What%makes%EME% binder%sodiﬀerent% - aapaqtmr.org · 02#Whatmakes#EME#binder#diﬀerent–...

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02 What makes EME binder different – Iulian Man & Kanjana Yindee 1

What makes EME binder so different

Kanjana Yindee & Iulian Man SAMI Bitumen Technologies

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European standards for bitumen : main classifica?on

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Requirements for EME binders (Europe)

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Not all hard bitumen fit for purpose!

What is the challenge of EME binder selection?

If the stiffness of bitumen is too high, the stiffness of bituminous mixes increases significantly. The risk of fatigue cracking also increases.

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Performance requirements for EME2

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Source: The modulus and fa?gue values for EME2 in the Colas research database for the period 2003-‐2008 (Colas CST, Europeanroads review 14 , Spring 2009 )

Example: Hard bitumen sources vs Modulus & Fatigue resistance

Modulus at 15 °C, MPa

Fa?g

ue re

sistan

ce at 1

0 °C , µstrain

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Main characteris?cs of SAMI EME binder Main characteris?cs of SAMI EME binder

Property 15/25 UK Trial

(TRL Report TRL636)

SAMI EME 15/25

Aus trial-‐Boral)

Spec EN 13924 15/25

PenetraOon at 25 °C, 100g, 5s, dmm 18 19 15 -‐ 25 SoRening Point, °C 66 70.0 55-‐71 Viscosity at 60 °C, Pa.s -‐ 5876 ≥ 550 Viscosity at 135 °C, Mm2/s 1490 1853 ≥ 600 Viscosity at 135 °C, Pa.s 1.535 1.909 -‐ A^er RTFOT PenetraOon at 25 °C , 100g, 5s, dmm 12 16 Report Retained penetraOon, % original 70 84.2 ≥ 55 Loss on HeaOng, mass% 0.07 0.05 ≤ 0.5 Increase in SoRening Point, °C 6 8 ≤  8 Mix Proper?es Richness Modulus, % 3.65 -‐ ≥ 3.4 % Air Void 1.8 -‐ ≤ 6 Duriez test, RaOo before and aRer water emersion 0.97 -‐ ≥ 0.75 FaOgue Test (10°C, 25Hz, microstrain for 106 cycle) 130 -‐ ≥ 130 Complex modulus (15 °C, 10 Hz), GPa 14.05 -‐ ≥ 14 GPa Ruang test (60°C, 30,000 cycles) 5.8 -‐ ≤ 7.5

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Characteris?cs – Australian EME mix

•  Uses a hard grade bitumen 15 -‐25 PenetraOon •  High SOffness Modulus •  Improved ruang resistance

•  Improved faOgue resistance

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Benchmarking against French designed and prepared EME mix

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C170

C320 C600

M1000/pen 43

SAMI EME binder/pen 19

Blown bitumen/pen 18

Mixing and compaction range are recommended by SP-2 and ASSHTO T312: as 0.17 ± 0.02 Pa.s and 0.28 ± 0.03 Pa.s.

Temperature Guides for SAMI EME binder

AR450

Mixing range

CompacOon range

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Quality control of EME binder for this Trial

Method Property SAMI Tank

SAMI Truck

Boral Tank Target

AS 2341.12 PenetraOon at 25 °C, 100g, 5s, pu 19 19 19 15 -‐ 25

AS 2341.4 SoRening Point, °C 69.8 70.5 70.0 55-‐71

AS 2341.2 Viscosity at 60 °C, Pa.s 5800 5793 5876 ≥ 550

AS 2341.4 Viscosity at 135 °C, Pa.s 1.915 1.897 1.909 ≥ 0.6

SAMI’s Tank SAMI’s Truck Boral’s Tank

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1. Not all hard bitumens are suitable for EME 2. EME technology requires a special low PEN binder manufactured to meet the target performance 3. High stiffness combined with good fatigue resistance to be achieved by bitumen processing 4. Mixing and compaction temperature of EME mixes need to be recommended by supplier

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Thank you

What%makes%EME% binder%sodiﬀerent% - aapaqtmr.org · 02#Whatmakes#EME#binder#diﬀerent–...

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