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Recycling Concrete and Asphalt Pavements Rehabilitation of Runway 18R-36L Orlando International Airport

by Rick V. Baldocchi,



Document Type: Proceeding Paper

Part of: Airport Pavement Innovations?Theory to Practice

Abstract:

The subject project consisted of reconstructing an air carrier runway utilizing a concrete keel section with asphalt overlays along the runway edges. Associated taxiways were rehabilitated with either asphalt overlays or new concrete sections. A number of new asphalt taxiways were also constructed as part of the project. The initial project site had a great deal of abandoned concrete and asphalt pavement constructed by the military when the airport served a U.S. Air Force SAC Base. The project pavement designs were performed with the intent of utilizing much of this existing material as well as the material removed as part of the rehabilitation process. Concrete pavements were removed and crushed on site into 3/4 inches maximum size aggregate. This material was used as aggregate for the econocrete base course beneath the asphalt shoulder pavement. Asphalt pavements were milled and the material used to stabilize the subgrade to reach the required LBR=40. Existing limerock base course was reclaimed and reused as base course or stabilization material. The recycling process, mix designs, mixing proportions and test results are included.

Subject Headings: Airport and airfield pavements | Asphalt pavements | Asphalt concrete | Pavement overlays | Concrete pavements | Pavement design | Materials processing | Orlando | Florida | United States

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