Confined E^sup ^ testing on poroelastic road surface mixtures

In Europe, poroelastic road surface (PERS) material is being tested to a level at which it can be applied on different types of roads as a noise-reducing pavement. Traffic noise reductions of around 10-12 dB have been achieved using PERS in comparison to a conventional dense asphalt concrete. The PE...

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Bibliographic Details
Published in:Road materials and pavement design 2012-04, Vol.13 (2), p.385
Main Authors: Biligiri, Krishna Prapoorna, Kalman, Björn
Format: Article
Language:English
Subjects:
Aggregates
Behavior
Design
Laboratories
Noise
Roads & highways
Rubber
Online Access:Get full text
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Summary:In Europe, poroelastic road surface (PERS) material is being tested to a level at which it can be applied on different types of roads as a noise-reducing pavement. Traffic noise reductions of around 10-12 dB have been achieved using PERS in comparison to a conventional dense asphalt concrete. The PERS material is designed as an open-graded mix to have at least 20% air voids by volume. The objective of this research study was to evaluate the effect of six different confinement levels on the E* dynamic modulus testing of PERS mixtures. The major aim of utilising confinement on PERS materials was specifically to simulate and assess field performance characteristics of those mixes in the laboratory. Overall, confined tests on the PERS variants were able to distinguish material parameters reasonably well within the same mix, and between the different mixtures with varying mix designs. This study is anticipated to provide a basis for the selection of an appropriate confinement level for the PERS mixtures, to correlate field test results in future.
ISSN:1468-0629
2164-7402