HVS-test för skattning av nedbrytningseffekter från den tunga trafikens belastning: SE14, SE18 och SE20

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This publication describes the aim and outcome of the constructions made to estimate deterioration/degradation of roads from the load of heavy traffic. The purpose was to study three constructions with three different wheel-loads (40 kN, 50 kN and 60 kN which corresponds to axle-loads of 8 tons, 10 tons and 12 tons). To minimize the test matrix the idea was to copy older test constructions tested with the wheel-load 60 kilonewton (kN). The outcome was not to full content, especially did the thinner, older constructions differ in the bearing capacity (static plate loading). For the most modern construction (SE14), with totally of 625 millimetre of super structure including 111 millimetre of asphalt layers, that was compared with SE10 and SE11 the differences was acceptable. The wheel load was 40 kN in 600 000 passes and 50 kN for another 600 000 passes, in total 1.2 million passes. Total rut depth became approximately 6 millimetre. The ”medium” construction (SE18) had a super structure of 349 millimetre including 100 millimetre of asphalt layers and it was compared with SE06. The wheel load was 40 kN in 500 000 passes, 50 kN for 400 000 passes and 60 kN in 300 000 passes, in total 1.2 million passes. Total rut depth became just over 11 millimetre. The thinnest construction (SE20) had a super structure of 310 millimetre including 70 millimetre of asphalt layer and it was compared with SE02. The wheel load was 40 kN in 390 000 passes, 50 kN for 170 000 passes and 60 kN in 190 000 passes, in total 0.75 million passes. Total rut depth became almost 21 millimetre.

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