Page District Road Project Subject of the ISU study | news

(Clarinda) – A recent Page County road project is the subject of research at Iowa State University to develop future building codes.

During the Page County’s Board of Directors meeting on Tuesday, the board heard a presentation from engineering students who spent some time watching stabilization and sealing work on J55 near Braddyville and M44 near Northboro. In addition to the support work on the roads, the district has completed an Otta seal for the pavement. Developed in Norway and used in Europe, Africa and Australia, Otta Seal is a cheaper method of building a roadway using oil and aggregates – similar to a chip seal. Page County engineer JD King says ISU students are trying to establish consistent guidelines for application rates when working with Otta Seal.

“Page County’s work is the first opportunity to put an Otta seal on a cement-powder stabilized pad,” King said. “They put it on gravel roads, they put it on old sealing coats, in Winneshiek County they put it on a worn hot mix asphalt road. Road maintenance technology, except that the Otta seal is thicker. “

King says the tests were on parts of the J55 where the power unit and oil were routed at different speeds to compare their effectiveness. He says the Otta Seal test section has been relocated to a stretch of road near the proposed location.

“We have relocated the test track to the northeast. Should it fail in the future, we’ll be working further east on J55 in the years to come, ”said King. “Should it fail, we’d better fix it.”

Dr. Halil Ceylan is a professor at Iowa State University and the study’s lead researcher. He says the students have collected data on the dust from the new surface as well as the smoothness.

“This study of the Page County construction projects will be of great help in creating and issuing a specification so that other Iowa counties and other states in the country can actually benefit,” Ceylan said. “It significantly reduces dust emissions and offers a much safer road. These are great advantages. It was again a great pleasure to work with the county engineers for Help. “

As part of the project, the crews ground cement powder into the road to stabilize the subsoil and then applied two coats of the Otta Seal paving.

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