Noise Innovation Program (IPG) An Introduction

Transcription

1 Noise Innovation Program (IPG) An Introduction W.J. van Vliet, Rijkswaterstaat-DWW, Ministry of Transport Introduction IPG

2 Population density 16 million inhabitants, ~ 450 inhabitants/km 2

3 Dutch Roads

4 Dutch Main Road network Traffic intensity 3600 km motorway, 71 km 2 asphalt

5 Single Layer Porous Asphalt (SLPA) 5 cm PA 0/16 (Single Layer) Porous Asphalt introduced in 1988 Traffic speed 100km 120 km/u Noise reduction 4 db(a) in Traffic Noise Model Reduction splash and spray

6 Porous Asphalt 0/16

7 Dutch Noise Issue: an example A13 Rotterdam As seen from the Road

8 As seen by the inhabitants

9 Dutch Noise Issue network level Present status is wide application of SLPA and about 500km of noise barriers During next decade extra few hundred kilometres noise barriers need to be constructed Estimated costs 2 billion Euro TOP50 GELUIDSKNELPUNTEN 2003 wegvak met veel 65+-woningen Top 50 Noise locations Kilometers Ministerie van Verkeer en Waterstaat Directoraat-Generaal Rijkswaterstaat Dienst Weg- en Waterbouwkunde N

10 Dutch Approach Noise Innovation Program (IPG) Goal : IMPLEMENTATION OF CHEAPER INNOVATIVENOISE MEASURES Mainly source oriented measures like silent pavement types Budget 55 M for

11 IPG Goals 1 Billion Goedkoper = Cheaper Geluidsarmer = More Silent Gericht op de bron = Source Oriented Gereed voor Gebruik = Ready for actual use

12 IPG products examples Barrier Tops 1 2 db(a) Two Layer Porous Asphalt 6 db(a) Third Generation Noise Reducing Pavement 8 db(a)

13 IPG activities Basis: Focus on Implementation. Main research questions 1. Is the studied innovation a cost effective alternative compared to the current measure 2. Is the studied innovation acceptable for the road owner and civilians

14 Cost Effectiveness example TLPA TLPA ready for use on the Dutch Main Network if it is a cheaper alternative than the current noise reducing measures life cycle cost analysis for several alternatives TLPA SLPA + Noise Barrier

15 Acceptance example TLPA Opinion Road Authority: - Durability - Construction time/conditions - Safety problem with skidding resistance - Noise reduction is lost after a few years Opinion Road User - Positive - Reduction of Splash and Spray Opinion Road Neighbour -Positive -Noise reduction

16 Performance (indicative) AC SLPA TLPA Initial Noise Reduction [db(a)] Constructive Durability [years] Initial Skid Resistance + o o 1 Rutting Resistance Splash and spray - + +/++ 1. Additional measures might be necessary

17 Tender Requirements Performance Based Requirements for: Ravelling Longitudinal Evenness Transverse Evenness Skid Resistance Brake Deceleration Indirect Noise SLPA: voids content TLPA: water drainability

18 Mixtures SLPA No PMB used Ca(OH) 2 addition to increase lifetime 4,5% bitumen (ZOAB + 5,5 % increased lifetime) 20% void content TLPA (extra) Polymer Modified Bitumen used in Top and Bottom layer 6% bitumen bottom layer 25% void content

19 Construction Quality control should be high! TLPA is even more critical than SLPA Performance is strongly influenced by: 1. Construction process 2. Climate during construction 3. Materials Therefore; Construction only allowed between 1 May 1 October (T>10 o C) No construction during rain Not in sharp curves Construction lane wide

20 TLPA improvements Higher Structural Durability Ravelling Homogeneity Higher Acoustic Durability Clogging Higher Safety Initial Skid resistance Less Hindrance during Construction Warm-in-Warm

21 Test Sections TLPA 4 locations each 8 sections (total length 12,8 km) section improved skid resistance ( 3 km) section improved skid resistance (800 m) Planned: 2 durability test section, warm-in-warm test section TLA/BBM 4 test locations in 2006 ( length ~ 20 km) 9 products/testsections Plan for 1 location/product in rd Generation surfaces Rollpave (length ~3 * 500m) 4dB ModieSlab ( length ~ 100m) 6dB Test site Kloosterzande Poro elastic demonstration sections 9dB?

22 Ravelling Ravelling process on micro and meso level inside porous structure Important Parts of IPG study 1. Modelling 2. Ravelling Morphology 3. Ravelling Ageing

23 Ravelling Modelling 1. Material Model See Huurman 2. Process Model Influence of conditions of production, construction and service life on ravelling

24 Ravelling First step Test section with Improved Homogeneity

25 Ravelling Improved Homogeneity e.g. Shuttle Buggy to lower influence of interrupted supply of asphalt De-mixing of Asphalt

26 Acoustic Durability Test Section with improved cleaning: By Steam Cleaning Improved Vacuum Cleaning Ultrasonic Cleaning clogged clean

27 Initial Skidding Resistance Tested Mixture Improvements: DV Added glass slag (0/1) BAM Added mineral material (Europium fluoride) H1 Added fine sand H2 Added 2/6 aggregate (Belgian sandstone) & fine sand R1 H2 + added synthetic fibres R2 R1 + bitumen replaced with standard bitumen 70/100

28 Initial Skid Resistance Results Weeks after opening

29 Questions Or