The Institute of Asphalt. Marking of Bituminous Mixtures & Aggregate

Transcription

1 The Institute of Asphalt CE Technology Marking of Bituminous Mixtures & Aggregate Dr Reza Shahmohammadi 22 nd Jan 2013

2 Aggregates BS EN BS EN Bituminous Mixes BS EN 13108

3 BS EN European Specification for Bituminous Mixtures

4 What have we got 8 Product Standards (EN 13108) 2 Production Standards (EN 13108) 44 Test Standards (EN 12697) PD UK Guidance document for use of EN PD UK Guidance document for use of EN BS Installation

5 EN Standards - Products EN Asphaltic Concrete EN Asphaltic Concrete for very thin Layers EN Soft Asphalt (Nordic Countries) EN Hot Rolled Asphalt EN Stone Mastic Asphalt EN Mastic Asphalt EN Porous Asphalt

6 EN Standards - Constituents EN Reclaimed Asphalt

7 EN Standards - Conformity EN Type Testing EN Factory Production Control

8 Product Testing Standards EN Standards covering the testing of asphalt mixtures Examples : BS EN Bulk Density BS EN Stiffness BS EN Marshall test

9 Important Differences ENs relate to the product.. in the back of the lorry Target & Tolerance concept Some description changes

10 Important Differences (cont.) Mixture are evaluated for product conformity against the selected properties within the EN Spec. Product conformity (attestation of conformity) is evidenced by CE marking

11 Important Differences (cont.) The specification tolerances for grading and binder content are NOT included in the individual product standard- They sit within EN (PD 6691) Binder and filler content are NOT adjusted to compensate for sampling bias

12 Type Testing (New Terminology) EN Applies two approaches: Empirical Approach Specifies Material Based on: Composition alone or Composition & Performance related tests (performance related testes which indirectly measure performance (i.e. Void content etc.)

13 Type Testing Cont. Fundamental Approach Specifies Material Based on: Performance Based tests, with limited requirements for composition (performance based testes which directly measure performance (i.e. Stiffness, deformation resistance & fatigue etc.)

14 Product Description Mandatory text Asphalt Type AC BBTM HRA SMA PA Size D etc Course Type Surf Bin Base Binder Grade 30/45 40/60 70/ / /220

15 Additional Text Grading Type Dense / Close / Open / HDM Recipe or Designed Mixtures Rec / Des Miscellaneous PSV / Reg

16 Change in Product Description BS 4987 Mixes 0/32 DBM 50 Base (Roadbase) 0/20 DBM 100 Binder Course 0/32 HDM 50 Base Course 0/10 Open Graded SC 200 0/14 Thin Surface Course BS EN &5 AC 32 Dense Base 40/60 rec AC 20 Dense bin 70/100 rec AC 32 HDM base 40/60 rec AC 10 open Surf 160/220 rec SMA 14 surf PMB 65/ (PSV 60) des BS 594 Mixes 30% 0/14 HRA SC 50 35% 0/14 HRA SC 50 35% 0/14 HRA SC Des 50 BS EN HRA 30/14 F surf 40/60 rec HRA 35/14 F surf 40/60 rec HRA 35/14 F surf 40/60 des

17 Product Identification Mixture designation: Asphaltic concrete Material Type Aggregate Size Grading Type Surf/bin/base Binder grade/type Recipe/ Design AC 20 dense bin 70/100 rec Asphaltic Concrete / 20mm agg size dense binder course / pen / recipe mix

18 Product Identification Mixture designation: Asphaltic concrete Material Type Aggregate Size Grading Type Surf/bin/base Binder grade/type Recipe/ Design AC 32 dense HDM Base 40/60 des Asphaltic Concrete / 32mm agg size dense Heavy Duty Macadam base course / pen / Design mix

19 Product Identification Mixture designation: Hot Rolled Asphalt Material Type Aggregate Size Grading Type Surf/bin/base Binder grade/type Recipe/ Design HRA 30/14 F Surf 40/60 rec Hot Rolled Asphalt / 30% Stone Content, 14mm max agg and a type F fine agg/ Surface course / 40/60 pen / recipe mix

20 Product Identification Mixture designation: Stone Mastic Asphalt Material Type Aggregate Size Surf/bin/base Binder Type Binder grade/softening point Recipe/ Design SMA 14 Surf PMB 65/ (PSV 60) des Stone Mastic Asphalt / 14mm max agg / Surface Course / Polymer Modified Bitumen 65/105 pen & Softening Point of 60 / containing a coarse agg of PSV 60 / Design Mix

