Abstract
There has been growing interest and activity in the area of recycling materials for pavements, bases, and other highway components. This has been brought about by an awareness of the need to conserve energy, natural resources, and funds and to reduce disposal problems. This report the Transportation Research Board reviews concepts and field experience for application of recycling materials in highways. Primary emphasis is on pavements, but experience with recycling other items, such as guardrail components and sign blanks, is also reviewed. Research and development needs for advancement of recycling are identified. /Author/.