United States Department of Transportation
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New Software Tool Paves the Way for More Cost-Effective, Durable Roads in Kansas: Kansas Relies on LTPPBind Software to Select Superpave Binder PGs [Application Notes]
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1999-11-01
[PDF-97.74 KB]
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Abstract:The Long Term Pavement Performance (LTPP) program recently used data from its Seasonal Monitoring Program to quantify the relationship between air and pavement temperatures. This evaluation resulted in the development of improved low and high pavement temperature models for selecting Superpave performance grade (PG) asphalt binders. These improved models were then incorporated into a software program called LTPPBind. Today, the Kansas Department of Transportation (KDOT) relies on LTPPBind to select its Superpave binder PGs. LTPPBind provides users with the ability to select PGs based on actual site temperature conditions and adjust the selection based on site traffic loading and speed conditions. Benefits include reduced thermal cracking and rutting, less frequent road repairs, fewer highway maintenance zones to snarl traffic, and reduced costs.
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