Quiet Pavement Systems in Europe

Table of Contents

EXECUTIVE SUMMARY

Introduction
Significant Findings
Implementation Recommendations

CHAPTER ONE

Introduction
Background
Scope
European Hosts

CHAPTER TWO

Common Issues
Topical Issues
Policy
Denmark
The Netherlands
France
Italy
United Kingdom

Design
Denmark
The Netherlands
France
Italy
United Kingdom

Noise Analysis
Denmark
The Netherlands
France
Italy
United Kingdom

Construction
Denmark
The Netherlands
France
Italy
United Kingdom

Maintenance
Denmark
The Netherlands
France
Italy
United Kingdom

Research
Denmark
The Netherlands
France
Italy
United Kingdom

CHAPTER THREE

Significant Findings
Policy
Design
Noise Analyses
Construction
Maintenance
Potential Implementation Issues

APPENDIX A—BELGIUM

APPENDIX B—HOST COUNTRIES AND CONTACTS

APPENDIX C—AMPLIFYING QUESTIONS

APPENDIX D—SCAN TEAM MEMBERS

LIST OF FIGURES AND TABLES

Figures

1. Examples of two-layer drainage asphalt.
2. Oster Sogade in Copenhagen with PA8 (8-mm porous asphalt surface).
3. Two-layer porous asphalt (TLPA).
4. Experimental two-layer porous mix on A28.
5. Tire-road noise.
6. Danish noise measurement trailer.
7. Twinlay mixture (twin layers of porous mixture).
8. TRL noise test trailer.
9. Construction of the rollable road.
10. Construction of the ModieSlab (two-layer porous concrete).
11. Recycling a porous pavement in Italy.
12. Permeability testing of recycled mix.
13. Winter maintenance on porous asphalt in Europe.
14. Comparison of surface temperatures in dense-versus-porous asphalt surfaces.
15. Comparison of radiation from dense-versus-porous asphalt surfaces.
16. Short sections of porous surface.
17. Photo from Professor Ulf Sandberg's presentation.
18. Test road for very silent sound module (Helmholtz resonator).
19. Two-layer porous asphalt section on A28.
20. The "euphonic road" in Italy .

Tables

1. Organizations and locations visited.
2. Noise reduction.
3. Trends in voids.
4. Comparison of 0/6-mm mix and 0/10-mm mix.
5. Gaps in knowledge.
6. Noise-reduction results (compared to a dense-graded reference mix).