focus of this study is to evaluate the possibility of using high percentages of PET and CR as modifiers for asphalt binders to improve pavement material properties and assist with environmental sustainability. Asphalt binder was mixed with PET and CR (various combinations were used: from 6% PET + 5% CR to 10% PET + 15% CR by weight). A series of rheological and physical tests were conducted, including penetration, softening point, ductility, Fourier transform infrared spectroscopy, performance grading, frequency sweep, multiple stress creep recovery, and bitumen bond strength. Fatigue, moisture susceptibility, permanent deformation and stiffness performance of modified asphalt mixtures were evaluated by four-point beam fatigue, rolling bottle, wheel tracker and dynamic modulus tests. Results indicated that 10% PET + 15% CR modified binders and mixtures had significantly improved rutting resistance (59%) and moisture damage resistance (33%) with negligible change on fatigue cracking. The results of this study show the feasibility and sustainability of blending PET and CR with asphalt binders and mixtures, a feasible method for recycling waste and improving asphalt binder performance of road infrastructure.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Eco-efficient modification of asphalt binders and mixtures using elevated ratios of polyethylene terephthalate and crumb rubber waste: a step towards sustainable roads

  • 期刊论文

  • 发表日期：

    2025年3月31日

查看全文
  • Hafiz Ammar Zahid,
  • Syed Bilal Ahmed Zaidi,
  • Naveed Ahmad

摘要

Plastic and tire waste are increasingly being seen as an environmental problem that requires innovative sustainable solutions. Increased consumption of plastics and automobiles leads to increases in waste streams of polyethylene terephthalate (PET) and tire derived crumb rubber (CR). The focus of this study is to evaluate the possibility of using high percentages of PET and CR as modifiers for asphalt binders to improve pavement material properties and assist with environmental sustainability. Asphalt binder was mixed with PET and CR (various combinations were used: from 6% PET + 5% CR to 10% PET + 15% CR by weight). A series of rheological and physical tests were conducted, including penetration, softening point, ductility, Fourier transform infrared spectroscopy, performance grading, frequency sweep, multiple stress creep recovery, and bitumen bond strength. Fatigue, moisture susceptibility, permanent deformation and stiffness performance of modified asphalt mixtures were evaluated by four-point beam fatigue, rolling bottle, wheel tracker and dynamic modulus tests. Results indicated that 10% PET + 15% CR modified binders and mixtures had significantly improved rutting resistance (59%) and moisture damage resistance (33%) with negligible change on fatigue cracking. The results of this study show the feasibility and sustainability of blending PET and CR with asphalt binders and mixtures, a feasible method for recycling waste and improving asphalt binder performance of road infrastructure.