Noise Abatement Political Background
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1 Noise Abatement Political Background Advanced Noise Reduction Rob Hofman Dienst Verkeer en Scheepvaart (DVS)
2 2 Netherlands km 2 land Capital Amsterdam
3 Population density 3 16 million inhabitants, ~ 450 inhabitants/km 2
4 Dutch Main Road network Traffic intensity km motorway, 71 km 2 asphalt
5 Dutch Noise Issue: an example A13 Rotterdam Overschie 5
6 6 As seen from the Road
7 7 As seen by the inhabitants
8 2020 daily practice in the Netherlands Road users are confronted with high noise barriers 8
9 Dutch Cost Calculation 1 m 2 noise barrier ~ m height ~ 5000 Pavement width 25 m 200 per 1m 2 pavement Extra cost 1 m 2 Two layer Porous Asphalt ~ 30 9
10 Network theorem < persons dis tan ce to road > * km m * NL ( l * d) dl dd Billions!!!!! 10
11 We can become Billionaires Let s start IPG Minister Peijs 11
12 Dutch Noise Issue network level Using Porus Asphalt + Noise Barriers: During next decade few hundred kilometres noise barriers need to be constructed This will cost the tax payer appr. 2 billion Euro TOP50 GELUIDSKNELPUNTEN 2003 wegvak met veel 65+-woningen Kilometers N 12 Top 50 Noise locations Ministerie van Verkeer en Waterstaat Directoraat-Generaal Rijkswaterstaat Dienst Weg- en Waterbouwkunde
13 Noise Innovation Program (IPG) Goal : IMPLEMENT CHEAPER INNOVATIVE NOISE MEASURES i.e. mainly source oriented measures like silent pavement types Budget 55 M for
14 IPG Goals (4G s) 1 Billion Goedkoper = Cheaper Geluidsarmer = More Silent Gericht op de bron = Source Oriented Gereed voor Gebruik = Ready for actual use 14
15 Noise Barrier innovations Modular noise barrier 15
16 Noise Barrier innovations Barrier Top 16
17 Noise Barrier Innovations Inner verge noise barrier 17
18 18 End Political Background
19 Noise Abatement State of the art Silent Pavements Advanced Noise Reduction Rob Hofman Dienst Verkeer en Scheepvaart (DVS)
20 Pavements used by Rijkswaterstaat Dense asphalt concrete (Single layer) Porous asphalt Two layer Porous asphalt Thin Layer Asphalt (DAC) (SLPA) (TLPA) (TLA) 20
21 Dutch Pavements used on motorways > 80% Porous asphalt, ~ km TLPA 21
22 Current Situation 22
23 Porous Asphalt Mix - Bitumen 70/ % (= on 100% aggregate) - Polymer modification None - filler < mm containing 25% hydrated lime - void content 20% On sieve desired max. min mm mm mm mm mm mm ,5 cm coarse grade layer (0/16) 23
24 Porous Asphalt + Noise reduction No rutting problems No aqua planing Less splash and spray High appreciation of road users - Higher maintenance costs Lower initial skid resistance Not for use under high stress Winter maintenance Broken windscreens 24
25 IPG-products Two layer porous asphalt Thin Layers 25 2 nd
26 Two Layer Porous Asphalt 2,5 cm fine graded Top layer (2/6 or 4/8) 4,5 cm coarse grade Bottom layer (11/16) Polymer modification used, mainly SBS 26
27 Two Layer porous Asphalt compared to SLPA + Noise reduction High appreciation of road users High appreciation of citizens - Lower durability Large spread in product quality Limited construction season Carriageway broad construction 27
28 Results TLPA Acoustic Durability TLPA 4/8 TLPA 2/6 28 Noise level [db(a)] time [years] 2 nd
