2275 - Development of Aggregate Characteristics-Based Preventive Maintenance Treatments Using 3D Laser Imaging and Aggregate Imaging Technology for Optimized Skid Resistance of Pavements

Skid resistance of pavements plays a significant role in road safety as the friction between tire and pavement surface is a critical contributing factor in reducing potential crashes. The skid resistance of a pavement surface has been related to two main properties of the pavement: microtexture and macrotexture. Microtexture is mainly dependent on aggregate shape, angularity and texture, while macrotexture is a function of asphalt mix properties, compaction method, and aggregate gradation. Many studies in recent years, such as NCHRP 4-30A and NCHRP 4-34 projects, have focused on evaluating and developing comprehensive test methods to measure aggregate shape, texture and angularity. However, none of these studies has clearly established any relationships between the aggregate properties and the ultimate pavement performance. The most recent developments in three-dimensional (3D) laser imaging technology will be used to collect 3D pavement surface texture data at highway speed at 1 mm accuracy. The project also uses several other state-of-the-art laboratory and field data collection instruments, including the Aggregate Imaging System (AIMS) and a portable 3D surface analyzer to collect ultrahigh resolution aggregate morphological characteristics data, including shape, angularity, and surface texture related index properties. Moreover, pavement skid resistance data will be collected using a skid trailer, grip tester, and dynamic friction tester. This study presents a detailed analysis of aggregate characteristics and its relationship to skid resistance of pavements. An understanding of the relation of the aggregate physical properties and implementing the recommended aggregate selection procedure will result in an immediate improvement in pavement performance, especially for pavement safety.

    Language

    • English

    Project

    • Status: Active
    • Funding: $45451
    • Contract Numbers:

      SPR 2275

      SPRY-0010(071)RS

    • Sponsor Organizations:

      Oklahoma Department of Transportation

      200 NE 21st Street
      Oklahoma City, OK  United States  73105
    • Project Managers:

      Seward, Kenny

    • Performing Organizations:

      Oklahoma State University, Stillwater

      School of Civil & Environmental Engineering
      207 Engineering South
      Stillwater, OK  United States  74078
    • Principal Investigators:

      Li, Joshua

    • Start Date: 20171001
    • Expected Completion Date: 20180930
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01578489
    • Record Type: Research project
    • Source Agency: Oklahoma Department of Transportation
    • Contract Numbers: SPR 2275, SPRY-0010(071)RS
    • Files: RiP, STATEDOT
    • Created Date: Oct 22 2015 2:18PM