European Asphalt Standards - Presentation

Robert Gossling / Bob Overett September 07 - NEW ASPHALT STANDARDS – 1 JAN 2008

New European Asphalt Standards


What's happening?

From 1 January 2008 specifications for asphalt will change

Out go… BS4987 and BS594 product standards

And in come… European standards BS EN13108 parts 1 to 8, 21 and 22

PLUS… BS 594987 for transport and installation

With PD 6691, the UK guidance document

The SHW, test methods and other standards ALL change at the same time


What does this mean for contracting/ installers/ customers?

• They order a product to BS EN 13108

• There is no need to be supply plant specific with the order

• They install the product to BS 594987/ SHW/ Defence Estates specs/ other specs

• BS594987 becomes the reference spec for installation together with PD 6691, the UK guidance document


BS EN 13108 family of standards

BS EN 13108 - 1 asphalt concrete

BS EN 13108 - 2 asphalt concrete for very thin layers

BS EN 13108 - 3 soft asphalt (Nordic countries)

BS EN 13108 - 4 hot rolled asphalt

BS EN 13108 - 5 stone mastic asphalt

BS EN 13108 - 6 mastic asphalt

BS EN 13108 - 7 porous asphalt

BS EN 13108 - 8 reclaimed asphalt

BS EN 13108 - 20 type testing

BS EN 13108 - 21 factory production control

(Products in bold text are available from Lafarge)


BS EN 13108 key differences

Covers only the product in the truck, not the installation

Now a target composition rather than a recipe approach

• Compliance tolerances are given in FPC (EN 13108 : 21)

• Binder content is adjusted for aggregate density

• No corrections for binder or filler content in base/ binder courses – it is target +/- the tolerance


BS EN 13108 key differences

More rigorous product conformity

• Q-Value replaced with Operating Compliance Level (OCL)

• Introduces a mean deviation from target (Product Consistency)

• Still tested and reported by technical

Attestation of Conformity is required by the Producer

• External accreditation still required (ISO 9001:2000) for Factory Production Control (FPC) and Sector Scheme 14.

• Products require Initial Type Testing before they can go on sale


Product approval process

Current 2007

1 Propose composition

2 Evaluate/ approve

3 Site trial(s) – 929 etc

4 Testing

5 Evaluation

6 Approval

7 Commence supply

New 2008 onwards

1 Attestation of Conformity

2 Initial Type Testing

3 Sector Scheme 14 + FPC

4 CE marking by notified body (NoBos) if required in future – not a requirement now

5 Commence supply

Type Test is Mix specific - valid for five years

Transferable from plant to plant and contract to contract


Description examples

SMA 10 surf 40/60 PSV650/10MM SMA SC 50 PSV 65

HRA 15/10F surf 40/60 rec 15% 0/10MM HRASC 50PEN SF

HRA 35/14F surf PMB perf 35% 0/14MM HP HRASC POLYMER

HRA 35/14 surf 40/60 des 35% 0/14MM HRASC 50PEN DESIGN

HRA 60/32 base 40/60 60% 0/32MM HRABC/RB 50PEN (28MM)

AC 6 med surf 100/150 0/6MM DSC 125PEN BS4987

AC 10 close surf 100/150 PSV60 0/10MM CGSC 125PEN (60PSV) BS4987

AC 14 EME 2 base 10/20 0/14MM EME class 2 10/20PEN

AC 20 dense bin 100/150 0/20MM DBC 125PEN SF BS4987

2008 onwards2007


PD 6691:2007

Each product will have a nominated target composition to which conformance tolerances will be applied

Binder content - its expression and the method of calculation based on the relative density of aggregate – back calculation formula

Annexes - give detailed information and guidance in the form of examples on product specifications

• Annex A1 – Asphaltic Concrete and replaces BS4987

• Annex A2 – Hot Rolled Asphalt and replaces BS594

• Annex A5 – Stone Mastic Asphalt


PD 6691:2007

Use of Reclaimed asphalt

• Classification system used in EN 13108-8 for foreign matter and binder properties

• Recommended maximum of 10% in S/C and 50% in bases and binder courses

• More than 10% in S/C & more than 20% in bases and binder courses- recovered binder from the mixture - penetration testing


Product description mandatory text

Binder Grade

Course type

Size ‘D’

Asphalt type

160/220100/150100/15070/10030/4510/20

BASEBINSURF

3220141062

SMAHRAAC


Additional text for UK descriptions

PSV

Miscellaneous

DES

Designed mixtures

EME2HMBHDM

Mix Type

MED/OPENCLOSEDENSE

Grading type


BS 594987

UK only… therefore it’s a British standard

Combination of BS 594 : Part 2 and BS 4987 : Part 2 both of which are withdrawn

Realignment with SHW 900 series

Includes ‘protocols’ for type testing

Includes transport, laying, compaction


BS 594987 Transport and laying

Informative Annexes:

• Annex A

Delivery and rolling temperatures

• Annex B

Rates of spread including HRA, SMA and EME2



Informative Type Testing protocols:

• Annex C

DBM/HDM/HMB design voids (SHW 929)

• Annex D

DBM/HDM/HMB resistance to permanent deformation (SHW 952)

• Annex E

EME2 design and properties (TRL 636)



• Annex F

Performance HRA properties (SHW 943)

• Annex G

SMA binder course properties (SHW 937)

• Annex H

HRA Surface course design (BS 598 Pt 107)

• Annex I

Calibration and operation of indirect density gauge



BS 594987 is intended as the BASELINE document for all applications including:

- roads

- car parks

- footways & cycleways

- play areas etc………

Scheme 16 for Asphalt Laying

- BS 594987 becomes the main Normative reference

Documents

European Asphalt Standards - Presentation