Pavement Preservation Journal - Winter 2009 - (Page 37)

International Road Federation Hears from Lone Star State on Pavement Preservation By Dr. Yetkin Yildirim, P.E. s an advocate for better, safer and environmentally friendly roads, the International Road Federation (IRF) brought together public and private sector experts from around the world to examine current practices and discuss new strategies for pavement preservation in a recent seminar, Preserving our Highway Infrastructure Assets. The seminar addressed such key issues as the role of new materials and technologies for pavement preservation, new funding strategies and contracting models to sustain pavement preservation, and the latest tools for the management of pavement networks. The director of the Texas Pavement Preservation Center was invited to present to the IRF the recent efforts of the TPPC to raise pavement preservation awareness. He explained the various training programs in pavement preservation methods and practices offered by the TPPC to Texas DOT personnel, contractors, material producers, engineering students, and even elected officials. The Texas Center emphasized the need for making pavement preservation information available to both highway professionals and the general public. For this reason, online courses in pavement preservation are available for free on the TPPC web site, and the TPPC partners with local high school students to help guide them through science fair projects related to pavement preservation. For road professionals, the TPPC offers classroom courses in seal coats and micro surfacing. In the past four years, over 250 engineers and inspectors have earned Continuing Education Units through the completion of TPPC training courses. Several presentations at the IRF Seminar highlighted the need for pavement and asset management systems. Teresa Rommel, of the Metropolitan Transportation Commission, described the benefits of the functioning pavement management system utilized in the San Francisco Bay area. Butch Wlaschin, director of the Federal Highway Administration’s Office of Asset Management, further noted that the most successful asset management programs have moved away from a “worst first” investment strategy, and instead have adopted investment principles that are based on life cycle costing. Singh Puneet also articulated the challenges posed by a highway infrastructure and the need for accountable asset management. Environmentally responsible technologies also received significant attention at the IRF Seminar. Eric Jorda described a process used in France and throughout Europe for pavement preservation, dense cold mix asphalt emulsion. When compared to standard HMA mixes, dense cold mixes have been able to demonstrate global energy savings of over 30 percent. Iwama Masahiko of the Nippo Corporation suggested warm mix asphalt as an environmentally friendly alternative to hot mixes. Warm mix asphalt, enhanced by the additive agent ECOFINE, can be mixed at a greatly reduced temperature of 30 to 50 deg C (86 to 122 deg F). The result is a reduction of carbon dioxide emissions at the construction site by roughly 20 percent, as the asphalt no longer needs to be heated as significantly during application. Several presenters, including Douglas Carson, the executive director of the Rubber Pavements Association, and Cecelia Mancero, outlined the engineering benefits and opportunities made available by rubberized asphalt as an environmentally sustainable technique for the improvement of modern asphalt binder mixes. The Texas Pavement Preservation Center was also asked to participate as a member of the IRF Road Asset Management/Pavement Preservation Task Force. As a part of this international network, representing government, private industry and academia, the TPPC looks forward to sharing knowledge of the latest techniques and newest materials for pavement preservation and learning from a wide variety of pavement management and asset management systems. Dr. Yetkin Yildirim, P.E., is director, Texas Pavement Preservation Center, at the University of Texas-Austin. Reach him at or (512) 232-3084. Winter 2009 pavement preservation journal 37 CENTERS

Table of Contents for the Digital Edition of Pavement Preservation Journal - Winter 2009

Pavement Preservation Journal - Winter 2009
President’s Message
International Preservation Conference to Feature Flexible, Rigid Pavements
A Tribute to Jim Sorenson
Add Pavement Preservation to Boost Pavement Management
L.A. Street Preservation: It’s For, and About, the Public
StreetSaver Software Key to Bay Area Asset Management, Regional Fund Distribution
Integrating Pavement Preservation Practices
Revised Manual Provides Basics of Asphalt in Preservation
International Road Federation Hears from Lone Star State on Pavement Preservation
Iowa State Hosts Grad Course in System Asset Management
A New FP2 for Changing Times
Stimulus Package Boosts Preservation in Northeast
Calendar of Events
Index to Advertisers

Pavement Preservation Journal - Winter 2009