French Standard for HMA Components-Aggregates and Bitumens

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Bituminous mixes

French standardization :Component specifications

Overview of specifications

Yves BROSSEAUD – LCPC Nantes France -

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content

• Tests and Requirements for aggregates

 – Standardization NF EN

 – Classification NF (link with previous situation)

• Tests and Requirements for reclaim asphalt

• Tests and Requirements for bitumen

 – Pure bitumen (tests and specification NF EN)

 – Hard bitumen (tests and specification NF EN)

 – Polymer modified binder (method)

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Mix design procedure

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Bituminous mixes

French standardizationand recommendations:

 Aggregate requirements

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European standard for aggregates (2004)

NF EN 12620, 13139, 13043, 132+ Articles 7, 8, 9, 10: French classification

standard XP P 18-545

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Content of aggregate standard

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New classification for aggregate according to the European standar 

exemple of designation

Characterization of fraction aggregate:Porphyre (petrography with simplification)

10/20 - GC85/15 – G 20/15

f4 - MBFNT - Fl55 – C 50/30LA25 - PSV NR – AAVNR – MDE25

AN NR –

MVR 2,55 Mg/m3

F b i ti ti

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Grading: size valuesFabrication properties

F b i ti ti

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Grading : general requirementsFabrication properties

Fraction: d/D

Maximum size for asphalt

Fundation

Surface course :

mixes:

or base courses :

20mm – 14mm current

14mm – 10mm current – 6mm improve skidding resistance

Fabrication properties

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Grading : allowed tolerances for coarse aggregates

 Alternative test for grading, by using LCPC videogranulometer 

Particules up to 1 mm

Fabrication properties

Fabrication properties

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Grading : allowed tolerances for the producersFabrication properties

Fabrication properties

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Grading : fines content on coarse aggregates or sandFabrication properties

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Fabrication properties

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Shape NF EN 933-3: categories for flakiness indexFabrication properties

Fabrication properties

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Shape NF EN 933-4: categories for shape index

Test does not used in France

Fabrication properties

Fabrication properties

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 Angularity NF EN 933-5: categories for crushed faces

 Aggregate from crushing rocks (No test): C100/0Test does not used in France

French alternative test : Angularity test for coarse aggregates

Passing time on vibrating plate

Fabrication properties

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Intrinsic properties

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18/86Other alternative test : resistance to impact SZ categories (18, 22, 26, 32, NR)

Fragmentation resistance NF EN 1097-2:

categories for Los Angeles (LA)

Test does not used in France

p p

W i i t NF EN 1097 1Intrinsic properties

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Wearing resistance NF EN 1097-1:

categories for micro Deval (MDE)

p p

P li hi i t NF EN 1097 8Intrinsic properties

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Polishing resistance NF EN 1097-8:

categories for Polishing Stone Value (PSV)

Test only used for wearing courseRequirement up to 50

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Intrinsic properties

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Water absorption effect of freeze-thaw resistance

No checking for freeze thaw resistance on aggregate used in bituminous mixes

No significant porosity of aggregates used in France (if not LA before and after freeze cycle)

Other tests for artif icial aggregate A tifi i lA tifi i l tt

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Other tests for artif icial aggregate

Example for steel slag aggregates Artificial Artificial aggregatesaggregates

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Requirements for added filler:

Voids Rigden NF EN 1097-7

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• Recommendations concerning :

 – Test method and common European categories in France – Non-recommended tests in France

But it is only «for information purposes only and do notexclude other options described in European

standard»

So it is not requirements (obligation), but some

recommendations (advise) to follow

National foreword

National foreword

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Recommended tests and common categories

National foreword

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Recommended tests and common categories

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Quality control CE mark

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Quality control – CE mark

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Quality control CE mark

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Quality control – CE mark

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New classification for aggregate – exemple inside in the market

Characterization of fraction aggregate:Porphyre (petrography with simplification)

10/20 - GC85/15 – G 20/15

f4 - MBFNT - Fl

55– C

50/30LA25 - PSV NR – AAVNR – MDE25

AN NR –

MVR 2,55 Mg/m3

It is a topic for specialist: so it is necessary to classified

aggregate to facilitate the definitions in market

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General requirements or recommendations

