Title: WEAR FROM STUDDED TYRES ON ASPHALT PAVEMENTS. SUMMARY OF RESULTS FROM TEST ROADS AND CONTROL SECTIONS 1990-98
Abstract: Wear from studded tyres, which has caused a large part of the rutting on heavily used roads, has led to the development of more durable wearing courses, such as various types of mastic asphalt. The VTI has taken part in a number of test road experiments aimed partly at studying the wear resistance of different asphalt pavements. This report summarises five test road experiments with wearing courses of mastic asphalt or porous asphalt concrete, and a further six control sections using mastic asphalt or dense-graded asphalt concrete. The pavements have been monitored since they were laid. Monitoring now comprises up to eight winters (1990-1998) of tyre wear measured with the Institute's profilometer. In addition to measurement of wear from studded tyres, continuous RST measurements are being performed. The quality of the mineral aggregate, maximum particles size and binder type are among the parameters included in the analysis of the test roads. Annual monitoring shows that pavement wear from vehicles with studded tyres has decreased considerably during the 90s through new, wear-resistant pavements, the use of high quality mineral aggregates and the introduction of less damaging studded tyres. Despite relatively high usage of studded tyres in recent winters, wear on the test roads has decreased, in some cases very noticeably. The SPS ratios (specific wear, grams of abraded material per vehicle with studded tyres and kilometre) is approaching extremely low levels, with SPS ratios of 2-4 for mastic asphalt with high quality mineral aggregate. As a result, rutting caused by vehicles with studded tyres is often on a low level. However, on those roads with the heaviest traffic volumes, wear from studded tyres continues to account for most of the rutting. The quality of the mineral aggregate is the individual parameter with the greatest importance for the pavement's capacity to stand up to wear from studded tyres. Another important parameter is the stone content, which, together with a third factor, the lightweight stud, accounts for the noticeable decrease in wear from studded tyres. Binder type, i.e. modified or conventional, does not appear to affect the wear resistance of mastic or porous asphalt. (A)
Publication Year: 1999
Publication Date: 1999-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot