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Discover the historical journey of pavement noise control from ancient civilizations to modern innovations in Arizona. Explore the impact of noise, its control methods, and how it influences our daily lives. Learn about the advancements in noise reduction technologies and Arizona's efforts in implementing quiet pavements. Delve into the technical and social evolution that has shaped the current strategies for managing pavement noise, and the lessons learned from the Quiet Pavement Pilot Program. Understand the importance of controlling noise at its source and how it contributes to improving quality of life. Join us on this journey towards a quieter, more sustainable future.
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Noise Issues Are Not New • 8000 BC Worlds First Major Town-Jericho • 5000 BC Wheel Invented • 4000 BC Mesopotamia • 800 BC Iron Tires Introduced • 44 BC First Noise Regulation • 1869 London Report • 1870s Use of Wood Blocks • 1888 Pneumatic Tire Invented
1897 Survey of 122 Cities with Paved Streets and Pop. > 10,000
AdditionalSurface Types Hot Mix Sheet Asphalt 6,000 Yrs 100 Yrs Engine Tire
What is Noise, How is it Controlled, and How Does it Affect Our Lives
How Is It Controlled • At the Source • Vehicle & Tire Emissions • Through Distance • 3 dBA Reduction for Each Doubling of Distance • 25ft=70dBA, 50ft=67dBA, 100 ft=64 • Through Obstructions • Berms, Walls, And Combination of both
Controlled Through Obstructions1 dBA for each 2 ft of Wall Above
Ways of Measuring Sound Wayside (Far Field) Close Proximity (Near Field) Noise Intensity (Near Field)
ADOT ISO CPX Trailer 1995 Spg 2000 Spg 2001 Spg 2002 Spg 2003 2004
ADOT Uses ARFC to Provide Quiet Pavements • ADOT is Spending $34M to Overlay PCCP in the Phoenix Metropolitan • The ARFC is Minus 9.5mm & 9-9.5% Binder • 12.5 mm Thick When Used on Flexible Pavement • 25 mm Thick When Used on PCCP • ADOT Uses Pavement Type (ARFC) as a Noise Mitigation Strategy (4 dBA)
OGFC Gradat ion
The Technical Journey? • Development of Improved OGFC for Use in Snow Country (1970s-80s) • Improved OGFC Used to Resist Reflective Cracking (1980s-90s) • Improved OGFC Used as PCCP Overlay (1980s-2000s) • Benefit For Smoothness (1990s) • Benefit for Noise (1990s-2000s)
The Social Journey Begins • 1990 Industry Study • 1995 ADOT initiates first formal research • 2002 ISO Noise Trailer Constructed • 2002 Collaborative Research with Caltran’s & NCAT • 2002 Network Level Evaluation of ARFC • 2002 PCCP Surface Texture Experiments • 2002 ADOT Elects to Use ARFC for Noise • 2003 ADOT’s Quiet Pavement Pilot Program
The Social Journey Continues Population Growth of Arizona
(2) Evaluation of PCCP Tining Methods Longitudinal Uniform Transverse Random Transverse
Lessons Learned To Date • Comparison of Various Surface Types • Comparison of Measurement Systems • Environmental Effects • We Have Only Just Begun the JOURNEY!
Laboratory Tests • Impedance Tube (Mobile) • Complex Modulus Test-Loss Function • Permeability/Infiltration • Air Flow
In Summary • Surface Type Does Matter-Noise Should be Controlled at the Source • Noise Should be Managed Just Like Friction, Roughness, Rutting, and Cracking • People Do Care How They Live-It’s a Quality of Life Issue!!!
Thank You 6,000 Yrs 100 Yrs Future Tire/Pavement Engine Tire