Asphalt Rubber Technology Information Center
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Asphalt Rubber Cement Concrete - Webster County
Discarded tires have become a major disposal problem in the US.  Different techniques of recycling these discarded tires have been tried.  The state of Iowa is currently
evaluating the use of discarded tires ground into crumb rubber and blending...
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Bonded Concrete Overlay in City of Oskaloosa
The City of Oskaloosa was faced with a dilemma.  What to do with a 50-year old concrete pavement that was in relatively good condition but functionally obsolete and
causing concerns for safety.  The ultimate solution, the use of a bonded concrete overlay together...
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Evaluation of Recycled Rubber in Asphalt Concrete – Black Hawk County -  Project HR-330B
Reports on the construction of an asphalt-rubber hot mix test section on IA 21, Blackhawk County.  Three test sections were constructed, two of the test sections used
asphalt-rubber in the binder and surface courses and the third test section was constructed using conventional...
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Evaluation of Recycled Rubber in Asphalt Concrete - Black Hawk County - Project HR-330D
The disposal of discarded tires has become a major problem.  Different methods of recycling have been researched.  Currently, Iowa is researching the use of ground
recycled crumb rubber from discarded tires in asphalt rubber cement.  Six projects have been completed in Iowa using asphalt rubber...
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Evaluation of Recycled Rubber in Asphalt Concrete – Dubuque County
The Iowa DOT is evaluating the use of discarded tires in asphalt rubber cement.  There have been five projects completed in Iowa.  This project is located on US 151
north of Cascade to US 61 in Dubuque.  One section consists of an asphalt rubber cement surface and a conventional binder...
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Evaluation of Recycled Rubber in Asphalt Concrete - Plymouth County
The Iowa DOT is evaluating the use of ground recycled crumb rubber from discarded tires in asphalt rubber cement.  There were four projects completed during 1991
and another one constructed in 1992.  This project is located on IA 140 north of Kingsley in Plymouth...
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Production of Asphalt Rubber Concrete by the Dry Process
A test section was placed in Shelby County using rubber modified hot mix with the dry process.  A double drum mixer was used that introduced the rubber with the bag
house fines return.  Conclusions are that temperatures lower than used for the wet process...
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White Topping in Washington County, Iowa
What do you do with 9.00 miles of 20-year-old asphalt pavement with a traffic count of 1000 to 2400 vehicles per day?  That was the case with... Read More
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