Erfarenheter av bullerreducerande beläggningar

Download
Torbjörn Jacobson

The report summarizes the experiences of low noise asphalt pavements in Sweden. It is primarily focused on the asphalt-related factors that affect noise. It also considers the importance of road design when porous asphalt is used, an inventory of where the low noise pavements have been used in recent years, inspection of sections laid in the Stockholm region, annual cost, different types of low noise pavements and more. The most common term for low noise asphalt is porous asphalt, PA. Porous asphalt has high void content and high proportion of coarse aggregate (85%). This gives it a continuous pore system, which can lead water away and absorb some of the sound from the tires. The aim from the beginning was to improve road safety and traffic flow on the road during rain. Over time, the focus has shifted to low noise ability and are used today primarily to limit noise disturbance. In order to improve the resistance of porous asphalt, laid in two layers, an R&D project was started in 2010, with participation of suppliers, contractors, Swedish National Road and Transport Research Institute (VTI) and the Swedish Transport Administration. Three major test sections on high traffic roads with a speed of 90, 100 and 110 km/h have been built. They were laid 2010, 2012 and 2014 in the southern, central and northern parts of Sweden. Noise reduction has been 7–8 dB(A) for the new pavements and then reduced by 0.5–1 dB(A) per year. The durability of this porous asphalt has been good with stone loss or other damage occurring only to a small extent.

MEET US


7
Dec

Shipping and the environment – research meets reality

Centre for Transport Studies (CTS) in co-operation with Ports of Stockholm invite you to the seminar Shipping and the environment – research meets reality.

LATEST NEWS


2017-10-26

Simulation of cut-in by manually driven vehicles in platooning scenarios

A study in a VTI-driving simulator has showed that a platoon will be able to handle a cut in from a manually driven car. The results of this study have recently been presented at two conferences in Japan.


2017-10-16

ERPUG Forum

The five-year anniversary of European Road Profile Users' Group (ERPUG) Forum will take place at Ramboll head quarter, Copenhagen, Denmark October 19-20, 2017.


2017-09-29

Self-driving buses in Sweden next year?

A self-driving, fossil-free bus. This idea might become reality through a forthcoming collaborative project involving the Swedish National Road and Transport Research Institute (VTI), Linköping University and several other participants. The project group aim...


2017-09-29

New climate-proof solutions for hard surfaces in cities

High-density road infrastructure that emphasise maximum durability and minimum maintenance create inflexible systems, which put increased stress on urban trees and lead to increased risk for flooding. Over the past five years, the ‘Climate-proof solutions for...


2017-09-29

VTI is preparing for automated vehicles

Automation of traffic systems will lead to major changes. The European Union’s (EU) CoEXist research project began in June 2017 with the aim of preparing cities and road operators for the introduction of self-driving vehicles. The Swedish National Road and...


2017-07-05

Vehicle Driver Monitoring: sleepiness and cognitive load

To prevent road crashes it is important to understand driver related contributing factors, which have been suggested to be the critical reason in 94 per cent of crashes. The overall aim of the project Vehicle Driver Monitoring has been to advance the...