摘要: |
Hot and cold in-place recycling techniques recycle 100 percent of a hot mix asphalt (HMA) pavement, in place, during the maintenance/rehabilitation process. Numerous studies have shown in-place recycling to be a sustainable, cost-effective procedure for rehabilitation of HMA pavements. However, many states do not use these viable, environmentally friendly procedures for pavement rehabilitation. The three most common agency reported drawbacks to in-place recycling usage are: 1) lack of data on performance benefits, 2) lack of familiarity with or lack of guidelines on construction procedures (training materials), and 3) limited information on input parameters for pavement thickness design. There is a need to provide pavement design professionals and highway agencies with the knowledge and tools necessary to use in-place pavement recycling and reclaiming as a feasible, sustainable, competitive alternative to traditional pavement maintenance and rehabilitation strategies. The intent of this proposed project is to develop a sustainability calculator that would document the sustainability benefits of in-place recycling compared to traditional maintenance and rehabilitation techniques and to develop interactive training materials that will serve as a Basic Recycling Primer for in-place recycling. The sustainability calculator will be made available for local agencies and the training materials developed through this project will be provided to the Transportation Curriculum Coordination Council (TCCC) where they will develop an interactive web based training course. When the web based training course is complete by the TCCC the course should be available for free and will be hosted on the National Highway Institute’s web site and the TCCC web page. The sustainability calculator will be provided to the Asphalt Recycling & Reclaiming Association (ARRA) for possible hosting on their web page. The target audience for these materials includes students, local government agencies, state DOTs, engineering consultant technicians/inspectors, engineering and construction man\ |