Abstract

On the occasion of rehabilitating the heavily travelled Swiss motorway A1 between Zürich and Bern with SMA, a long-term pavement performance study was initiated in 1998, combining permanent in situ measurements, periodic inspections and selected laboratory tests on pavement samples. An in situ measurement station was installed to record traffic loads, vertical deformations and temperatures within the cross section of the pavement. This paper presents the traffic loads and the deformation response under traffic as well as the development of pavement conditions between 1998 and 2001 according to evenness, skid resistance and FWD measurements. Temperatures within the pavement's cross section are compared to other motorway sections with different pavement structures.

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