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Top Golf – March 7th

Dig, Pave, and Drive to the Top (Golf)   Three Great Organizations; Four Hours of Industry Networking; One Stellar Opportunity!   Click here for more information & to...

Asphalt Plants – Know the facts

Thousands of communities across the country coexist peacefully with asphalt pavement mix plants. These facilities are in urban, suburban, and rural areas, and most of them are known as good neighbors who are engaged with their community and dedicated to sustainable operations. However, there is a lot of misleading and often daunting information about asphalt plants and products. Therefore, it’s important to understand what is fact and what is fiction. The asphalt pavement industry has a long record of working with the environmental regulatory agencies including the U.S. Environmental Protection Agency (EPA) and the Minnesota Pollution Control Agency (MPCA) to accurately determine the amount of emissions from an average asphalt plant. The studies show that asphalt plant emissions are typically very low and controlled. Some of the emissions from asphalt pavement plants (as well as other combustion sources) are regulated as air pollutants. The relevant question when considering the potential air quality and human health impacts of emissions from an asphalt plant (or any other source of air emissions) is whether the emissions are great enough to affect local air quality and health, or whether these emissions are instead low enough to be harmless. The U.S. Environmental Protection Agency (EPA) has collected extensive test data from asphalt pavement plants.1 On the basis of this testing, the EPA has determined that even very large facilities – which produce 1,000,000 tons per year of asphalt pavement – are not major sources of air pollution,2 and easily satisfy federal and state regulatory requirements designed to protect public health. In 2002, the EPA officially delisted asphalt plants as a major source of air pollution. Therefore, it has been determined that asphalt plant emissions are very low and getting lower due to innovative control systems and manufacturing technology. A typical facility produces about 200,000 tons per year of asphalt pavement and plants are equipped with air pollution controls that curb dust and vapor emissions. As comparative context, the amount of volatile organic compounds (VOCs) released from the stack of an asphalt pavement plant in a year equate to the same yearly emissions from 20 residential fireplaces or 5 gasoline filling stations. Asphalt plants are an essential component of our...

MultiCool App Available Now!

MultiCool is an asphalt pavement cooling prediction program for use during construction. Funding for this app was provided by the National Asphalt Pavement Association. MultiCool is meant to estimate how rapidly a freshly-placed mat will cool as a function of the initial mat temperature, ambient conditions, mat thickness and other properties. The cooling rate prediction can help contractors better plan their rolling operations to more efficiently achieve target mat density. MultiCool has been validated in cold (Minnesota) and warm (California and Alabama) climates for typical Superpave mixtures, stone matrix asphalt (SMA) mixes, warm mix asphalt (WMA), reclaimed asphalt pavement (RAP), reclaimed asphalt shingle (RAS) and ground tire rubber (GTR) mixtures. It is available in the following formats: Android app: Search for MultiCool in the Google Play store or use this link https://play.google.com/store/apps/details?id=com.AUcivil.MC2   In a web browser on a mobile device (use this option for iPhone): http://www.eng.auburn.edu/users/timmdav/MultiCool/FinalRelease/Mobile.html   In a web browser on your desktop:...

Asphalt Pavements and LEED Credits

Global economic competition, metropolitan congestion, and global climate change are among the new dynamics that require new thinking in the nation’s transportation and development systems of the future. Did you know that the production and placement of asphalt pavements consumes less fuel and produces lower levels of greenhouse gases? Download the Asphalt Pavements and LEED Credits PDF...

Free Software

Software for designing Perpetual Pavements, PerRoad 3.5 and PerRoadXpress 1.0; and Life Cycle Cost Analysis (LCCA), LCCA Original and LCCAExpress, are available for free at www.asphaltroads.org

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