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q

For aggregates used in asphalt mixes

Specific guide : used of european asphalt mixes

XP P 18-545 - ARTICLE 7 :CHAUSSEES

BINDER, BASE , FONDATION Courses

XP P 18-545 - ARTICLE 8 :WEARING Courses

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INTRINSIC CHARACTERISTICS

Codes Los

 Angeles

Micro-Deval Polishing

resistance

(wearing)

Codes

LA 20 MDE15 PSV 56  ANC  A (1)

B(1) BNC PSV 50 BNC B(1)

C(1) CNC LA 25 MDE20 CNC C(1)

D(1) CNC LA 30 MDE25

E(1) DNC LA 40 MDE35

(1) maximum compensation up to 5 points is

accepted between LA and MDE Values

 c   l a s s  i  f

  i c a  t  i o  n

NC = no compensate (strictly the N€)

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Guide for mix design : relations between

type of asphalt mix and aggregates specifications

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yp p gg g p

    W   e   a   r    i   n

   g   c   o   u   r   s   e   s

    F   u   n    d   a

    t    i   o   n   c   o   u   r   s   e

   s

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Guide for mix design

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Bituminous mixesFrench standardization

and recommendations:

Bitumen requirements

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General requirements

For bitumen used in asphalt mixes

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For bitumen used in asphalt mixes

Choice between different nature of bitumen

- Pure bitumen : NF EN 12591

- Hard bitumen NF EN 13924

- Polymer Modified Binder NF EN 14023*

* Only a framework with global test method

and some specifications

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Specifications for pure SOFT bitumen : designated by viscosity at 60°C

National Specification used European countries

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Bit d i F f d li ti

National foreword

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3535 àà 43434343 àà 51514646 àà 54545050 àà 58585555 àà 6363R&BR&B °°CC

160160 àà 2202207070 àà 1001005050 àà 70703535 àà 50502020 àà 3030Pen 25Pen 25°°CC

160/220160/22070/10070/10050/7050/7035/5035/5020/3020/30DescriptionDescription

« Hard» « Soft»ConsistancyConsistancy

BitumenBitumen categoriescategories NF EN 12 591:NF EN 12 591: characteristicscharacteristics ofof penetrationpenetration and R&Band R&B

Bitumen used in France for road applications

Road with traffic

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Hard bitumen used in France for road applications NF EN 13924 (EME)

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Specifications for binder, some remarks :• NPD : no performance determined

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• NR : no requirement

• TBR : to be reported

Specifications for hard bitumen defined in European standard

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National foreword

French specifications for hard paving grade

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Example for BMP 45/80-60Polymer modified bitumen

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conventional tests to assess the characterization

of PmB

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Penetrability / Viscosity -> no link with performances

(translate a state of binder)

R&B

->becarefull with the preparation

Fraass -> no good repeatability, no really significant

Traction, Elastic recovery -> favorable for elastomers/plastomers

Percentage of polymer -> composition, not a performance !

Cohesion Vialit -> energy vs temperature (Surface Dressing)

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Bitumes/Polymères (5)

Specific tests to perform the rehological

behaviour for PmB

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Bitumes/Polymères (5)expertise tests

Complex Modulus (DSR) -> assess the performances and the

rheological behaviour on all the range of uses: low temperature

service temperature

high temperature

Simulated distillation -> to find some pollutants, to

characterize the compatibilisants or plastifiants agents Bending Beam Rheometer (BBR) -> to check the critical

freeze temperature

complexmodule : polymer (SBS)

Specific tests to perform the rehological behaviour for PmB

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Before ageing (origin)

0

30

60

90

1E+01 1E+03 1E+05 1E+07 1E+09

G* (Pa)

Bc

Bc-SBS* (3%)

Bc-SBS* (6%)

complexmodule : polymer (SBS)content effect

Quality control for CE mark

System 2+ = Initial Type Testing + Factory Production ControlISO 9001

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PRODUCER

NOTIFIED

BODY

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Bitumen used in France for road applications

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• The choice of penetration grade depend on:

- mechanical strains and stresses- type of climate

- altitude

- type of asphalt mix

Some recommendations are given in specific guides for application of asphalt mixes

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I whish you a very fruitful meeting on performancerequirements for asphalt mixes

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Gracias por su atención