Introductory technical guidance for civil engineers and construction managers interested in street and highway pavement preservation using thin asphalt overlays. Here is what is discussed:1. INTRODUCTION2. BENEFITS AND LIMITATIONS3. WHEN TO APPLY4. DENSE-GRADED ASPHALT MIXTURE DESIGN FOR THIN ASPHALT OVERLAYS5. PRESERVATION PROJECT DEVELOPMENT AND PAVEMENT STRUCTURE DESIGN6. CONSTRUCTION PRACTICES AND QUALITY CONTROL7. PERFORMANCE8. SUMMARY.

Introductory technical guidance for civil engineers and construction managers interested in street and highway pavement preservation using thin asphalt overlays. Here is what is discussed: 1. INTRODUCTION 2. BENEFITS AND LIMITATIONS 3. WHEN TO APPLY 4. DENSE-GRADED ASPHALT MIXTURE DESIGN FOR THIN ASPHALT OVERLAYS 5. PRESERVATION PROJECT DEVELOPMENT AND PAVEMENT STRUCTURE DESIGN 6. CONSTRUCTION PRACTICES AND QUALITY CONTROL 7. PERFORMANCE 8. SUMMARY.

Introductory technical guidance for civil engineers, highway engineers and construction managers interested in pavement construction and maintenance. Here is what is discussed: 1. INTRODUCTION, 2. BENEFITS AND LIMITATIONS, 3. WHEN TO APPLY, 4. DENSE-GRADED ASPHALT MIXTURE DESIGN FOR THIN ASPHALT OVERLAYS, 5. PRESERVATION PROJECT DEVELOPMENT AND PAVEMENT STRUCTURE DESIGN, 6. CONSTRUCTION PRACTICES AND QUALITY CONTROL, 7. PERFORMANCE, 8. SUMMARY.

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.