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首页> 外文会议>Geo-Congress >EVALUATION OF FLY-ASH-TREATED RECLAIMED ASPHALT PAVEMENT FOR DESIGN OF SUSTAINABLE PAVEMENT BASES - AN INDIAN PERSPECTIVE
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EVALUATION OF FLY-ASH-TREATED RECLAIMED ASPHALT PAVEMENT FOR DESIGN OF SUSTAINABLE PAVEMENT BASES - AN INDIAN PERSPECTIVE

机译：粉煤灰处理过的沥青路面在可持续道路基础设计中的价值评估-印度的观点

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Rising costs and scarcity of natural materials such as aggregates are forcing highway agencies to look for alternate pavement designs for new construction, maintenance, and rehabilitation. Several states in USA are currently allowing the use of reclaimed asphalt pavement (RAP) combined with cement for a stabilized base course under both asphalt and concrete pavements. India has very limited experience with recycling and reuse of RAP in various layers of pavement structure. The main objective of the present research is to evaluate the use of reclaimed aggregates from older pavements with addition of stabilizers to improve the pavement performance with long lasting and reduction of asphalt course, which in turn reduce the carbon footprint. RAP samples were collected from an ongoing project site, and the specimens are prepared with RAP as principal component. Fly ash is used as the stabilizer and the mixes are evaluated in the laboratory for its strength and stiffness along with resilient modulus studies. The fly ash stabilized RAP base layer significantly improved the resilient behavior at 30% fly ash replacement by weight. Further increase in fly ash content reduced the performance.
机译：成本上升和天然材料（例如集料）的稀缺性迫使公路部门寻求用于新建筑，维护和修复的替代路面设计。美国一些州目前允许在沥青和混凝土路面下使用再生沥青路面（RAP）结合水泥作为稳定的基层。印度在路面结构各层中回收和再利用RAP的经验非常有限。本研究的主要目的是评估使用旧路面再生骨料并添加稳定剂，以改善路面性能，并延长沥青的使用寿命并减少沥青路线，从而减少碳足迹。从正在进行的项目现场收集RAP样品，并以RAP为主要成分制备标本。粉煤灰用作稳定剂，并在实验室评估混合物的强度和刚度，并进行弹性模量研究。粉煤灰稳定的RAP基础层在以重量计30％的粉煤灰替代量时显着改善了回弹性能。飞灰含量的进一步增加降低了性能。

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