Optical microtopographic inspection of asphalt pavement surfaces

Abstract

Microtopographic and rugometric characterization of surfaces is routinely and effectively performed non-invasively by a number of different optical methods. Rough surfaces are also inspected using optical profilometers and microtopographer. The characterization of road asphalt pavement surfaces produced in different ways and compositions is fundamental for economical and safety reasons. Having complex structures, including topographically with different ranges of form error and roughness, the inspection of asphalt pavement surfaces is difficult to perform non-invasively. In this communication we will report on the optical non-contact rugometric characterization of the surface of different types of road pavements performed at the Microtopography

Photocatalytic asphalt mixtures: semiconductors’ impact in skid resistance and texture

“…However, there are a few types of equipment, such as the optical triangulation based-microtopographer, capable of doing it in asphalt mixtures (Costa, 2012). Previous work carried out with this equipment showed that the amplitude parameters Sa, Sq and Total Height of the Surface (St) are not directly affected by the type of bitumen (Costa, Freitas, Torres, & Cerezo, 2017).…”

“…To measure the microtexture, an optical microtopographer was used. With large measuring range, high versatility, robustness and reliability, good accuracy and resolution, the MICRO-TOP.06.MFC microtopographer (Figure 1) was used to inspect a wide range of surface types (Costa, 2012), including asphalt mixtures (Costa et al, 2017). The system is based on discreet active triangulation.…”