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Synthesis of Information Related to Highway Practices. Topic 55-04. Current Practices and Guidelines for Full-Depth Reclamation (FDR)

Project Details
STATE

VA

SOURCE

RIP

START DATE

10/15/23

END DATE

03/25/24

RESEARCHERS

Edward Harrigan

SPONSORS

NCHRP, American Association of State Highway and Transportation Officials, Federal Highway Administration

KEYWORDS

Full-depth reclamation, Guidelines, Literature reviews, Pavement maintenance, State of the practice

LINKS

Project Webpage

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Project description

Full-depth reclamation (FDR) is an in-place recycling method for reconstruction and rehabilitation of flexible pavements that uses existing failed-section materials as the base for a new surface wearing course. By making effective use of the structurally failed pavement, paving projects using FDR are sustainable and cost-effective. Pulverized roadway materials may be blended with stabilizing additives such as emulsion, foamed (expanded) asphalt, calcium chloride, or portland cement to form a stiff base layer. FDR is a widespread practice, but state departments of transportation (DOTs) have diverse construction practices and quality assurance procedures for the FDR base layer. The objective of this synthesis is to document current state DOT practices and guidelines for the use of FDR.
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