21 Product Identification Mixture designation: Stone Mastic Asphalt Material Type Aggregate Size Surf/bin/base Binder Grade Recipe/ Design/ Regulation SMA 10 Bin 70/100 reg Stone Mastic Asphalt / 10mm max agg / Binder Course / using 70/100 pen bitumen laid as regulation

22 CE Marking Approval process Select target grading and binder content from the tables in the Annex in PD 6691 Carry out Type Testing according to EN to prove target mix conformity Apply Factory Production Control (FPC) tolerances to the target composition to formulate the compliances specification. Follow the FPC requirement to manufacture the product Certify the system (by approved certifying body) to be able to CE mark the product

23 Example for determination of target grading and it s limits Determine the average grading for the mixture over last 6 to 12 months and this should be within grading envelop given in PD 6691.

24 Example of a Declared Specification Test Sieve mm AC 32 HDM bin 40/60 Target Composition PD 6691 Annex B Binder 4.2

25 Example of a Declared Specification AC 32 HDM bin 40/60 Test Sieve mm Target Composition PD 6691 Annex B Declared Target Grading/ Binder Binder

26 Example of a Declared Specification AC 32 HDM bin 40/60 Test Sieve mm Target Composition PD 6691 Annex B Declared Target Grading/ Binder Tolerances from EN Table a ± ± ± ± ± 3 Binder ± 0.6

27 Example of a Declared Specification AC 32 HDM bin 40/60 Test Sieve mm Target Composition PD 6691 Annex B Declared Target Grading/ Binder Tolerances from EN Table a.1 Conformity specification ± ± ± ± ± Binder ±

28 Example of a Declared Specification AC 32 HDM bin 40/60 Test Sieve mm Conformity specification Binder

29 PD6691: 2010 Guidance on the use of BS EN Bituminous Mixtures Material Specifications

30 PD6692: 2010 Guidance on the use of BS EN Bituminous Mixtures Test Methods fr hot mix asphalt

31 BS : 2010 This is the baseline document for all asphalt works. Applies principally to Parts 1, 4 and 5 of BS EN relating to Asphalt Concrete, Hot Rolled Asphalt (including application of coated chippings to provide texture for skid resistance) and Stone Mastic Asphalt, Applies from the point of collection from the production plant until the materials are in-situ and ready to receive a further superimposed layer or traffic.

32 Attestation of Conformity Initial Type Testing Factory Production Control Evaluation of Conformity CE-marking

33 Attestation of Conformity To obtain CE mark there is a Procedure of Attestation of Conformity For asphalt 1. Initial type testing by the manufacturer. 2. Factory production control - by the manufacturer. 3. Initial inspection plus a continuous surveillance of the FPC by a notified body (a neutral third party).

34 CE-marking In CPD the use of CE marking is described A product for construction works and placed on the European internal market must have a CE marking. CE marking on a product indicates that the product satisfies all the provisions of the CPD, including the conformity assessment procedures. Asphalt mix produced according to the harmonised European standards, must carry the so called CE marking

35 BS EN European Specification for Aggregates for Concrete

36 PD : 2009 Guidance on the use of BS EN Aggregates for Concrete

37 BS EN European Specification for Aggregates for Bituminous Mixtures

38 PD : 2009 Guidance on the use of BS EN Aggregates for Bituminous Mixtures and Surface treatments for roads, Airfields and other trafficked areas

39 BS EN European Specification for Aggregates for Mortar

40 PD : 2009 Guidance on the use of BS EN Aggregates for Mortar

41 AGGREGATE SIZE (d/d) lower sized sieve ( d ) higher size sieve ( D ) old 20mm single size stone will now be classed as 10/20

42 AGGREGATE SIZE (d/d) BS 63 New EN 40mm 20/40 28mm 20/32 20mm 10/20 14mm 6.3/14 10mm 4/10 6mm 2/6.3 3mm 1/4 CRF 0/4 all-in Fine Sand 0/2FP

43 GRADING CATEGORY (G c ) Percentage of material passing d/d 10/20 would have a grading category G c 85/20 Not less than 85% passing D Not more than 20% passing d

44 Aggregate Test - Flakiness (FI 35 ) Flakiness test has changed you now use a bar sieve along with the new sieve sizes. Results are lower then the old method

45 Aggregate Test Los Angeles (LA 30 ) Is new to the UK, it measures the fragmentation / strength Replace the old 10% Fines value The lower the number the harder the stone LA of 30 or less will be within specification.

46 MICRO-DEVAL (M DE ) New to the UK and is similar to the Los Angeles test but measures the resistance of an aggregate to wear.

47 Polished Stone Value (PSV) This has stayed the same as before.