Provväg riksväg 26 Skultorp: uppföljning av provsträckor med aktiv design

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VTI has performed falling weight measurements and analysis of surface profile measurements on road 26 at Skultorp south of Skövde. Within the road project it was built three test sections (incl. reference section) with different subbase material and an additional section with thinner asphalt pavement for analysis of active design and 1 + 2 sections for monitoring the reference structure constructed of three different contractors. The measurements intended to assess the different construction types and performance by analyzing the differences and changes in stiffness and rutting under 9 years of traffic, for traffic from 2005 to 2014.

Generally the results of falling weight measurements show a road with very high bearing capacity. There is a big difference in the measurement results and stiffness between the survey before opening for traffic in 2005 and the second measurement 2014, where there was a significantly lower stiffness 2005 than in 2014. At the measurement 2014 it was full asphalt thickness and at the same time the road has consolidated and become compact over many years of service. Therefore, the measurement 2014 best represent the road condition over the years it has been in use.

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