Description
Abstract. The surface roughness in terms of the International Roughness Index (IRI) is critical in assessing pavement quality, affecting vehicle operation costs, driver safety, and comfort. The IRI model in PMED is linear between the initial IRI and other distress. The initial IRI is crucial for IRI model calibration and pavement design. This paper addresses the challenges and data limitations...
Abstract. On cycle paths, surface roughness is one of the dominant measures related to the level of service for cyclists. Then, in recent years, the demand for the maintenance and improvement of cycle path surfaces in-creases in terms of ride quality all over the world. However, the conven-tional approaches to the roughness evaluation are based on the viewpoints of four-wheel motor cars...
Abstract. Since approximately 50% of transportation in Japan depends on road vehicles, expressways play an important role in the development of road net-works. However, over hundreds of complaints in a year from road users have been recorded on an expressway call center in terms of the ride quality. Against this background, maintenance strategy of road surfaces en-abling safe and comfort...
Abstract. Chip-seal is probably the most widely used surface treatment in the world. Methods for assessing chip seal problems such as chipping loss are dated and rely on qualitative assessment. This paper considers a non-contact method to measure this failure. The method assesses 3d models created and analyzed using UUTex3d. The method of 3d model creation and assessment is summarized. The...
Abstract. Acoustical durability is an important factor influencing the ser-vice life of low noise semi-dense asphalt (SDA) pavements in Switzerland. The main factors affecting this property are the reduction in porosity from traffic loadi and especially clogging of pores during the service life. Over the past decade, an extensive database on the in-situ acoustical performance of SDA mixtures...
Abstract. Flushed road surfacing is a large problem in Australia and New Zealand whom both rely heavily on spray (or chip) seal as a cost-effective wearing course for flexible pavements. Conventional methods for correcting flushed spray seal surfacing can comprise texture reseals or hot chip placement but most typically involves high pressure water blasting of the surface. This essentially...
