The goal of this project was to develop a comprehensive analysis process for evaluating super-heavy load movement on flexible pavements
. As part of this project, the research team developed a comprehensive mechanistic-based analysis approach consisting of several analysis procedures for flexible pavement
structures, which is documented in a 10-volume series of FHWA reports.
"Massachusetts Institute of Technology research suggests that fuel economy gains can be achieved by converting flexible pavement
to more rigid pavements," says PCA Chief Economist Edward Sullivan.
The flexible pavement
is defined as a pavement with a bituminous surfacing and with a base layer with or without a hydrocarbon binder in PIARC Road Dictionary of World Road Association, 2011.
is a composite material that consists of a mixture of aggregate, sand, bitumen, and filler material which provides a road surface with sufficient skid resistance and function to disseminate vehicle load to the subgrade and at the same time has a long life expectancy without the need for frequent maintenance.
Hence, the installation of geogrid is found especially effective in low volume roads with thinly surfaced flexible pavement
. Being used in flexible pavement
, geogrid provides tensile reinforcement for base aggregates and leads to friction between geogrid and the aggregate layer.
A Sudanese research team studies the effect of hydrated lime on expansive soil subgrade for flexible pavement
while another from South Africa assesses whether their road construction industry is equipped to implement climate change mitigation practices.
The objective of this paper is to investigate the feasibility of using Adaptive-Network-based Fuzzy Inference System (ANFIS) for the inverse analysis of the multi-layered flexible pavement
structures based on FWD data.
Recycling of existing materials -- Making good soil-cement out of old flexible pavement
is nothing new; it has been done for years.
Effect of M-E Design Guide Inputs on Flexible Pavement
Performance Predictions, Road Materials and Pavement Design 8(3): 375-397.
Statistical Analysis of Performance of Recycled Hot-Mix Asphalt Overlays in Flexible Pavement
Rehabilitation (TechBrief) Publication Number: FHWA-HRT-11-051