29 TLPA Acceptance Opinion Road Authority: - It is not durable and therefore expensive - Construction causes traffic jams - Noise reduction is lost after a few years Opinion Road User - Positive Opinion Road Neighbour - Positive 29
30 IPG TLPA-advice 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 30 SLPA + Noise Barrier
31 Thin Layer Asphalt Thickness: 2 ~3 cm Void content : 5 ~20 % Max grain size: 4, 6 or 8 mm 31
32 Noise Reduction TLA noise reduction [db(a)] 7,0 6,0 5,0 4,0 3,0 2,0 1,0 0, product 100% cars 100% trucks 85/15% mix SLPA (85/15mix) TLPA (85/15mix) 32
33 TLA compared to SLPA Medium speed Road (80 km/h) None Deterioration of Noise Reduction Splash and Spray Noise reduction Safety Cost effectiveness 33
34 TLA compared to SLPA High Speed Road (120 km/h) uncertainty of durability. Deterioration of Noise Reduction Cost Effectiveness on high speed roads Splash and Spray Noise reduction Safety Cost effectiveness on medium speed roads 34
35 Cost = f ( construction costs + manintenance costs) Maintenance Total Dense Asphalt Concrete Single Layer Porous Asphalt Two Layer Porous Asphalt Noise Barriers 35
36 Silent Pavements characteristics AC SLPA TLA 4 TLPA Noise Reduction (db(a)) Lifetime (years) Life cycle costs ( /m 2 ) ~ Initial skid Resistance Splash and Spray Mix of 80% Light vehicles at 110 km/h and heavy vehicles at 85 km/h (reference =?? db(a)) 2. Most heavy driven lane 3. LCA over 30 years 4. Estimated from literature values 36
37 Five Essentials for good silent pavements 1. Contracts which demand superior quality 2. Quality management systems 3. LCA-approach for silent pavements 4. Methodology to determine the acoustic performance 5. Method to determine the acoustical performance with improved reproducibility 37
38 38 End Traditional Pavements
39 Noise Abatement Pavements in Test Phase Advanced Noise Reduction Rob Hofman Dienst Verkeer en Scheepvaart (DVS)
40 IPG-products Modieslab Rollpave 40 3 rd
41 Rollpave: Construction from the roll 41
42 Roll Pave: Joint bonding 42
43 Roll Pave: Bonding by induction 43
44 Results Modieslab and Rollpave Geluidsniveau [db(a)] Modieslab Rollpave TLPA 4/ rd
45 IPG products Poro Elastic Road Surface (PERS) 45 4 th
46 PERS-Kloosterzande 46
47 PERS-Kloosterzande 47
48 PERS-Kloosterzande Japanese PERS1 (TRI) BSW Regupol G roll 48
49 PERS-Kloosterzande CPX measurements CPX measurements (ISO ) at 70 km/h, regular tyre 49
50 Results PERS ISO10844 SLPA 0/16 TLPA 2/4 on 8/11 DAC 0/16 PERS1 80 Sound lvel [db(a) Speed [km/h] 50 Initial CPB-measurements 4 th
51 Skid resistance PERS-Kloosterzande 51
52 Semi practice pilot PERS Location: Service Area De Brink/Motorway A50 Apeldoorn Facilitator: RWS Dienst Oost Nederland Principal: RWS-SSW&Innovation Test Centre Contractor: Dura Vermeer 1) PERS on a dense asphalt app. 150 m 2) PERS on a porous asphalt app. 150 m Minimal performance on safety and durability In-situ test program Laboratory test program COMBINATION OF PERS AND ROLLPAVE!!!! 52
53 Semi practice pilot PERS Location: Service Area De Brink/Motorway A50 Apeldoorn 53
54 Pilot Testsite Motorway A 50 54
55 Pilot Testsite Motorway A 50 First Phase, building underlayers (section 1 PA + Section 2 DAC August 2008-September 2008; Construction 2 nd phase, November 2009; Demonstration to Principle (Minister of Public Works) Nov 2009); 55
56 Thank you!!!! 56
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