Types of FDR Stabilizing Agents Checklist

Full Depth Reclamation (FDR) is a rehabilitation technique in which the full thickness of the asphalt pavement and a predetermined portion of the underlying materials (base, subbase and/or subgrade) are uniformly pulverized and blended to provide an upgraded, homogeneous material. Often, this blend of material alone, without any additional stabilizing agents, is sufficient to act as the base for a new surface course. However, if after proper project evaluation it is determined that the reclaimed materials need improvement or modification, there are three different methods of stabilization that can be used: mechanical, chemical, and bituminous. Below is a checklist of these three types of stabilization. Note that some specifications described in the following content may not be the same as the specifications followed by your agency. Always check with your State agency’s standards and specifications when using these guidelines.

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