Performance of TenCate Mirafi PGM-G4 Composite Paving Fabric- Reinforced Asphalt Pavements in Alaska

Abstract and project information last updated: 9 August 2012. Project updates are dated below.

AUTC
Project
Number
12069
Principal
Investigator
Juanyu (Jenny) Liu
jliu6@alaska.edu
Funding
Agency

TenCate Geosynthetics

Project
Budget
130540
Start
Date
5 March 2012
Estimated
End Date
4 March 2013

Abstract

Paving fabrics have been used in asphalt concrete (AC) overlays in a variety of design and
construction situations for more than three decades, and there is continued interest in effectively
applying newfound technology to all-too-common pavement problems. The purpose of this study
is to explore the application of a new multi axial grid — PGM-G4 composite interlayer invented
by TenCate Geosynthetics in reinforcing AC pavement structures. Compared with conventional
biaxial grids, this new type of paving interlayer grid introduces multi axial grid structure. It is
expected that this unique feature will deliver optimal AC/geogrid interaction and more efficient
reinforcement.

 
In this study, the expected performance and added value of PGM-G4 as an interlayer will
be verified. The engineering properties (such as fatigue and low temperature performance) of
PGM-G4 interlayer-reinforced asphalt pavement structure will be investigated in the lab, and its
impact on the overall asphalt pavement performance will be evaluated in the field as well. The
results will provide performance data of new PGM-G4 composite paving grid in AC overlay
reinforcement, which will be used to determine its suitability for Alaska paving conditions.