Prov med Laettare Daeckdubb i VTI:s Provvaegsmaskin (Tests with Lightweight Tyre Studs in the VtI's Pavement Testing Machine).

摘要

The use of studded tires, while having a direct effect on traffic safety, gives rise to a number of problems and increased costs, especially on roads with high traffic volumes. The wear from studs contributes to rutting and shorter pavement life. In the latest investigation of studded tires, carried out in 1989, the cost of pavement wear from studded tires was estimated at SEK 250-300 million per year for the Swedish road network. In recent years, new types of lightweight studs have appeared on the market, which may reduce pavement wear and consequent expense. At the VTI, a special machine for accelerated testing of pavement wear is being used to perform investigations under controlled conditions. Using the machine, a study has now been completed on two types of lightweight studs, one with a plastic body and the other of light metal. The tests showed that speed is of great significance for pavement wear. Abrasion increased significantly at higher speed. Steel studs gave almost the double amount of wear at 85 km/h compared to 60 km/h. To obtain an idea of the wear-resistance of the studs, stud protrusion has also been measured. The decrease in protrusion was of the same order of size for plastic studs as for light metal and steel studs. Thus, the results do not indicate any significant difference in wear resistance between the various types of stud. The conclusion from the investigation is that the lightweight studs that have been tested reduce pavement wear by about half. The calculated cost of the wear could thereby be halved within a few years when these studs have replaced the conventional steel stud.