Framework and Tool for Selection of New Pavement and Treatment Surfaces for Flexible Pavements in New Brunswick, Canada (2021-2022)

Framework and Tool for Selection
of New Pavement and Treatment
Surfaces for Flexible Pavements
in New Brunswick, Canada
(2021-2022)

The Client:
Department of Transportation and Infrastructure, New Brunswick (NB), Canada

Our Work:

This project aims to build a decision framework and tools for pavement design and rehabilitation based on the practices of the Department of Transportation and Infrastructure, New Brunswick. There is a need to update the Department’s pavement design and rehabilitation practices due to the emergence of updated and more accurate design methods, new materials, treatment types, and improved construction methods. The main objective is the development of a solid framework supported by a tool for pavement type selection for new flexible pavements based on critical inputs affecting roadway performance in NB. The selection of pavement type and associated treatments addresses the major features of sustainability, state-of-the-art in the pavement engineering, cost effectiveness, and ease of implementation. The prevailing conditions, limitations, and state-of-practice in NB are considered. 

At TEST, we are performing the following tasks:

  • Conducting a literature review to comprehensively understand best practices, the design and treatments used in NB, and an understanding of similar regions. 
  • Collect data for existing conditions and perform baseline analysis in NB.
  • Incorporate advanced flexible pavement structural analysis methods, including 3D Finite Element Method.
  • Identify optimum pavement structure(s) for road service level. 
  • Develop a proposed matrix of possible pavement type, structures, and features for aggregate roads, surface treatments, and layered flexible pavement structures.
  • Develop a framework for a preferred pavement type and configuration 
  • Develop a user-friendly simple decision-based tool, with suggested default values.

The Outcome:
Technical memorandums summarizing existing literature and categorizing the collected data, whiteboarding sessions with The Department to review outcomes of each task, a final report summarizing project findings and recommendations for best practice, a decision based tool (software) with a user manual for pavement design selection, and a training webinar for the Department engineers to familiarize them with the tool.