Factors Affecting Development of Roughness in Hot Mix Asphalt Pavements

The objective of this study was to determine the factors that contribute to roughness in Hot Mix Asphalt (HMA) pavements. The progression of actual roughness extracted from raw longitudinal profile data of the HMA pavements employed in LTPP is investigated. Power Spectral Density (PSD) of longitudinal 25mm profiles of the pavements are calculated and the progression of the severity of roughness features at different wavelengths are identified. The effect of several factors such as structural design, mix design and climatic variables on the progression of roughness features at different wavelengths were investigated. Once the development of roughness is understood, measures in construction, mix design or design details can be taken to reduce the adverse influence of these factors.

Language

• English

Project

• Status: Active
• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Start Date: 20050201
• Expected Completion Date: 0
• Actual Completion Date: 20060901
• Source Data: RiP Project 11618

Subject/Index Terms

• TRT Terms: Asphalt pavements; Flexible pavements; Hot mix asphalt; Mix design; Pavement design; Pavement performance; Research projects; Roughness; Structural design
• Subject Areas: Design; Geotechnology; Highways; Pavements; Research; Safety and Human Factors; I30: Materials;

Filing Info

• Accession Number: 01458464
• Record Type: Research project
• Source Agency: Federal Highway Administration
• Files: RIP, USDOT
• Created Date: Jan 3 2013 12:43PM