For the past several years Kossuth County, Iowa has had a scheduled maintenance program of bituminous seal coating. This program has been used to maintain the 467 miles of asphaltic concrete surfaced roads in Kossuth County. Since most of the experience that Kossuth County had in seal coating was with cutback asphalt, it was decided to include the use of emulsified asphalt in Kossuth County's 1980 seal coat program. Items studied were design and construction procedures, cost of alternate material, energy consumption and environmental considerations. The contractor started the project on July 11, 1.980 and completed the project on August 1, 1980. Construction inspection and follow-up inspections of the project were conducted by personnel of the Kossuth County Engineer's Office and testing of the materials, friction testing and road rater testing were conducted by the Materials Department of the Iowa Department of Transportation. To date the project has performed as expected.
Recent years have presented a real financial challenge for highway departments. The energy shortage and rapid inflation have resulted in a severe redu...
This is a manual written for those who direct or physically construct asphalt seal coats. The text is based on field experiences. The manual contains:...
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