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Construction materials are increasingly judged by their ecological characteristics. Concrete recycling gains importance because it protects natural resources and eliminates the need for disposal by using the readily available concrete as an aggregate source for new concrete or other applications.

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Research Summary Recycled Concrete Aggregates in Portland Cement Concrete Pavement Problem Statement Recycling of old concrete pavement has become an important issue as more concrete

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At first blush, recycled concrete aggregate may seem a second-best solution because its use is being driven not by concrete performance requirements but rather by the requirement to create a more sustainable concrete.

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Recycling or reuse of existing asphalt pavement materials to produce new pavement materials has the following advantages: (1) reduced costs of construction, (2) conservation of aggregate and binder, (3) preservation of the existing pavement geometrics, (4) preservation of the environment, and (5) conservation of energy.

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Reclaimed asphalt pavement (RAP) and portland cement concrete (RPCC) are abundant and available substitutes for natural aggregate in many areas.

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What kind of FDOT projects lend themselves to the use of a recycled/reused material? The majority of transportation projects lend themselves to the use of recycled materials.

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Aggregates are inert granular materials such as sand, gravel, or crushed stone that, along with water and portland cement, are an essential ingredient in concrete.

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